Griffin Hosseinzadeh griffin-h.github.io
Education
  • University of California, Santa Barbara Sep. 2013–Jun. 2018
  • Ph.D. Physics, Astrophysics Emphasis
  • M.A. Physics, Astrophysics Emphasis
  • Certificate in College and University Teaching
  • Thesis: Probing Late-Stage Stellar Evolution Through Robotic Follow-Up of Nearby Supernovae
  • University of California, Berkeley Aug. 2008–May 2012
  • B.A. Physics, Music Minor
  • High Distinction in General Scholarship
Research
  • University of California, San Diego Jul. 2024–present
  • Assistant Professor
  • University of Arizona Sep. 2021–Jun. 2024
  • Postdoctoral Researcher
    • DLT40 nearby supernova survey
    • SAGUARO gravitational wave follow-up
    • 90Prime imager upgrade
  • Harvard University Sep. 2018–Aug. 2021
  • Postdoctoral Researcher
    • FLEET superluminous supernova program
    • CfA gravitational wave follow-up
    • Machine-learning-based photometric classification
  • LSSTC Data Science Fellow Sep. 2017–Jun. 2019
  • Two-year training program for handling big data in astronomy
  • Las Cumbres Observatory Jan. 2014–Jun. 2018
  • Graduate Student Researcher
    • Global Supernova Project
    • Las Cumbres gravitational wave follow-up
  • Planet Labs Nov. 2012–Jun. 2013
  • Spacecraft Engineer
    • Telescope collimation and focus
    • Camera, filters, and photometric calibration
  • Frascati National Laboratories (Italy) Aug.–Oct. 2012
  • DOE–INFN Summer Student, MoonLIGHT–ILN Experiment
    • Simulation of lunar laser ranging as a test of general relativity
  • University of California, Berkeley May–Jul. 2012
  • Emilio G. Segrè Intern, Physics 111 Instructional Lab
    • Quantum interference & entanglement experiment
  • Lawrence Berkeley National Laboratory May 2010–Aug. 2011
  • Undergraduate Researcher, Daya Bay Neutrino Experiment
    • Characterizing the liquid scintillator for a neutrino detector
Observing Programs and Grants
  • PASSTA: The Public AEON Spectroscopic Survey for Transient Astronomy Aug. 2025–present
  • PI of a 3-year survey program to obtain complete spectral series of nearby supernovae
    • SOAR Telescope (4 m): 500 hours
  • Ultra-Rapid, High-Cadence UV Photometry of Infant Supernovae Apr. 2025–present
  • PI of a guest investigator program for rapid (Urgency 0), high-cadence supernova follow-up
    • Neil Gehrels Swift Observatory: 180 ks
    • Funding: $39,700 (Proposal 2124205)
  • Ultra-Rapid Spectroscopy of Infant Supernovae Feb. 2025–present
  • PI of a Keck target-of-opportunity program for rapid spectroscopic follow-up of supernovae
    • Keck I or II (10 m): 20 hours
  • Circumstellar Material as a Signature of the SN Ia Progenitor Scenario Feb. 2025–present
  • PI of a Lick high-resolution spectroscopy program for the next very nearby supernova
    • Automated Planet Finder (2.4 m): 40 hours
  • The Multimessenger Treasure TROVE Sep. 2024–present
  • Co-PI of NSF Award 2432036 to develop a tool for vetting counterparts to multimessenger events
    • Funding: $55,053 (UCSD), $1.5M (total across 3 institutions)
  • Electromagnetic Counterparts to Gravitational Wave Events Aug. 2022–Jan. 2025
  • PI of the SAGUARO gravitational-wave follow-up program in LIGO/Virgo/KAGRA O4
    • Large Binocular Telescope (2 × 8.4 m): 8 nights
    • Magellan & MMT (6.5 m): 24 nights
    • Bok, Kuiper, & Vatican Telescopes (1.5–2.3 m): 116 nights
  • Infant Supernovae with the Global Supernova Project Feb. 2022–Jan. 2024
  • PI of the US community's participation in a large, worldwide supernova collaboration
    • SOAR Telescope (4 m): 135 hours
    • Las Cumbres Observatory (1 m, 2 m): 905 hours
  • Probing the Spectroscopic Diversity of SLSNe with FLEET Aug. 2018–Jan. 2022
  • PI of two Gemini programs to obtain rare late-phase spectra of superluminous supernovae
    • Gemini Observatory: 41.5 hours
  • Monitoring for Lensing from a SMBH Binary Candidate Feb. 2020–Jan. 2022
  • PI of a two-year time-domain observing campaign outside my main field of expertise
    • Las Cumbres Observatory (1 m, 2 m): 19 hours
    • F. L. Whipple Observatory (1.2 m): 2 nights
  • CfA Follow-up of Gravitational Wave Events Feb. 2019–Jul. 2020
  • PI of the CfA-based gravitational-wave follow-up program in LIGO/Virgo O3
    • Magellan & MMT (6.5 m): 16.5 nights
    • SOAR Telescope (4 m): up to 30 hours per semester
    • F. L. Whipple Observatory (1.2 m): 9 nights
  • The Mystery of a Supposed Massive Star Exploding in a BCG Oct. 2017–Sep. 2018
  • PI (as a student) of a program to measure star formation at the site of a rare supernova
    • Hubble Space Telescope (2.4 m): 5 orbits
    • Funding: $45,768 (GO-15236)
    Plus many x-ray, ultraviolet, optical, infrared, and radio programs as a coinvestigator.
