AG
A. Gangopadhyay
astro-ph.HEastro-ph.SRastro-ph.GAastro-ph.CO
On Valency
published · living versionsW_ahvq3aca·v1 · currentpublished
Observations of the luminous red nova AT 2021biy in the nearby galaxy NGC 4631
with Y. -Z. Cai, A. Pastorello, M. Fraser, X. -F. Wang +71
1 version
Preprints & journals
73 papers in the corpus · 2017–2026SN 2023iop: An Extreme 1987A-like Supernova and the Death of Very Massive Stars2610.27312v1 · Steve Schulze, Avinash Singh, Nikhil Sarin et al.2026 · 0 citationsarXiv
Tomography analysis of the intermediate-luminosity Type Iax SN 2024pxl2609.28712v1 · Barnab'as Barna, Mridweeka Singh, Lindsey A. Kwok et al.2026 · 0 citationsarXiv
Early NIR echo and the time variable mass loss history of Type IIn SN 2024kgi2609.25233v1 · Naveen Dukiya, Kuntal Misra, Andrea Pastorello et al.2026 · 0 citationsarXiv
SN 2024afyu interpreted as a Pair Instability Supernova2609.07931v1 · P. J. Pessi, S. Barmentloo, Ł. Wyrzykowski et al.2026 · 0 citationsarXiv
SN 2023gfo: A Peculiar Type IIP Supernova with High Luminosity and Normal Plateau Duration2608.16006v1 · Riko Namba, Masayuki Yamanaka, Keiichi Maeda et al.2026 · 0 citationsarXiv
Wild behaviour near the finish line: the Type Ibn SN 2020able and its stratified environment2608.07661v1 · L. Tartaglia, E. Cappellaro, G. Valerin et al.2026 · 0 citationsarXiv
Photometric and Spectroscopic Studies of Type Ic Supernovae SN 2020akf and SN 2021mxx2607.12525v1 · Mulchand Kurre, K. R. Sahu, Shrutika Tiwari et al.2026 · 0 citationsarXiv
Bridging the gap between SLSNe and SE-SNe. Multi-wavelength analysis of the SLSN-Ib SN 2024jlc2607.01053v2 · A. Simongini, F. Acero, M. Imbrogno et al.2026 · 1 citationA&A, Volume 713, A269, September 2026
NLTE Spectral Modelling of the Nearby Stripped-Envelope Supernova 2024ehs2606.30796v1 · Wilmer Sand Hellman, Se'an J. Brennan, Stan Bartmentloo et al.2026 · 0 citationsarXiv
SN 2024dy: Dust formation in a long-lived Type IIn supernova and constraints on the dust mass2606.18585v1 · Sota Goto, Masayuki Yamanaka, Koji S. Kawabata et al.2026 · 0 citationsarXiv
SN~2018erx: A fast-evolving, dust-reddened Type Icn supernova with broad C II emission lines2605.24811v1 · Kaustav K. Das, Anjasha Gangopadhyay, Mansi M. Kasliwal et al.2026 · 0 citationsarXiv
A Natural Telescope: Discovery of the Strongly Lensed Type II SN 2025mkn at 2604.07983v1 · Cameron Lemon, Ariel Goobar, Joel Johansson et al.2026 · 0 citationsarXiv
SN 2024iss: A Multi-Wavelength Exposé of a Type IIb Supernova with an Early-Time Ultraviolet Spectrum and Shock Breakout Constraints2603.20375v2 · Rujula Yete, Wynn Jacobson-Galan, Ferdinand Ferdinand et al.2026 · 0 citationsarXiv
Nebular Phase Evolution of SN 2023ixf (I): From Circumstellar Infrared Echo to the onset of in-situ Dust Formation in a Type II Supernova2603.14137v1 · Avinash Singh, S. Goto, A. Sarangi et al.2026 · 0 citationsarXiv
A Study of Two Type IIb Supernovae: SNe 2008aq and 2019gaf2601.07450v1 · Mridweeka Singh, Devendra K. Sahu, Raya Dastidar et al.2026 · 0 citationsarXiv
AT2024wpp: An Extremely Luminous Fast Ultraviolet Transient Powered by Accretion onto a Black Hole2601.03337v2 · Daniel A. Perley, Anna Y. Q. Ho, Zoe McGrath et al.2026 · 5 citationsMon Not R Astron Soc (2026)
