The fading of supernova 1997D
| Autor: | Shmuel Balberg, Luca Zampieri, Stuart L. Shapiro, Massimo Turatto, S. Benetti, K. Nomoto, Paolo A. Mazzali, Enrico Cappellaro, T. Nakamura, Ferdinando Patat |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Physics
Astrophysics::High Energy Astrophysical Phenomena Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Luminosity Black hole Neutron star Pulsar Space and Planetary Science Astrophysics::Solar and Stellar Astrophysics Fading Ejecta Low Mass Astrophysics::Galaxy Astrophysics |
| Zdroj: | Monthly Notices of the Royal Astronomical Society. 322:361-368 |
| ISSN: | 1365-2966 0035-8711 |
| DOI: | 10.1046/j.1365-8711.2001.04122.x |
| Popis: | We present a new set of spectroscopic and photometric data extending the observations of SN 1997D to over 400 days after the explosion. These observations confirm the peculiar properties of SN 1997D, such as the very low abundance of 56Co (0.002 Msolar) and the low expansion velocity of the ejecta (~1000 km/s). We discuss the implications of these observations for the character of the progenitor and the nature of the remnant showing that a Crab-like pulsar or an accreting neutron star formed in the explosion of a low mass progenitor should already have produced a detectable luminosity at this epoch, in contrast with photometric data. On the other hand, the explosion of a high mass progenitor with the formation of a black hole is consistent with the available observations. The consequences of this conclusion regarding the nature of the explosion and the prospects of directly identifying the black hole are also addressed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text