Service
  • UCSD/SDSU Colloquium & Journal Club Committee Jul. 2025–present
  • Organize visiting colloquium speakers and chair department lunch talk series
  • NSF's NOIRLab Time Allocation Committee Panelist Oct. 2024–present
  • Discussed and ranked observing proposals on the extragalactic panel
  • Peer Reviewer: ApJ, MNRAS, Nature, PhRvD May 2018–present
  • Review manuscripts of journal articles and recommend revision or publication
  • Burbidge Visiting Professor Selection Committee Mar. 2025
  • Discussed and ranked nominations for department's Burbidge Visiting Professorship
  • Las Cumbres Distributed Peer Reviewer Nov. 2023–May 2024
  • Graded and provided comments for transient observing proposals
  • HST Proposal Review Panelist, Cycles 27 & 31 Jun. 2019–Aug. 2023
  • Discussed and ranked observing proposals on the stellar physics panel
  • GSP Pipeline Support Nov. 2021–Oct. 2022
  • Hold monthly Zoom office hours to train collaboration members to do photometry
  • CfA Stars & Planets Seminar Committee Jun. 2019–Aug. 2021
  • Solicited recommendations/self-nominations, selected, and invited seminar speakers
  • HST Proposal External Reviewer, Cycles 28 & 29 Mar. 2020–Jun. 2021
  • Graded regular and mid-cycle observing proposals for the stellar physics panel
  • Santa Barbara Astro Lunch Jan. 2017–Jun. 2018
  • Organized weekly lunch talks by Santa Barbara locals and visitors
Teaching
  • University of California, San Diego Oct. 2025–present
  • Assistant Professor
  • Department of Astronomy & Astrophysics
    • ASTR 154: Data Science in Astronomy
    • ASTR 250: A&A Colloquium Reading Circle
  • Santa Barbara City College Aug. 2014–May 2018
  • Adjunct Faculty
  • Department of Earth and Planetary Science
    • ERTH 102: Observational Astronomy Lab
  • University of California, Santa Barbara Sep. 2013–Jun. 2014
  • Teaching Assistant
  • Department of Physics
    • Astro 1: Basic Astronomy
    • Astro 2: History of the Universe
  • University of California, Berkeley Jun.–Aug. 2010 & 2011
  • Graduate Student Instructor
  • Department of Physics
    • Physics 8A: Introductory Physics (Mechanics)
    • Physics 8B: Introductory Physics (Electricity & Magnetism)
Mentoring
  • Harvard College Research Program, Harvard University Jun. 2020–Apr. 2022
  • “Unveiling the Power Source of Superluminous Supernovae”
  • Led to student's junior thesis and two refereed publications with student as first author
  • REU Program, Smithsonian Astrophysical Observatory Jun.–Aug. 2019
  • “Selecting Superluminous Supernovae from Transient Surveys with Machine Learning”
  • Led to a refereed publication and a Python package with student as second author
  • Worster Fellowship, UC Santa Barbara Jun.–Aug. 2016
  • “Optical Follow-Up of Gravitational Waves”
  • Led to a widely-used Python package with student as first author
  • Pioneers in Engineering, UC Berkeley Feb.–Apr. 2011 & 2012
  • Mentor for a robotics team of Bay Area high school students
Outreach
  • AAS Astronomy Ambassador Jan. 2018–present
  • Attended professional development workshop for effective communication with the public
  • Frequent presenter at various nonspecialist organizations
    • K–12 students: Santa Barbara High School, Thacher School, Youth Astro Net
    • Community colleges: Pima Community College, Santa Barbara City College, STARTastro
    • Membership organizations: Beacon Hill Seminars, Orange County Astronomers
    • General public: Astronomy on Tap Santa Barbara, Space Drafts
  • Astronomy on Tap Boston Apr. 2019–Mar. 2020
  • Free, monthly, public astronomy presentations in the greater Boston area
  • One of four main organizers, negotiated venues, invited speakers, organized logistics
  • Astronomy on Tap Santa Barbara Mar. 2016–Jun. 2018
