Unveiling Supergiant Fast X‐Ray Transient Sources withINTEGRAL
نویسندگان
چکیده
منابع مشابه
XTE J1739–302 as a Supergiant Fast X-ray Transient
XTE J1739–302 is a transient X-ray source with unusually short outbursts, lasting on the order of hours. Here we give a summary of X-ray observations we have made of this object in outburst with the Rossi X-ray Timing Explorer (RXTE) and at a low level of activity with the Chandra X-ray Observatory, as well as observations made by other groups. Visible and infrared spectroscopy of the mass dono...
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Some of the most powerful and violent phenomena in the Universe shine brightly at these short wavelengths, such as supernova explosions – the fiery demise of a massive star’s life – and black holes, rapidly devouring matter. As a sign of their dynamic nature, many sources of X-rays and gamma rays exhibit distinct changes in their brightness, even over very short periods of time. Gamma-ray burst...
متن کاملDiscovery of the orbital period in the supergiant fast X - ray transient IGR J 17544 – 2619
The supergiant fast X-ray transient (SFXT) system IGR J17544–2619 has displayed many large outbursts in the past and is considered an archetypal example of SFXTs. A search of the INTEGRAL/ISGRI data archive from MJD 52698–54354 has revealed 11 outbursts and timing analysis of the light curve identifies a period of 4.926±0.001 days which we interpret as the orbital period of the system. We find ...
متن کاملNuSTAR Detection Of A Cyclotron Line In The Supergiant Fast X-ray Transient IGR J17544−2619
We present NuSTAR spectral and timing studies of the Supergiant Fast X-ray Transient (SFXT) IGR J17544−2619. The spectrum is well-described by a ∼ 1 keV blackbody and a hard continuum component, as expected from an accreting X-ray pulsar. We detect a cyclotron line at 17 keV, confirming that the compact object in IGR J17544−2619 is indeed a neutron star. This is the first measurement of the mag...
متن کاملJ 17544 − 2619 : A new supergiant fast X - ray transient revealed by optical / infrared observations ⋆
One of the most recent discoveries of the INTEGRAL observatory is the existence of a previously unknown population of X-ray sources in the inner arms of the Galaxy. IGR J17544−2619, IGR J16465−4507 and XTE J1739−302 are among these sources. Although the nature of these systems is still unexplained, the investigations of the optical/NIR counterparts of the two last sources, combined with high en...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2006
ISSN: 0004-637X,1538-4357
DOI: 10.1086/504827