HK
Harsh Kumar
astro-ph.HEastro-ph.SRastro-ph.GAastro-ph.IMastro-ph.EPgr-qccs.AIcs.LGphysics.data-an
On Valency
published · living versionsW_6umdtcx4·v1 · currentpublished
Real-time Discovery of AT2020xnd: A Fast, Luminous Ultraviolet Transient with Minimal Radioactive Ejecta
with Daniel A. Perley, Anna Y. Q. Ho, Yuhan Yao, Christoffer Fremling +27
1 version
Preprints & journals
48 papers in the corpus · 2018–2026AT 2022csn: A Photometrically Peculiar Optical/UV Tidal Disruption Event in a Type II AGN2608.02725v1 · Yael Dgany, Iair Arcavi, Grisha Zeltyn et al.2026 · 0 citationsarXiv
The pair-instability origin of supernova 2023vbw2605.16487v1 · Daichi Hiramatsu, Edo Berger, Daichi Tsuna et al.2026 · 0 citationsarXiv
Lense-Thirring precessing magnetar engine drives a superluminous supernova.41814026 · Farah, Joseph R, Prust, Logan J, Howell, D Andrew et al.2026 · 7 citationsNature. 2026;651(8105):321-325
Multiwavelength Analysis of Six Luminous Fast Blue Optical Transients2601.18926v2 · Cassie Sevilla, Anna Y. Q. Ho, Nayana A.J. et al.2026 · 1 citationarXiv
SN 2024afav: A Superluminous Supernova with Multiple Light Curve Bumps and Spectroscopic Signatures of Circumstellar Interaction2512.06067v1 · Harsh Kumar, Peter K. Blanchard, Edo Berger et al.2025 · 4 citationsarXiv
Hydrogen-Poor Superluminous Supernovae in the Nebular Phase: Spectral Diversity Due to Ejecta Ionization as a Probe of the Power Source2511.10747v1 · Peter K. Blanchard, Edo Berger, Sebastian Gomez et al.2025 · 2 citationsarXiv
Optimizing Kilonova Searches: A Case Study of the Type IIb SN 2025ulz in the Localization Volume of the Low-Significance Gravitational Wave Event S250818k2510.17104v2 · Noah Franz, Bhagya Subrayan, Charles D. Kilpatrick et al.2025 · 10 citationsarXiv
When IIb Ceases To Be: Bridging the Gap Between IIb and Short-plateau Supernovae2509.12470v1 · Joseph R. Farah, D. Andrew Howell, Daichi Hiramatsu et al.2025 · 2 citationsarXiv
Radio Emission from the Infrared Tidal Disruption Event WTP14adeqka: The First Directly Resolved Delayed Outflow from a TDE2508.16756v1 · Walter W. Golay, Edo Berger, Yvette Cendes et al.2025 · 0 citationsarXiv
James Webb Space Telescope Observations of the Nearby and Precisely-Localized FRB 20250316A: A Potential Near-IR Counterpart and Implications for the Progenitors of Fast Radio Bursts2506.19007v1 · Peter K. Blanchard, Edo Berger, Shion E. Andrew et al.2025 · 4 citationsarXiv
The Jetted Tidal Disruption Event AT2022cmc: Investigating Connections to the Optical Tidal Disruption Event Population and Spectral Subclasses Through Late-Time Follow-up2506.08250v1 · Erica Hammerstein, S. Bradley Cenko, Igor Andreoni et al.2025 · 1 citationarXiv
A Detection of Helium in the Bright Superluminous Supernova SN 2024rmj2506.06417v1 · Harsh Kumar, Edo Berger, Peter K. Blanchard et al.2025 · 4 citationsarXiv
Multi-Wavelength Analysis of AT 2023sva: a Luminous Orphan Afterglow With Evidence for a Structured Jet2501.03337v1 · Gokul P. Srinivasaragavan, Daniel A. Perley, Anna Y. Q. Ho et al.2025 · 10 citationsarXiv
A Near-IR Search for Helium in the Superluminous Supernova SN 2024ahr2501.01485v1 · Harsh Kumar, Edo Berger, Peter K. Blanchard et al.2025 · 0 citationsarXiv
The Nature of Optical Afterglows Without Gamma-ray Bursts: Identification of AT2023lcr and Multiwavelength Modeling2411.07973v2 · Maggie L. Li, Anna Y. Q. Ho, Geoffrey Ryan et al.2024 · 8 citationsarXiv