  • Free, monthly, public astronomy presentations in a bar in downtown Santa Barbara
  • Frequent host and astro news presenter, gave feedback during rehearsals
  • UCSB Physics Circus Sep. 2013–Jun. 2018
  • Interactive physics demonstrations for local elementary and middle schools
  • Won the 2014 Physics Circus Award in honor of outstanding and dedicated service
Press
  • M31-2014-DS1 & NGC6946-BH1 Nov. 2024
    • “A star winked out of sight. Could it be a ‘failed supernova’?” Science News
  • Supernova 2023ixf Jul. 2023
  • Supernova 2017cbv Aug. 2017
    • “Supernova's messy birth casts doubt on reliability of astronomical yardstick,” Nature
    • “This supernova shock wave slammed into its companion star,” Astronomy.com
  • Astronomy on Tap Santa Barbara Mar. 2017
    • “Scientists Share Astronomy With Public In Unusual Way On South Coast,” KCLU (NPR)
Software
  • SAGUARO TOM & Pipeline, Author 1 of 8 DOIdoi:10.5281/zenodo.8436090
  • Target and observation manager and image-subtraction pipeline for gravitational-wave follow-up
  • PyMMT & TOM MMT, Author 3 of 3 DOIdoi:10.5281/zenodo.8322354
  • Python interface to the MMT scheduler and observatory module for the TOM Toolkit
  • Light Curve Fitting, Author 1 of 4 DOIdoi:10.5281/zenodo.2639463
  • Tools to fit analytical models to light curves of astronomical transients
Presentations
Invited Talks
  1. Special Session on SN 2023ixf, 243rd Meeting of the American Astronomical Society Jan. 2024
  2. Observing in the Big Data Era, 243rd Meeting of the American Astronomical Society Jan. 2024
  3. Windows on the Universe, NSF's National Optical/Infrared Astronomy Laboratory Oct. 2023
  4. Arcus Community Science Meeting, Center for Astrophysics | Harvard & Smithsonian May 2023
  5. Interacting Supernovae, Munich Institute for Astro-, Particle, and BioPhysics Feb. 2023
  6. Panel on Large Alert Streams, Gravitational Wave Physics and Astronomy Workshop Dec. 2022
  7. High Energy Astrophysics Seminar, Center for Astrophysics | Harvard & Smithsonian Sep. 2022
  8. Astronomy Seminar, Texas A&M University Nov. 2021
  9. Friday Lunch Astrophysics Seminar, NSF's National Optical/Infrared Astronomy Laboratory Oct. 2021
  10. Lunch Seminar, Carnegie Observatories Jan. 2021
  11. Cosmology Seminar, University of California, Davis Oct. 2020
  12. Astronomy Seminar, Michigan State University Oct. 2020
  13. Supernova Workshop, IAU Symposium 339 Nov. 2017
Contributed Talks
  1. 245th Meeting, American Astronomical Society Jan. 2025
  2. Hot-wiring the Transient Universe VII, University of Toronto May 2024
  3. 243rd Meeting, American Astronomical Society Jan. 2024
  4. Massive Stars Near and Far, IAU Symposium 361 May 2022
  5. SuperVirtual: From Common to Exotic Transients, online Nov. 2021
  6. Petabytes to Science III, Association of Universities for Research in Astronomy Nov. 2019
  7. Hot-wiring the Transient Universe VI, Northwestern University Aug. 2019
  8. High Energy Astrophysics Seminar, Center for Astrophysics | Harvard & Smithsonian Mar. 2019
  9. Observational Astronomy Meeting, Northwestern University Nov. 2018
  10. Cosmology Seminar, University of California, Davis Mar. 2018
  11. 231st Meeting, American Astronomical Society Jan. 2018
  12. Southern Horizons in Time-Domain Astronomy, IAU Symposium 339 Nov. 2017
  13. Generation-GW: Diving into Gravitational Waves, University of the Virgin Islands Jun. 2017
  14. 229th Meeting, American Astronomical Society Jan. 2017
  15. Supernovae Through the Ages, Millenium Institute of Astrophysics Aug. 2016
  16. 227th Meeting, American Astronomical Society Jan. 2016
  17. Hot-wiring the Transient Universe IV, Las Cumbres Observatory May 2015
Publications
*undergraduate under my supervision
