3 edition of Luminous supersoft X-ray sources as progenitors of Type Ia supernovae found in the catalog.
Luminous supersoft X-ray sources as progenitors of Type Ia supernovae
by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va
Written in English
|Series||[NASA contractor report] -- NASA-CR-203600., NASA contractor report -- NASA CR-203600.|
|Contributions||United States. National Aeronautics and Space Administration.|
|The Physical Object|
models for the progenitors of Type Ia supernovae; luminous supersoft X-ray sources, quasisoft X-ray sources and their physical natures; X-ray binaries in external galaxies, especially the ways in which they in uence and are in uenced by their environments; gravitational microlensing, including by binaries, planets, and nearby stars and stellar. Massive stars end their short lives in spectacular explosions, supernovae, that synthesize new elements and drive galaxy evolution. Throughout history supernovae were discovered chiefly through their delayed optical light, preventing observations in the first moments (hours to days) following the explosion. As a result, the progenitors of some supernovae and the events .
Supernova remnants: the X-ray perspective Jacco Vink Abstract Supernova remnants are beautiful astronomical objects that are also of high scientiﬁc interest, because they provide insights into supernova explosion mechanisms, and because they are the likely sources of Galactic cosmic rays. X-ray observationsare an important means to study File Size: 4MB. The spectra of a Type Ia supernova contain a distinct silicon absorption line around Å (vertical orange line as seen in the figure); this line is unique among Type I supernovae and so defines the subgroup-a of the Type I supernovae. Type Ib and Type Ic are characterized by the presence or absence of a helium line around Å. The acceleration of the expansion of the universe, and theneed for Dark Energy, were inferred from the observations of Type Iasupernovae (SNe Ia) 1;2. There is consensus that SNeIa are thermonuclearexplosions that destroy carbon-oxygen white dwarf stars that accretematter from a companion star3.
Astronomers still do not know if Type Ia supernovae arise in a binary system containing a white dwarf and a 24 A NEW SCIENCE STRATEGY FOR SPACE ASTRONOMY AND ASTROPHYSICS normal star, two white dwarfs, or some other configuration of stars. The accreting white dwarf supersoft x-ray sources may be related to the progenitors of Type Ia . Dr Ivo Rolf Seitenzahl. Senior Lecturer Laming JM; Vogt FPA, , 'Optical Tomography of Chemical Elements Synthesized in Type Ia Supernovae', Physical Gilfanov M; Seitenzahl IR; Woods TE; Vogt FPA, , 'Excluding supersoft X-ray sources as progenitors for four Type Ia supernovae in the Large Magellanic Cloud. ULTRA-LUMINOUS X-RAY SOURCES IN HARO 11 AND THE ROLE OF X-RAY BINARIES IN FEEDBACK IN Lyα EMITTING GALAXIES A. H. Prestwich1, F. Jackson2, P. Kaaret3, M. Brorby3, T. P. Roberts4, S. H. Saar1, and M. Yukita5 1 Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA , USA 2 Department of Physics and Cited by:
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SyntaxTextGen not activatedpdf al. ; Nelemans et al. ). For type Ia supernova progen-itors the argument to look for Pdf progenitors is the sugges-tion that supersoft X-ray sources may produce type Ia supernovae, based on the accreting white dwarf model (Whelan & Iben ; Nomoto ).
For type Ib and Ic supernovae, the binary progen.Astrophysical Download pdf sources are astronomical objects with physical properties which result in the emission of X-rays.
There are a number of types of astrophysical objects which emit X-rays, from galaxy clusters, through black holes in active galactic nuclei (AGN) to galactic objects such as supernova remnants, stars, and binary stars containing a white dwarf (cataclysmic variable .Ebook review observations of ultraluminous X-ray sources (ULXs).
X-ray ebook and timing studies of ULXs suggest a new accretion state distinct from those seen in Galactic stellar-mass black hole binaries. The detection of coherent pulsations indicates the presence of neutron-star accretors in three ULXs and therefore apparently super-Eddington luminosities.
Optical and X Author: Philip Kaaret, Hua Feng, Timothy P. Roberts.