Hydrogen-Rich to Stripped-Envelope:Observational Continuity and Biases in CCSNe2512.04010v1 · Anjasha Gangopadhyay, Priscila J. Pessi2025 · 2 citationsarXiv
Characterization of type Ibn SNe2511.12362v1 · D. Farias, C. Gall, V. A. Villar et al.2025 · 4 citationsA&A 708, A270 (2026)
Discovery of SN 2025wny: a Strongly Gravitationally Lensed Superluminous Supernova at z = 2.012510.23533v1 · Joel Johansson, Daniel A. Perley, Ariel Goobar et al.2025 · 7 citationsarXiv
SN 2021tsz: A luminous, short photospheric phase Type II supernova in a low-metallicity host2510.05426v1 · R. Dastidar, G. Pignata, N. Dukiya et al.2025 · 0 citationsA&A 703, A224 (2025)
SN 2021aaev: a Hydrogen-Rich Superluminous Supernova with Early Flash and Long-Lived Circumstellar Interaction in an Unusual Host Environment2508.11559v1 · Yang Hu, Ragnhild Lunnan, Priscila J. Pessi et al.2025 · 1 citationarXiv
SN 2023uqf: An Interacting Supernova Coincident with a High-Energy Neutrino2508.08355v1 · Robert Stein, Anna Y. Q. Ho, Anjasha Gangopadhyay et al.2025 · 0 citationsarXiv
Extremely stripped supernova reveals a silicon and sulfur formation site.40836132 · Schulze, Steve, Gal-Yam, Avishay, Dessart, Luc et al.2025 · 17 citationsNature. 2025;644(8077):634-639
A thermonuclear supernova interacting with hydrogen- and helium-deficient circumstellar material. SN 2020aeuh as a SN Ia-CSM-C/O?2507.08532v2 · K. Tsalapatas, J. Sollerman, R. Chiba et al.2025 · 5 citationsA&A 704, A135 (2025)
Low-Luminosity Type IIP Supernovae from the Zwicky Transient Facility Census of the Local Universe. II: Lightcurve Analysis2506.20068v2 · Kaustav K. Das, Mansi M. Kasliwal, Jesper Sollerman et al.2025 · 5 citationsarXiv
SN 2023xgo: Helium-rich Type Icn or Carbon-Flash Type Ibn supernova?2506.10700v2 · Anjasha Gangopadhyay, Jesper Sollerman, Konstantinos Tsalapatas et al.2025 · 6 citationsarXiv
Surrogate models for lightcurves and photosphere properties of Type II supernovae2506.02107v2 · Nikhil Sarin, Takashi J. Moriya, Avinash Singh et al.2025 · 4 citationsMon Not R Astron Soc (2025) 2653-2663
The ambiguous AT2022rze: Changing-look AGN mimicking a supernova in a merging galaxy system2505.23731v2 · P. J. Pessi, R. Lunnan, J. Sollerman et al.2025 · 4 citationsarXiv
Photometry and Spectroscopy of SN 2024pxl: A Luminosity Link Among Type Iax Supernovae2505.02943v2 · Mridweeka Singh, Lindsey A. Kwok, Saurabh W. Jha et al.2025 · 1 citationarXiv
JWST and Ground-based Observations of the Type Iax Supernovae SN 2024pxl and SN 2024vjm: Evidence for Weak Deflagration Explosions2505.02944v2 · Lindsey A. Kwok, Mridweeka Singh, Saurabh W. Jha et al.2025 · 14 citationsThe Astrophysical Journal Letters, Volume 989, Issue 2, id.L33, 24 pp., August 2025
SN 2023vbg: A Type IIn Supernova Resembling SN 2009ip, with a Long-Duration Precursor and Early-Time Bump2504.15988v3 · Sota Goto, Masayuki Yamanaka, Takahiro Nagayama et al.2025 · 5 citationsarXiv
Precursor Activity Preceding Interacting Supernovae I: Bridging the Gap with SN 2022mop2503.08768v2 · S. J. Brennan, S. Barmentloo, S. Schulze et al.2025 · 0 citationsarXiv
Low-Luminosity Type IIP Supernovae from the Zwicky Transient Facility Census of the Local Universe. I: Luminosity Function, Volumetric Rate2502.19493v2 · Kaustav K. Das, Mansi M. Kasliwal, Christoffer Fremling et al.2025 · 11 citationsarXiv