First Author
  1. G. Hosseinzadeh, K. Paterson, et al. 2024, “SAGUARO: Time-domain Infrastructure for the Fourth Gravitational-wave Observing Run and Beyond,” ApJ, 964, 35
  2. G. Hosseinzadeh, J. Farah, et al. 2023, “Shock Cooling and Possible Precursor Emission in the Early Light Curve of the Type II SN 2023ixf,” ApJL, 953, L16
  3. G. Hosseinzadeh, D. J. Sand, et al. 2023, “The Early Light Curve of SN 2023bee: Constraining Type Ia Supernova Progenitors the Apian Way,” ApJL, 953, L15
  4. G. Hosseinzadeh, D. J. Sand, et al. 2023, “JWST Imaging of the Cartwheel Galaxy Reveals Dust Associated with SN 2021afdx,” ApJL, 942, L18
  5. G. Hosseinzadeh, C. D. Kilpatrick, et al. 2022, “Weak Mass Loss from the Red Supergiant Progenitor of the Type II SN 2021yja,” ApJ, 935, 31
  6. G. Hosseinzadeh, D. J. Sand, et al. 2022, “Constraining the Progenitor System of the Type Ia Supernova 2021aefx,” ApJL, 933, L45
  7. G. Hosseinzadeh, E. Berger, et al. 2022, “Bumpy Declining Light Curves Are Common in Hydrogen-poor Superluminous Supernovae,” ApJ, 933, 14
  8. G. Hosseinzadeh, F. Dauphin*, et al. 2020, “Photometric Classification of 2315 Pan-STARRS1 Supernovae with Superphot,” ApJ, 905, 93
  9. G. Hosseinzadeh, P. S. Cowperthwaite, et al. 2019, “Follow-up of the Neutron Star Bearing Gravitational-wave Candidate Events S190425z and S190426c with MMT and SOAR,” ApJL, 880, L4
  10. G. Hosseinzadeh, C. McCully, et al. 2019, “Type Ibn Supernovae May not all Come from Massive Stars,” ApJL, 871, L9
  11. G. Hosseinzadeh, S. Valenti, et al. 2018, “Short-lived Circumstellar Interaction in the Low-luminosity Type IIP SN 2016bkv,” ApJ, 861, 63
  12. G. Hosseinzadeh, D. J. Sand, et al. 2017, “Early Blue Excess from the Type Ia Supernova 2017cbv and Implications for Its Progenitor,” ApJL, 845, L11
  13. G. Hosseinzadeh, I. Arcavi, et al. 2017, “Type Ibn Supernovae Show Photometric Homogeneity and Spectral Diversity at Maximum Light,” ApJ, 836, 158
Major Contribution
  1. E. R. Beasor, G. Hosseinzadeh, et al. 2024, “JWST Reveals a Luminous Infrared Source at the Position of the Failed Supernova Candidate N6946-BH1,” ApJ, 964, 171
  2. B. Hsu*, G. Hosseinzadeh, et al. 2022, “Photometrically Classified Superluminous Supernovae from the Pan-STARRS1 Medium Deep Survey: A Case Study for Science with Machine-learning-based Classification,” ApJ, 937, 13
  3. K. Gill, G. Hosseinzadeh, et al. 2022, “Constraining the Time of Gravitational-wave Emission from Core-collapse Supernovae,” ApJ, 931, 159
  4. B. Hsu*, G. Hosseinzadeh, & E. Berger 2021, “Magnetar Models of Superluminous Supernovae from the Dark Energy Survey: Exploring Redshift Evolution,” ApJ, 921, 180
  5. V. A. Villar, G. Hosseinzadeh, et al. 2020, “SuperRAENN: A Semisupervised Supernova Photometric Classification Pipeline Trained on Pan-STARRS1 Medium-Deep Survey Supernovae,” ApJ, 905, 94
  6. S. Gomez, G. Hosseinzadeh, et al. 2019, “A Galaxy-targeted Search for the Optical Counterpart of the Candidate NS-BH Merger S190814bv with Magellan,” ApJL, 884, L55
  7. I. Arcavi, G. Hosseinzadeh, et al. 2017, “Optical emission from a kilonova following a gravitational-wave-detected neutron-star merger,” Natur, 551, 64
  8. I. Arcavi, G. Hosseinzadeh, et al. 2017, “Constraints on the Progenitor of SN 2016gkg from Its Shock-cooling Light Curve,” ApJL, 837, L2
Collaboration
  1. A. Aamer et al. 2025, “The Type I superluminous supernova catalogue – II. Spectroscopic evolution in the photospheric phase, velocity measurements, and constraints on diversity,” MNRAS, 541, 2674
  2. M. Dubey et al. 2025, “Progenitor insights of Type IIP SN 2018pq: a comprehensive photometric and spectroscopic study,” MNRAS, 541, 384
  3. J. Pearson et al. 2025, “Mid-Infrared Dust Evolution and Late-time Circumstellar Medium Interaction in SN 2017eaw,” arXiv:2507.00125
