X-ray Swift observations of SN 2018cow
| Autor: | Alessandra Corsi, L. E. Rivera Sandoval, Peter J. Brown, J. C. Wheeler, David Pooley, Thomas J. Maccarone |
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| Rok vydání: | 2018 |
| Předmět: |
010504 meteorology & atmospheric sciences
Astrophysics::High Energy Astrophysical Phenomena FOS: Physical sciences Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics 01 natural sciences Observatory 0103 physical sciences Astrophysics::Solar and Stellar Astrophysics Ejecta 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) Astrophysics::Galaxy Astrophysics 0105 earth and related environmental sciences High Energy Astrophysical Phenomena (astro-ph.HE) Physics X-ray Astronomy and Astrophysics Light curve Astrophysics - Astrophysics of Galaxies Galaxy Supernova Stars Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) Astrophysics - High Energy Astrophysical Phenomena Gamma-ray burst |
| Zdroj: | Monthly Notices of the Royal Astronomical Society: Letters. 480:L146-L150 |
| ISSN: | 1745-3933 1745-3925 |
| DOI: | 10.1093/mnrasl/sly145 |
| Popis: | Supernova (SN) 2018cow (or AT2018cow) is an optical transient detected in the galaxy CGCG 137-068. It has been classified as a SN due to various characteristics in its optical spectra. The transient is also a bright X-ray source. We present results of the analysis of ~62ks of X-ray observations taken with the Neil Gehrels Swift Observatory over 27 days. We found a variable behavior in the 0.3-10 keV X-ray light curve of SN 2018cow, with variability timescales of days. The observed X-ray variability could be due to the interaction between the SN ejecta and a non-uniform circumstellar medium, perhaps related to previous mass ejections from a luminous-blue-variable-like progenitor. Comment: Matches order of figures and corrects minor typos in units, as seeing in the MNRASL version |
| Databáze: | OpenAIRE |
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