Type IIn Supernovae. I. Uniform Light-curve Characterization and a Bimodality in the Radiated Energy Distribution2411.07287v2 · Daichi Hiramatsu, Edo Berger, Sebastian Gomez et al.2024 · 5 citationsThe Astrophysical Journal, 1005:82 (30pp), 2026 July 1
The Palomar twilight survey of 'Ayló'chaxnim, Atiras, and comets2409.15263v1 · B. T. Bolin, F. J. Masci, M. W. Coughlin et al.2024 · 6 citationsarXiv
AT2023vto: An Exceptionally Luminous Helium Tidal Disruption Event from a Massive Star2408.01482v1 · Harsh Kumar, Edo Berger, Daichi Hiramatsu et al.2024 · 4 citationsarXiv
The Type I Superluminous Supernova Catalog I: Light Curve Properties, Models, and Catalog Description2407.07946v1 · Sebastian Gomez, Matt Nicholl, Edo Berger et al.2024 · 1 citationarXiv
Searching for gravitational wave optical counterparts with the Zwicky Transient Facility: summary of O4a2405.12403v1 · Tom'as Ahumada, Shreya Anand, Michael W. Coughlin et al.2024 · 22 citationsarXiv
Constraints on Triton atmospheric evolution from occultations: 1989-20222402.02476v1 · B. Sicardy, A. Tej, A. R. Gomes-Junior et al.2024 · 0 citationsarXiv
The Luminous, Slow-Rising Orphan Afterglow AT2019pim as a Candidate Moderately Relativistic Outflow2401.16470v2 · Daniel A. Perley, Anna Y. Q. Ho, Michael Fausnaugh et al.2024 · 22 citationsarXiv
Minutes-duration optical flares with supernova luminosities.37968403 · Ho, Anna Y Q, Perley, Daniel A, Chen, Ping et al.2023 · 29 citationsNature. 2023;623(7989):927-931
Characterizing the Ordinary Broad-lined Type Ic SN 2023pel from the Energetic GRB 230812B2310.14397v2 · Gokul P. Srinivasaragavan, Vishwajeet Swain, Brendan M. O'Connor et al.2023 · 0 citationsarXiv
Multi-wavelength observations of multiple eruptions of the recurrent nova M31N 2008-12a2310.06586v2 · Judhajeet Basu, M. Pavana, G.C. Anupama et al.2023 · 8 citationsarXiv
Astreaks: Astrometry of NEOs with trailed background stars2306.16519v1 · Kritti Sharma, Harsh Kumar, Harsh Choudhary et al.2023 · 7 citationsarXiv
Far-Ultraviolet to Near-Infrared Observations of SN 2023ixf: A high energy explosion engulfed in complex circumstellar material2306.10284v2 · Rishabh Singh Teja, Avinash Singh, Judhajeet Basu et al.2023 · 66 citationsThe Astrophysical Journal Letters, 954:L12 (10pp), 2023 September 1
A Sensitive Search for Supernova Emission Associated with the Extremely Energetic and Nearby GRB 221009A2303.12849v3 · Gokul P. Srinivasaragavan, Brendan O' Connor, S. Bradley Cenko et al.2023 · 34 citationsarXiv
Collapsars as Sites of r-process Nucleosynthesis: Systematic Near-Infrared Follow-up of Type Ic-BL Supernovae2302.09226v2 · Shreya Anand, Jennifer Barnes, Sheng Yang et al.2023 · 29 citationsApJ, 962, 68 (2024)
Publisher Correction: A very luminous jet from the disruption of a star by a massive black hole.36624296 · Andreoni, Igor, Coughlin, Michael W, Perley, Daniel A et al.2023 · 3 citationsNature. 2023;613(7945):E6
A very luminous jet from the disruption of a star by a massive black hole.36450988 · Andreoni, Igor, Coughlin, Michael W, Perley, Daniel A et al.2023 · 132 citationsNature. 2022;612(7940):430-434
GROWTH on S190426c II: GROWTH-India Telescope search for an optical counterpart with a custom image reduction and candidate vetting pipeline2209.02077v1 · Harsh Kumar, Varun Bhalerao, G.C. Anupama et al.2022 · 12 citationsarXiv