  4. W. V. Jacobson-Galán et al. 2025, “Final Moments III: Explosion Properties and Progenitor Constraints of CSM-Interacting Type II Supernovae,” arXiv:2505.04698
  5. B. M. Subrayan et al. 2025, “Early Shock-Cooling Observations and Progenitor Constraints of Type IIb SN 2024uwq,” arXiv:2505.02908
  6. M. Aghakhanloo et al. 2025, “Spectroscopy of AT 2016blu's recurring supernova impostor outbursts,” MNRAS, 539, 1317
  7. J. R. Farah et al. 2025, “Shock-cooling Constraints via Early-time Observations of the Type IIb SN 2022hnt,” ApJ, 984, 60
  8. R. Baer-Way et al. 2025, “A Multiwavelength Autopsy of the Interacting Type IIn Supernova 2020ywx: Tracing Its Progenitor Mass-loss History for 100 Yr Before Death,” ApJ, 983, 101
  9. M. Pillas et al. 2025, “Limits on the Ejecta Mass During the Search for Kilonovae Associated with Neutron Star-Black Hole Mergers: A case study of S230518h, GW230529, S230627c and the Low-Significance Candidate S240422ed,” arXiv:2503.15422
  10. M. Shrestha et al. 2025, “Spectropolarimetry of SN 2023ixf Reveals Both Circumstellar Material and an Aspherical Helium Core,” ApJL, 982, L32
  11. A. P. Ravi et al. 2025, “Luminous Type II Short-plateau SN 2023ufx: Asymmetric Explosion of a Partially Stripped Massive Progenitor,” ApJ, 982, 12
  12. K. Hoadley et al. 2025, “The Ultraviolet Type Ia Supernova CubeSat (UVIa): Science Motivation & Mission Concept,” arXiv:2502.11957
  13. J. E. Andrews et al. 2025, “Asymmetries and Circumstellar Interaction in the Type II SN 2024bch,” ApJ, 980, 37
  14. R. Dastidar et al. 2025, “SN 2018is: A low-luminosity Type IIP supernova with narrow hydrogen emission lines at early phases,” A&A, 694, A260
  15. N. Yesmin et al. 2025, “Spectral dataset of young type Ib supernovae and their time evolution,” A&A, 693, A307
  16. M. Newsome et al. 2024, “Mapping the Inner 0.1 pc of a Supermassive Black Hole Environment with the Tidal Disruption Event and Extreme Coronal-line Emitter AT 2022upj,” ApJ, 977, 258
  17. Y. Dong et al. 2024, “SN2023fyq: A Type Ibn Supernova with Long-standing Precursor Activity Due to Binary Interaction,” ApJ, 977, 254
  18. S. Gomez et al. 2024, “The Type I superluminous supernova catalogue I: light-curve properties, models, and catalogue description,” MNRAS, 535, 471
  19. N. Dukiya et al. 2024, “Probing the Circumstellar Environment of the Highly Luminous Type IIn Supernova ASASSN-14il,” ApJ, 976, 86
  20. Y. Dong et al. 2024, “Characterizing the Rapid Hydrogen Disappearance in SN 2022crv: Evidence of a Continuum between Type Ib and IIb Supernova Properties,” ApJ, 974, 316
  21. K. M. de Soto et al. 2024, “Superphot+: Real-time Fitting and Classification of Supernova Light Curves,” ApJ, 974, 169
  22. K. A. Bostroem et al. 2024, “Circumstellar Interaction in the Ultraviolet Spectra of SN 2023ixf 14–66 Days After Explosion,” ApJL, 973, L47
  23. M. Shrestha et al. 2024, “Extended Shock Breakout and Early Circumstellar Interaction in SN 2024ggi,” ApJL, 972, L15
  24. B. Hsu et al. 2024, “One Year of SN 2023ixf: Breaking Through the Degenerate Parameter Space in Light-Curve Models with Pulsating Progenitors,” arXiv:2408.07874
  25. N. Meza-Retamal et al. 2024, “Circumstellar Interaction Signatures in the Low-luminosity Type II SN 2021gmj,” ApJ, 971, 141
  26. W. V. Jacobson-Galán et al. 2024, “Final Moments. II. Observational Properties and Physical Modeling of Circumstellar-material-interacting Type II Supernovae,” ApJ, 970, 189
  27. Q. Wang et al. 2024, “A low-mass helium star progenitor model for the Type Ibn SN 2020nxt,” MNRAS, 530, 3906
  28. L. A. Kwok et al. 2024, “Ground-based and JWST Observations of SN 2022pul. II. Evidence from Nebular Spectroscopy for a Violent Merger in a Peculiar Type Ia Supernova,” ApJ, 966, 135
