ALMA and NOEMA constraints on synchrotron nebular emission from embryonic superluminous supernova remnants and radio–gamma-ray connection
| Autor: | Geoffrey C. Bower, Conor Omand, D. B. Fox, R. Margutti, Kohta Murase, Ryan Chornock, Hiroshi Nagai, Deanne L. Coppejans, Casey J. Law, Peter Mészáros, Kazumi Kashiyama |
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| Rok vydání: | 2021 |
| Předmět: |
High Energy Astrophysical Phenomena (astro-ph.HE)
Physics Astrophysics::High Energy Astrophysical Phenomena Gamma ray FOS: Physical sciences Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Magnetar Synchrotron law.invention Synchrotron emission Supernova Crab Nebula Astrophysics - Solar and Stellar Astrophysics Noema Pulsar Space and Planetary Science law Astrophysics - High Energy Astrophysical Phenomena Solar and Stellar Astrophysics (astro-ph.SR) Astrophysics::Galaxy Astrophysics |
| Zdroj: | Monthly Notices of the Royal Astronomical Society. 508:44-51 |
| ISSN: | 1365-2966 0035-8711 |
| Popis: | Fast-rotating pulsars and magnetars have been suggested as the central engines of super-luminous supernovae (SLSNe) and fast radio bursts, and this scenario naturally predicts non-thermal synchrotron emission from their nascent pulsar wind nebulae (PWNe). We report results of high-frequency radio observations with ALMA and NOEMA for three SLSNe (SN 2015bn, SN 2016ard, and SN 2017egm), and present a detailed theoretical model to calculate non-thermal emission from PWNe with an age of about 1-3 yr. We find that the ALMA data disfavors a PWN model motivated by the Crab nebula for SN 2015bn and SN 2017egm, and argue that this tension can be resolved if the nebular magnetization is very high or very low. Such models can be tested by future MeV-GeV gamma-ray telescopes such as AMEGO. Comment: 7 pages, 4 figures, 2 tables |
| Databáze: | OpenAIRE |
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