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|
|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 .
third branch of Government
Land mobile radio channel usage measurements at the 1996 Summer Olympic Games
A library of Fathers of the Holy Catholic Church, anterior to the division of the East and West
Fiber optics in astronomy III
Insurance agents and brokers
Innovative thinking in risk, crisis, and disaster management
Franklin D. Roosevelt: His Life and Times
Richard Captain Johnny Grant
Di Stefano R. () Luminous supersoft X-ray sources as progenitors of type Ia supernovae. In: Greiner J. (eds) Supersoft X-Ray Sources. Lecture Notes in Physics, vol Cited by: 6. Abstract. Accreting white dwarfs have long been considered as candidates for Type Ia supernova progenitors.
With the discovery of luminous supersoft X-ray sources (LSXSs), a new class of white dwarf accretor has been proposed as a candidate progenitor by: 8. Get this from a library. Luminous supersoft X-ray sources as progenitors of Type Ia supernovae.
[R DiStefano; United States. National Aeronautics and Space Administration.]. Observations with X-ray satellite ROSAT over the past 5 years have established supersoft X-ray sources as a new class of objects in our Galaxy and beyond. Optical follow-up observations have revealed the binary nature of several of them.
Recent. Evolution of white dwarf binaries: supersoft X-ray sources and progenitors of type Ia supernovae X.-D. Li 1;2 and E.P.J. van den Heuvel 1 Astronomical Institute, University of Amsterdam, KruislaanSJ Amsterdam, The Netherlands 2 Department of Astronomy, Nanjing University, NanjingP.R.
China (email: [email protected]). Accretion disks in supersoft X-ray sources of ≥ M⊙ or massive white dwarfs that are progenitors of Type Ia supernovae.
In this Letter we report our optical studies of such a. Catalog of supersoft X-ray sources. the central white dwarf appears as a very luminous supersoft X-ray source for 1 to 9 years after the outburst.
It is the best type of Author: Jochen Greiner. Luminous supersoft X-ray sources were discovered with the Einstein observatory and have been established as an important new class of X-ray binaries on the basis of observations with the Roentgen Satellite (ROSAT).
They have extremely soft spectra (equivalent blackbody temperatures of ∼15–80 eV) and are highly luminous (bolometric luminosities of 10–10 erg s).
Cited by: Thermonuclear Supernovae. --A phenomenological approach to the formation of massive CO white dwarfs --The merging of white dwarfs --SNe Ia: on the binary progenitors and with spiral arms -- Scenarios for Type la supernovae -- The double degenerate population in the solar neighborhood -- Luminous supersoft X--ray sources as Type.
In the single degenerate (SD) scenario for Type Ia supernova (SN Ia) progenitors, an accreting white dwarf (WD) is expected to undergo a supersoft X-ray source (SSS) phase. Recently, Gilfanov and Bogdan (hereafter GB10) claimed that observed X-ray fluxes of early-type galaxies would be too low to be consistent with the prediction of the SD.
IK Pegasi (or HR ) is a binary star system in the constellation is just luminous enough to be seen with the unaided eye, at a distance of about light years from the Solar System.
The primary (IK Pegasi A) is an A-type main-sequence star that displays minor pulsations in is categorized as a Delta Scuti variable star and it has a periodic cycle of Constellation: Pegasus.
ASTR Final. STUDY. PLAY. Star A is more luminous than Star B (d) Star B is more luminous than Star A. Facts about the main sequence of star: progenitors of type Ia supernovae. A type II supernovae occurs when. an iron core collapses. A black hole can be detected by.
Relativistic jets are not expected to be produced by sources with soft or supersoft X-ray spectra, although two such systems are known to. An extremely luminous X-ray outburst at the birth of a supernova A. Soderberg1,2, the favoured8 progenitors of type Ibc supernovae. Wolf-Rayet stars are also argued9 to give rise to c-ray bursts accreting source) of a solar mass object, outbursts from ultra-luminous X-ray sources and type I X-ray bursts.
In summary, the properties of. CHANDRA DISCOVERY OF LUMINOUS SUPERSOFT X-RAY SOURCES IN M81, ValerySuleimanov,2 t,3 and KinwahWu4 ReceivedNovember9;acceptedMarch28 ABSTRACT AChandraACIS-Simagingobservation ofthenearbygalaxyM81(NGC)revealsnineluminoussoft.
There are insufﬁcient super-soft (∼ keV) X-ray sources in either spiral or elliptical galaxies to account for the rate of explosion of Type Ia supernovae (SNe Ia) in either the single-degenerate or the double-degenerate scenarios.
We quantify the amount of circumstellar matter that would be required to suppress the soft X-ray ﬂux by. > As I know of, an up-to-date list of SSXS is given by J.
Greiner (Catalog > of Luminous Supersoft X-Ray Sources, P of Supersoft X-Ray Sources, > Ed. Greiner,Springer). Is there any newer list. Thank you very much for the information.
I have once looked (but not read ;-) this book but overlooked the catalog. The book covers all aspects, ranging from the observations of SNe Ia at all Luminous Supersoft X-Ray Sources as Type Ia Progenitors. Pages Stefano, R. (et al.) The Late-Time Emission of Thermonuclear Supernovae.
Pages Ruiz-Lapuente, : Springer Netherlands. An ultraluminous X-ray source (ULX) is an astronomical source of X-rays that is less luminous than an active galactic nucleus but is more consistently luminous than any known stellar process (over 10 39 erg/s, or 10 32 watts), assuming that it radiates isotropically (the same in all directions).
Typically there is about one ULX per galaxy in galaxies which host them, but some. We predict that future wide-field X-ray surveys will catch each year hundreds of supernovae in the act of exploding.
On 9 January. et al. ; Nelemans et al. ). For type Ia supernova progen-itors the argument to look for X-ray 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 X-ray 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 .We review observations of ultraluminous X-ray sources (ULXs).
X-ray spectroscopic 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.