  29. J. E. Andrews et al. 2024, “SN 2022jox: An Extraordinarily Ordinary Type II SN with Flash Spectroscopy,” ApJ, 965, 85
  30. E. Padilla Gonzalez et al. 2024, “SN 2022joj: A Potential Double Detonation with a Thin Helium Shell,” ApJ, 964, 196
  31. M. Shrestha et al. 2024, “Evidence of Weak Circumstellar Medium Interaction in the Type II SN 2023axu,” ApJ, 961, 247
  32. M. R. Siebert et al. 2024, “Ground-based and JWST Observations of SN 2022pul. I. Unusual Signatures of Carbon, Oxygen, and Circumstellar Interaction in a Peculiar Type Ia Supernova,” ApJ, 960, 88
  33. J. Pearson et al. 2024, “Strong Carbon Features and a Red Early Color in the Underluminous Type Ia SN 2022xkq,” ApJ, 960, 29
  34. O. Graur et al. 2023, “No plateau observed in late-time near-infrared observations of the underluminous Type Ia supernova 2021qvv,” MNRAS, 526, 2977
  35. Y. Dong et al. 2023, “A Comprehensive Optical Search for Pre-explosion Outbursts from the Quiescent Progenitor of SN 2023ixf,” ApJ, 957, 28
  36. K. A. Bostroem et al. 2023, “Early Spectroscopy and Dense Circumstellar Medium Interaction in SN 2023ixf,” ApJL, 956, L5
  37. N. Smith et al. 2023, “High-resolution Spectroscopy of SN 2023ixf's First Week: Engulfing the Asymmetric Circumstellar Material,” ApJ, 956, 46
  38. S. D. Van Dyk et al. 2023, “Identifying the SN 2022acko progenitor with JWST,” MNRAS, 524, 2186
  39. D. Hiramatsu et al. 2023, “From Discovery to the First Month of the Type II Supernova 2023ixf: High and Variable Mass Loss in the Final Year before Explosion,” ApJL, 955, L8
  40. K. A. Bostroem et al. 2023, “SN 2022acko: The First Early Far-ultraviolet Spectra of a Type IIP Supernova,” ApJL, 953, L18
  41. L. Makrygianni et al. 2023, “AT 2021loi: A Bowen Fluorescence Flare with a Rebrightening Episode Occurring in a Previously Known AGN,” ApJ, 953, 32
  42. J. E. Jencson et al. 2023, “A Luminous Red Supergiant and Dusty Long-period Variable Progenitor for SN 2023ixf,” ApJL, 952, L30
  43. Y. Camacho-Neves et al. 2023, “Over 500 Days in the Life of the Photosphere of the Type Iax Supernova SN 2014dt,” ApJ, 951, 67
  44. Y. Li et al. 2023, “A comparative analysis of type Ia supernovae 2018xx and 2019gbx,” A&A, 675, A73
  45. S. Gomez et al. 2023, “The First Two Years of FLEET: An Active Search for Superluminous Supernovae,” ApJ, 949, 114
  46. M. Shrestha et al. 2023, “Limit on Supernova Emission in the Brightest Gamma-Ray Burst, GRB 221009A,” ApJL, 946, L25
  47. T. Ben-Ami et al. 2023, “The Type Ibn Supernova 2019kbj: Indications for Diversity in Type Ibn Supernova Progenitors,” ApJ, 946, 30
  48. Y. Q. Ni et al. 2023, “The Origin and Evolution of the Normal Type Ia SN 2018aoz with Infant-phase Reddening and Excess Emission,” ApJ, 946, 7
  49. J. Pearson et al. 2023, “Circumstellar Medium Interaction in SN 2018lab, A Low-luminosity Type IIP Supernova Observed with TESS,” ApJ, 945, 107
  50. B. Ailawadhi et al. 2023, “Photometric and spectroscopic analysis of the Type II SN 2020jfo with a short plateau,” MNRAS, 519, 248
  51. L. A. Kwok et al. 2023, “A JWST Near- and Mid-infrared Nebular Spectrum of the Type Ia Supernova 2021aefx,” ApJL, 944, L3
  52. S. Gomez et al. 2022, “Luminous Supernovae: Unveiling a Population between Superluminous and Normal Core-collapse Supernovae,” ApJ, 941, 107
  53. J. Yang et al. 2022, “Using 1991T/1999aa-like Type Ia Supernovae as Standardizable Candles,” ApJ, 938, 83
  54. C. Pellegrino et al. 2022, “The Diverse Properties of Type Icn Supernovae Point to Multiple Progenitor Channels,” ApJ, 938, 73
  55. J. E. Andrews et al. 2022, “High-Cadence TESS and Ground-based Data of SN 2019esa, the Less Energetic Sibling of SN 2006gy,” ApJ, 938, 19
