X-ray observation of radio supernova SN1979C by ASCA
| dc.creator | Ray, A. | |
| dc.creator | Petre, R. | |
| dc.creator | Schlegel, E. | |
| dc.date | 2000-04-07 | |
| dc.date.accessioned | 2026-07-07T01:53:04Z | |
| dc.date.available | 2026-07-07T01:53:04Z | |
| dc.description | We report on the X-ray observation of the radio selected supernova SN1979C carried out with ASCA in December 1997. The supernova of type II$_{L}$ was first observed in the optical and occurred in the weakly barred, almost face on spiral galaxy NGC 4321 (M100) which is at a distance of 17.1 Mpc, and contains at least three other supernovae discovered in this century. No point source was detected at the radio position of SN1979C in a 3' diameter half power response circle in a 27.3 ks SIS exposure. The background and galaxy subtracted SN signal had a 3$σ$ upper limit to the count rate of 1.2$\times 10^{-3}$ cps in the full ASCA SIS band (0.4-10.0 keV). These measurements give the first ever x-ray flux limit of a Type II$_{L}$ SN in the higher energy band ($\geq$ 2 keV) which is an important diagnostic of the {\it outgoing} shock wave ploughing through the circumstellar medium. | |
| dc.description | 4 pages, 1 figure; send comments to: akr@tifr.res.in | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0004104 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0004104 | |
| dc.identifier | Space Telescope Science Institute Symposium, May 1999, p.55 (M. Livio et al) | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/836 | |
| dc.subject | Astrophysics | |
| dc.title | X-ray observation of radio supernova SN1979C by ASCA | |
| dc.type | text |