The BTSbot-nearby discovery of SN 2024jlf: rapid, autonomous follow-up probes interaction in an 18.5 Mpc Type IIP supernova2501.18686v2 · Nabeel Rehemtulla, W. V. Jacobson-Gal'an, Avinash Singh et al.2025 · 10 citationsarXiv
SN 2018is: a low-luminosity Type IIP supernova with narrow hydrogen emission lines at early phases2501.01530v1 · R. Dastidar, K. Misra, S. Valenti et al.2025 · 15 citationsA&A 694, A260 (2025)
AT 2021hdr: A candidate tidal disruption of a gas cloud by a binary super massive black hole system2411.08949v1 · L. Hern'andez-Garc'ia, A. M. Munoz-Arancibia, P. Lira et al.2024 · 1 citationarXiv
Looking into the world of interacting supernovae2411.04107v1 · Anjasha Gangopadhyay2024 · 0 citationsarXiv
Eruptive mass loss less than a year before the explosion of superluminous supernovae: I. The cases of SN 2020xga and SN 2022xgc2409.17296v2 · A. Gkini, C. Fransson, R. Lunnan et al.2024 · 5 citationsA&A 694, A292 (2025)
SN 2021foa: the bridge between SN IIn and Ibn2409.02666v3 · Anjasha Gangopadhyay, Naveen Dukiya, Takashi J Moriya et al.2024 · 8 citationsarXiv
Sample of hydrogen-rich superluminous supernovae from the Zwicky Transient Facility2408.15086v2 · P.J. Pessi, R. Lunnan, J. Sollerman et al.2024 · 15 citationsA&A 695, A142 (2025)
Optical and Radio Analysis of Systematically Classified Broad-lined Type Ic Supernovae from the Zwicky Transient Facility2408.14586v3 · Gokul P. Srinivasaragavan, Sheng Yang, Shreya Anand et al.2024 · 19 citationsarXiv
Massive stars exploding in a He-rich circumstellar medium X. Flash spectral features in the Type Ibn SN 2019cj and observations of SN 2018jmt2408.12393v1 · Z.-Y. Wang, A. Pastorello, K. Maeda et al.2024 · 6 citationsA&A 691, A156 (2024)
CSS161010: a luminous, fast blue optical transient with broad blueshifted hydrogen lines2408.04698v2 · Claudia P. Guti'errez, Seppo Mattila, Peter Lundqvist et al.2024 · 0 citationsarXiv
A study in scarlet -- I. Photometric properties of a sample of Intermediate Luminosity Red Transients2407.21671v1 · G. Valerin, A. Pastorello, A. Reguitti et al.2024 · 8 citationsA&A 695, A42 (2025)
A study in scarlet -- II. Spectroscopic properties of a sample of Intermediate Luminosity Red Transients2407.21733v1 · G. Valerin, A. Pastorello, E. Mason et al.2024 · 6 citationsA&A 695, A43 (2025)
Unravelling the asphericities in the explosion and multi-faceted circumstellar matter of SN 2023ixf2405.20989v2 · Avinash Singh, R.S. Teja, T.J. Moriya et al.2024 · 53 citationsarXiv
Extended Shock Breakout and Early Circumstellar Interaction in SN 2024ggi2405.18490v2 · Manisha Shrestha, K. Azalee Bostroem, David J. Sand et al.2024 · 46 citationsarXiv
Probing the Circumstellar Environment of highly luminous type IIn SN ASASSN-14il2404.04235v2 · Naveen Dukiya, Anjasha Gangopadhyay, Kuntal Misra et al.2024 · 9 citationsApJ, Volume 976, 2024, page 86
SN 2019nyk: A rapidly declining Type II supernova with early interaction signatures2403.00927v1 · Raya Dastidar, Giuliano Pignata, Naveen Dukiya et al.2024 · 8 citationsarXiv
SN 2020udy: A new piece of the homogeneous bright group in the diverse Iax subclass2401.07107v1 · Mridweeka Singh, Devendra K. Sahu, Barnabas Barna et al.2024 · 9 citationsarXiv
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