Utilizing a global network of telescopes to update the ephemeris for the highly eccentric planet HD 80606 b and to ensure the efficient scheduling of JWST2208.14520v1 · Kyle A. Pearson, Chas Beichman, Benjamin J. Fulton et al.2022 · 15 citationsarXiv
India's first robotic eye for time domain astrophysics: the GROWTH-India telescope2206.13535v1 · Harsh Kumar, Varun Bhalerao, G.C. Anupama et al.2022 · 33 citationsarXiv
The long-active afterglow of GRB 210204A: Detection of the most delayed flares in a Gamma-Ray Burst2204.07587v1 · Harsh Kumar, Rahul Gupta, Divita Saraogi et al.2022 · 16 citationsarXiv
Demonstrating the Concept of Parallax with James Webb Space Telescope2203.07866v1 · Chow-Choong Ngeow, Harsh Kumar, Varun Bhalerao2022 · 0 citationsarXiv
Cosmological Fast Optical Transients with the Zwicky Transient Facility: A Search for Dirty Fireballs2201.12366v2 · Anna Y. Q. Ho, Daniel A. Perley, Yuhan Yao et al.2022 · 42 citationsarXiv
Probing into emission mechanisms of GRB 190530A using time-resolved spectra and polarization studies: Synchrotron Origin?2201.01167v1 · Rahul Gupta, S. Gupta, T. Chattopadhyay et al.2022 · 20 citationsarXiv
SN 2020sck: deflagration in a carbon-oxygen white dwarf2111.01226v1 · Anirban Dutta, D.K. Sahu, G.C. Anupama et al.2021 · 20 citationsarXiv
Discovery and confirmation of the shortest gamma ray burst from a collapsar2105.05067v2 · Tomas Ahumada, Leo P. Singer, Shreya Anand et al.2021 · 147 citationsarXiv
Fast-transient Searches in Real Time with ZTFReST: Identification of Three Optically-discovered Gamma-ray Burst Afterglows and New Constraints on the Kilonova Rate2104.06352v1 · Igor Andreoni, Michael W. Coughlin, Erik C. Kool et al.2021 · 88 citationsarXiv
Real-time Discovery of AT2020xnd: A Fast, Luminous Ultraviolet Transient with Minimal Radioactive Ejecta2103.01968v3 · Daniel A. Perley (LJMU), Anna Y. Q. Ho, Yuhan Yao et al.2021 · 85 citationsarXivon Valency
Optical follow-up of the neutron star-black hole mergers S200105ae and S200115j2009.07210v1 · Shreya Anand, Michael W. Coughlin, Mansi M. Kasliwal et al.2020 · 110 citationsarXiv
Low frequency view of GRB 190114C reveals time varying shock micro-physics1911.09719v2 · K. Misra, L. Resmi, D. A. Kann et al.2019 · 32 citationsarXiv
GROWTH on S190814bv: Deep Synoptic Limits on the Optical/Near-Infrared Counterpart to a Neutron Star-Black Hole Merger1910.13409v2 · Igor Andreoni, Daniel A. Goldstein, Mansi M. Kasliwal et al.2019 · 102 citationsarXiv
SN 2018hna: 1987A-like supernova with a signature of shock breakout1908.07807v1 · Avinash Singh, D.K. Sahu, G.C. Anupama et al.2019 · 20 citationsarXiv
GROWTH on S190425z: Searching thousands of square degrees to identify an optical or infrared counterpart to a binary neutron star merger with the Zwicky Transient Facility and Palomar Gattini IR1907.12645v3 · Michael W. Coughlin, Tom'as Ahumada, Shreya Anand et al.2019 · 133 citationsarXiv
The Fast, Luminous Ultraviolet Transient AT2018cow: Extreme Supernova, or Disruption of a Star by an Intermediate-Mass Black Hole?1808.00969v4 · Daniel A. Perley, Paolo A. Mazzali, Lin Yan et al.2018 · 230 citationsarXiv
Career total: at least 140 works. 48 are in this corpus.
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