X-ray Swift observations of SN 2018cow

被引：57
作者：
Sandoval, L. E. Rivera [1 ]
Maccarone, T. J. [1 ]
Corsi, A. [1 ]
Brown, P. J. [2 ]
Pooley, D. [3 ]
Wheeler, J. C. [4 ]
机构：
[1] Texas Tech Univ, Dept Phys & Astron, Box 41051,Sci Bldg, Lubbock, TX 79409 USA
[2] Texas A&M Univ, Dept Phys & Astron, George P & Cynthia Woods Mitchell Inst Fundamenta, 4242 TAMU, College Stn, TX 77843 USA
[3] Trinity Univ, Dept Phys & Astron, San Antonio, TX 78212 USA
[4] Eureka Sci Inc, Oakland, CA USA
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2018年 / 480卷 / 01期
关键词：
gamma-ray burst: general; supernovae: individual: SN 2018cow; X-rays: stars; SUPERNOVA; SHOCK; AFTERGLOW; EVOLUTION;
D O I：
10.1093/mnrasl/sly145
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Supernova (SN) 2018cow is an optical transient detected in the galaxy CGCG 137-068. It has been classified as an 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 similar to 62 ks of X-ray observations taken with the Neil Gehrels Swift Observatory over 27 d. We found a variable behaviour in the 0.3-10 keV X-ray light curve of SN 2018cow, with variability time-scales 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.
引用
收藏
页码：L146 / L150
页数：5
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