Supernova
نویسندگان
چکیده
منابع مشابه
Supernova Neutrinos
A nascent neutron star resulting from stellar collapse is a prodigious source of neutrinos of all flavors. While the most basic features of this neutrino emission can be estimated from simple considerations, the detailed simulation of the neutrinos’ decoupling from the hot neutron star is not yet computationally tractable in its full glory, being a time-dependent six-dimensional transport probl...
متن کاملSupernova 1987A
First, I summarize the main points that we have learned about the interior of SN1987A. Then, I describe in greater detail the rapidly developing impact of SN1987A with its inner circumstellar ring.
متن کاملCosmic Supernova Rate History and Type Ia Supernova Progenitors
We adopt a single-degenerate (SD) scenario, which assumes that a C+O white dwarf accretes H-rich meterials from the binary companion star and grows its mass to the Chandrasekhar mass to explode as a Type Ia supernova (SN Ia). There are two progenitor systems: One is a red-giant (RG) companion with the initial mass of MRG,0 ∼ 0.9 − 1.5M⊙ and an orbital period of tens to hundreds days 1 2 . The o...
متن کاملSupernova 2008d: a Repetition of Supernova 1987a in a Binary
The Supernova 2008D is similar to that of SN 1987Awithout the H-envelope. Soderberg et al. (2008) reported the serendipitous discovery of the SN2008D at the time of the explosion, accompanied by an X-ray outburst XRF080109. The central remnant, which we believe to be the black-hole (BH) central engine in the Blandford-Znajek mechanism, is estimated, on the basis of the 7% Ni production, to have...
متن کاملImaging of Radio Supernova
As the shock and expanding shell of a supernova plow out through the circumstellar material at thousands of km s −1 , radio emission is generated. VLBI observations of this radio emission are presently the only means to directly image the expanding shell of any supernova much farther away than SN 1987A. The last decade has seen great progress in VLBI imaging of radio supernovae. In particular, ...
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ژورنال
عنوان ژورنال: XIKUA Boletín Científico de la Escuela Superior de Tlahuelilpan
سال: 2020
ISSN: 2007-4948
DOI: 10.29057/xikua.v8i15.5316