  56. J. Burke et al. 2022, “Companion Shocking Fits to the 2018 ZTF Sample of SNe Ia Are Consistent with Single-Degenerate Progenitor Systems,” arXiv:2208.11201
  57. Astropy Collaboration 2022, “The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package,” ApJ, 935, 167
  58. Y. Dong et al. 2022, “SN 2016dsg: A Thermonuclear Explosion Involving a Thick Helium Shell,” ApJ, 934, 102
  59. J. Burke et al. 2022, “Early Lightcurves of Type Ia Supernovae are Consistent with Nondegenerate Progenitor Companions,” arXiv:2207.07681
  60. S. J. Brennan et al. 2022, “Progenitor, environment, and modelling of the interacting transient AT 2016jbu (Gaia16cfr),” MNRAS, 513, 5666
  61. S. J. Brennan et al. 2022, “Photometric and spectroscopic evolution of the interacting transient AT 2016jbu(Gaia16cfr),” MNRAS, 513, 5642
  62. A. Fiore et al. 2022, “Close, bright, and boxy: the superluminous SN 2018hti,” MNRAS, 512, 4484
  63. Y. Yin et al. 2022, “Optical Observations and Modeling of the Superluminous Supernova 2018lfe,” ApJ, 931, 32
  64. A. Gangopadhyay et al. 2022, “Evolution of a Peculiar Type Ibn Supernova SN 2019wep,” ApJ, 930, 127
  65. M. L. Graham et al. 2022, “Nebular-phase spectra of Type Ia supernovae from the Las Cumbres Observatory Global Supernova Project,” MNRAS, 511, 3682
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  92. S. Gomez et al. 2020, “FLEET: A Redshift-agnostic Machine Learning Pipeline to Rapidly Identify Hydrogen-poor Superluminous Supernovae,” ApJ, 904, 74
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  94. S. Gomez et al. 2020, “The Tidal Disruption Event AT 2018hyz II: Light-curve modelling of a partially disrupted star,” MNRAS, 497, 1925
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  97. K. A. Bostroem et al. 2020, “Discovery and Rapid Follow-up Observations of the Unusual Type II SN 2018ivc in NGC 1068,” ApJ, 895, 31
  98. T. M. Reynolds et al. 2020, “SN 2016gsd: an unusually luminous and linear Type II supernova with high velocities,” MNRAS, 493, 1761
  99. X. Han et al. 2020, “SN 2017cfd: A Normal Type Ia Supernova Discovered Very Young,” ApJ, 892, 142
  100. L. Tartaglia et al. 2020, “The long-lived Type IIn SN 2015da: Infrared echoes and strong interaction within an extended massive shell,” A&A, 635, A39
  101. A. Gangopadhyay et al. 2020, “Flash Ionization Signatures in the Type Ibn Supernova SN 2019uo,” ApJ, 889, 170
  102. R. Dastidar et al. 2019, “SN 2015an: a normal luminosity type II supernova with low expansion velocity at early phases,” MNRAS, 490, 1605
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  104. J. E. Andrews et al. 2019, “SN 2017gmr: An Energetic Type II-P Supernova with Asymmetries,” ApJ, 885, 43
  105. L. Galbany et al. 2019, “Evidence for a Chandrasekhar-mass explosion in the Ca-strong 1991bg-like type Ia supernova 2016hnk,” A&A, 630, A76
  106. B. Trakhtenbrot et al. 2019, “1ES 1927+654: An AGN Caught Changing Look on a Timescale of Months,” ApJ, 883, 94
  107. S. Gomez et al. 2019, “SN 2016iet: The Pulsational or Pair Instability Explosion of a Low-metallicity Massive CO Core Embedded in a Dense Hydrogen-poor Circumstellar Medium,” ApJ, 881, 87
  108. A. Pastorello et al. 2019, “A luminous stellar outburst during a long-lasting eruptive phase first, and then SN IIn 2018cnf,” A&A, 628, A93
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  110. P. J. Brown et al. 2019, “Red and Reddened: Ultraviolet through Near-infrared Observations of Type Ia Supernova 2017erp,” ApJ, 877, 152
  111. S. J. Prentice et al. 2019, “Investigating the properties of stripped-envelope supernovae; what are the implications for their progenitors?” MNRAS, 485, 1559
  112. T. Szalai et al. 2019, “The Type II-P Supernova 2017eaw: From Explosion to the Nebular Phase,” ApJ, 876, 19
