Accueil > Séminaires d’Astrophysique > Extreme Environments of Neutron Stars in Low-mass X-ray Binaries

 

Extreme Environments of Neutron Stars in Low-mass X-ray Binaries

Sudip Bhattacharyya (Tata Institute of Fundamental Research, Inde) — au CESR

Par Francois RINCON - 4/12/2009

 

Séminaires d’Astrophysique

de l’Observatoire Midi-Pyrénées


Séminaire de

Sudip Bhattacharyya

(Tata Institute of Fundamental Research, Inde)

Jeudi 14 Janvier 2010 à 11h

CESR


Extreme Environments of Neutron Stars in Low-mass X-ray Binaries

A neutron star is an extremely dense star with a core density of five to ten times the density of an atomic nucleus. Such a star provides a unique opportunity to probe some aspects of extreme environments, ranging from supranuclear matter to very strong gravity. A neutron star low-mass X-ray binary (LMXB) is a binary stellar system with a neutron star and a low-mass companion star rotating around each other. In this system the neutron star accretes matter from the companion, and as this matter falls into the deep potential well of the neutron star, the gravitational potential energy is released primarily in the X-ray wavelengths. Timing and spectral analysis of this X-ray emission can be used to probe the extreme environments mentioned above. Here we will discuss two X-ray phenomena of neutron star LMXBs : broad relativistic spectral iron emission lines and thermonuclear X-ray bursts.

 

 

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Laboratoire Astrophysique de Toulouse - Tarbes (UMR5572)

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