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arxiv: 2302.06686 · v1 · pith:73RMORB6new · submitted 2023-02-13 · 🌌 astro-ph.HE

VERITAS and Fermi-LAT constraints on the Gamma-ray Emission from Superluminous Supernovae SN2015bn and SN2017egm

A. Acharyya , C. B. Adams , P. Bangale , W. Benbow , J. H. Buckley , M. Capasso , V. V. Dwarkadas , M. Errando
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A. Falcone Q. Feng J. P. Finley G. M. Foote L. Fortson A. Furniss G. Gallagher A. Gent W. F Hanlon O. Hervet J. Holder T. B. Humensky W. Jin P. Kaaret M. Kertzman M. Kherlakian D. Kieda T. K Kleiner S. Kumar M. J. Lang M. Lundy G. Maier C. E McGrath J. Millis P. Moriarty R. Mukherjee M. Nievas-Rosillo S. O'Brien R. A. Ong S. R. Patel K. Pfrang M. Pohl E. Pueschel J. Quinn K. Ragan P. T. Reynolds D. Ribeiro E. Roache J. L. Ryan I. Sadeh M. Santander G. H. Sembroski R. Shang M. Splettstoesser D. Tak J. V. Tucci A. Weinstein D. A. Williams B. D. Metzger M. Nicholl I. Vurm
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classification 🌌 astro-ph.HE
keywords emissiongamma-raymagnetarslsnesupernovaeveritasenergyfermi-lat
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Superluminous supernovae (SLSNe) are a rare class of stellar explosions with luminosities ~10-100 times greater than ordinary core-collapse supernovae. One popular model to explain the enhanced optical output of hydrogen-poor (Type I) SLSNe invokes energy injection from a rapidly spinning magnetar. A prediction in this case is that high-energy gamma rays, generated in the wind nebula of the magnetar, could escape through the expanding supernova ejecta at late times (months or more after optical peak). This paper presents a search for gamma-ray emission in the broad energy band from 100 MeV to 30 TeV from two Type I SLSNe, SN2015bn, and SN2017egm, using observations from Fermi-LAT and VERITAS. Although no gamma-ray emission was detected from either source, the derived upper limits approach the putative magnetar's spin-down luminosity. Prospects are explored for detecting very-high-energy (VHE; 100 GeV - 100 TeV) emission from SLSNe-I with existing and planned facilities such as VERITAS and CTA.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. On the Gamma-ray Efficiency of Superluminous Supernovae: Potential Detections and Population-Level Constraints

    astro-ph.HE 2026-04 unverdicted novelty 7.0

    No significant GeV emission from 223 SLSNe constrains GeV-to-optical efficiency to η < 1.3×10^{-3}, with <0.7% of events allowed above 10^{-2}; SN 2017egm shows a ~4σ excess favoring magnetar origin while SN 2018bsz does not.