Radio emission from SN 1181 hosting a white dwarf merger product

Autor:	Ko, Takatoshi, Tsuna, Daichi, Hatsukade, Bunyo, Shigeyama, Toshikazu
Rok vydání:	2024
Předmět:	Astrophysics - Solar and Stellar Astrophysics Astrophysics - Astrophysics of Galaxies Astrophysics - High Energy Astrophysical Phenomena
Druh dokumentu:	Working Paper
Popis:	The remnant of the historical supernova 1181 is claimed to be associated with a white dwarf merger remnant J005311. The supernova remnant (SNR) shock, and a termination shock expected to be formed by the intense wind of J005311, are potential sites for radio emission via synchrotron emission from shock-accelerated electrons. In this paper, we estimate the radio emission from these two shocks, and find the peak radio flux to be 0.1--10 mJy (at 0.01--1 GHz) in the outer SNR shock and 0.01--0.1 mJy (at 1--10 GHz) in the inner termination shock. We also search for radio emission from this source in the archival data of the Karl G. Jansky Very Large Array (VLA) Sky Survey at 3 GHz, NRAO VLA Sky Survey at 1.4 GHz and the Canadian Galactic Plane Survey at 408 MHz, resulting in no significant detection. While targeted observations with higher sensitivity are desired, we particularly encourage those at higher frequency and angular resolution to probe the inner termination shock and its evolution. Comment: 8 pages, 4 figures, 1 Japanese movie (https://j005311.com/). Accepted for publication in PASJ
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2401.12487 Zobrazit plný text záznamu View this record from Arxiv