  113. N. Blagorodnova et al. 2019, “The Broad Absorption Line Tidal Disruption Event iPTF15af: Optical and Ultraviolet Evolution,” ApJ, 873, 92
  114. D. Xiang et al. 2019, “Observations of SN 2017ein Reveal Shock Breakout Emission and a Massive Progenitor Star for a Type Ic Supernova,” ApJ, 871, 176
  115. B. Trakhtenbrot et al. 2019, “A new class of flares from accreting supermassive black holes,” NatAs, 3, 242
  116. G. Dimitriadis et al. 2019, “K2 Observations of SN 2018oh Reveal a Two-component Rising Light Curve for a Type Ia Supernova,” ApJL, 870, L1
  117. W. Li et al. 2019, “Photometric and Spectroscopic Properties of Type Ia Supernova 2018oh with Early Excess Emission from the Kepler 2 Observations,” ApJ, 870, 12
  118. F. Taddia et al. 2019, “Analysis of broad-lined Type Ic supernovae from the (intermediate) Palomar Transient Factory,” A&A, 621, A71
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  120. Y.‑Z. Cai et al. 2018, “AT 2017be - a new member of the class of intermediate-luminosity red transients,” MNRAS, 480, 3424
  121. J. P. Anderson et al. 2018, “A nearby super-luminous supernova with a long pre-maximum & "plateau" and strong C II features,” A&A, 620, A67
  122. C. Fremling et al. 2018, “Oxygen and helium in stripped-envelope supernovae,” A&A, 618, A37
  123. C. P. Gutiérrez et al. 2018, “Type II supernovae in low-luminosity host galaxies,” MNRAS, 479, 3232
  124. R. Dastidar et al. 2018, “SN 2015ba: a Type IIP supernova with a long plateau,” MNRAS, 479, 2421
  125. Astropy Collaboration 2018, “The Astropy Project: Building an Open-science Project and Status of the v2.0 Core Package,” AJ, 156, 123
  126. L. Li et al. 2018, “Optical observations of the 2002cx-like supernova 2014ek and characterizations of SNe Iax,” MNRAS, 478, 4575
  127. S. J. Prentice et al. 2018, “SN 2016coi/ASASSN-16fp: an example of residual helium in a typeIc supernova?” MNRAS, 478, 4162
  128. D. J. Sand et al. 2018, “Nebular Spectroscopy of the “Blue Bump” Type Ia Supernova 2017cbv,” ApJ, 863, 24
  129. K. Maguire et al. 2018, “Using late-time optical and near-infrared spectra to constrain Type Ia supernova explosion properties,” MNRAS, 477, 3567
  130. J. P. Anderson et al. 2018, “The lowest-metallicity type II supernova from the highest-mass red supergiant progenitor,” NatAs, 2, 574
  131. F. Huang et al. 2018, “SN 2016X: a type II-P supernova with a signature of shock breakout from explosion of a massive red supergiant,” MNRAS, 475, 3959
  132. C. Inserra et al. 2018, “On the nature of hydrogen-rich superluminous supernovae,” MNRAS, 475, 1046
  133. L. Tartaglia et al. 2018, “The Early Detection and Follow-up of the Highly Obscured Type II Supernova 2016ija/DLT16am,” ApJ, 853, 62
  134. S. Bose et al. 2018, “Gaia17biu/SN 2017egm in NGC 3191: The Closest Hydrogen-poor Superluminous Supernova to Date Is in a “Normal,” Massive, Metal-rich Spiral Galaxy,” ApJ, 853, 57
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White Papers (Endorser)
  1. E. Burns et al. 2025, “The Heavy Element Enrichment History of the Universe from Neutron Star Mergers with Habitable Worlds Observatory,” arXiv:2507.09778
  2. I. Andreoni et al. 2024, “Rubin ToO 2024: Envisioning the Vera C. Rubin Observatory LSST Target of Opportunity program,” arXiv:2411.04793
  3. 2023 Windows on the Universe Workshop White Paper Working Group 2024, “Windows on the Universe: Establishing the Infrastructure for a Collaborative Multi-messenger Ecosystem,” arXiv:2401.02063
  4. R. Foley et al. 2019, “Gravity and Light: Combining Gravitational Wave and Electromagnetic Observations in the 2020s,” BAAS, 51, 295
Plus 310 astronomical telegrams and circulars (152 as first author).
Last updated MJD 60893 (2025-08-05)