X-ray Binaries
SPECTRAL PROPERTIES OF X RAY BINARIES IN CENTAURUS A
... extragalactic X-ray binaries (XBs) located beyond the Local Group have been made possible thanks to the excellent sensitivity and spatial resolution of the Chandra X-ray Observatory ...
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The Isotopic 6Li/7Li ratio in Centaurus X 4 and the origin of Li in X ray Binaries
... SXTs. X-ray binaries spend several Gyr of their life- times as tidally locked binaries and it is only when they come into the Roche-lobe contact that some Li depletion, through mass transfer, ...
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High energy processes in young stellar objects and high-mass X-ray binaries
... Fermi is a gamma-ray space telescope launched in June 2008. It carries two instruments: the Large Area Telescope (LAT) and the Gamma-ray Burst Monitor (GBM). The LAT works in the 20 MeV to 300 GeV energy ...
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Searching for supergiant fast X ray transients with Swift
... of X-ray binaries with supergiant ...is, X-ray binaries for which optical/IR spectroscopy has firmly established the presence of a supergiant primary of O or B spectral type ...
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Unveiling the nature of INTEGRAL objects through optical spectroscopy VIII Identification of 44 newly detected hard X ray sources
... Hard X-ray surveys performed by the INTEGRAL satellite have discovered a conspicuous fraction (up to 30%) of unidentified objects among the detected ...soft X-ray, radio, and / or optical ...
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Near Infrared Counterparts to Chandra X Ray Sources Toward the Galactic Center I Statistics and a Catalog of Candidates
... of X-ray sources is unparalleled elsewhere in the sky by over an order of ...soft X-rays (E < 1 keV) of more than half of them are highly absorbed, indicative of distances near the Galactic ...
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Extended X ray emission in the IC 2497 Hanny's Voorwerp system: energy injection in the gas around a fading AGN
... The idea of a bubble inflated by an AGN undergoing a state change fits naturally into the general picture of unifying black hole (BH) accretion physics from X-ray binaries (XRB) to AGN. Rapid state ...
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Luminosity functions of LMXBs in different stellar environments
... cosmic X-ray background sources ...deep X-ray obser- vations, in the Msec range, to reach the required ...of X-ray binaries located in different environments on our ...
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Unveiling the nature of INTEGRAL objects through optical spectroscopy X A new multi year, multi observatory campaign
... Regarding the determination of the distance for the X-ray binaries discussed in this section, we assumed that IGR J00515−7328 and RX J0101.8−7223 are located in the SMC and thus at a distance of 60 ...
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Luminosity functions of LMXBs in centaurus a : globular clusters versus the field
... of X-ray point sources, Cen A is, in many ways, a complicated ...the X-ray sources in these lanes, as well as a possible contribution to the source sample from high-mass X-ray ...
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The Historical X ray Transient KY TrA in quiescence
... Low-mass X-ray binaries (LMXBs) are mass-exchange binaries that contain an accreting black hole or neutron star primary and a low-mass secondary ...brightest X-ray sources in the ...
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Globular Clusters and X Ray Point Sources in Centaurus A (NGC 5128)
... outlying X-ray sources in the BVI diagram are quite faint, and could represent contaminant sources (foreground stars or background ...matched X-ray sources with (B V ) < 0:5 are unconfirmed ...
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X ray spectral constraints for z approximate to 2 massive galaxies: the identification of reflection dominated active galactic nuclei
... flat X-ray spectral slope for the IR-excess galaxies appears to suggest that we have now individually de- tected many of the heavily obscured AGNs that were origi- nally contributing to the stacked data in ...
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Modificación de superficies de vidrio y nanoparticulas de sílica con complejos carbenos de Fischer : aplicaciones en nanociencia
... desde siempre (Díaz et al., 2008). Por ejemplo, todas las proteínas provienen de un con- junto modesto de monómeros conformados por solo 20 aminoácidos capaces de enlazarse entre si reversiblemente mediante reacciones ...
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WEAK HARD X RAY EMISSION FROM TWO BROAD ABSORPTION LINE QUASARS OBSERVED WITH NuSTAR: COMPTON THICK ABSORPTION OR INTRINSIC X RAY WEAKNESS?
... intrinsic X-ray weakness scenario may still work, based on the following ...and X-ray photometric data points assuming a power- law spectrum ...keV X-ray emission while leaving ...
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Heavily Obscured AGN in Star Forming Galaxies at z sime 2
... performed X-ray stacking in the approximate rest-frame, ...most X-ray detectors with modest energy resolution, a delta function of incident photons is redistributed over a broad range of ...
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A transient sub eddington black hole x ray binary candidate in the dust lanes of centaurus a
... XMM-Newton X-ray observatories have made possible the detailed study of extragalactic X-ray binary (XB) sources during the last ...31 X-ray transients are found in three distinct ...
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PHASE RESOLVED NuSTAR AND SWIFT XRT OBSERVATIONS OF MAGNETAR 4U 0142+61
... We follow the method presented in Hascoët et al. ( 2014 ) , and explore the whole parameter space by fi tting the phase- averaged spectrum of the total emission ( pulsed+unpulsed ) and phase-resolved spectra of the pulsed ...
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A new, faint population of X ray transients
... the X-ray transient was detected, as part of DDT programme ...the X-ray ...the X-ray and R-band images to ≈ ...the X-ray tran- sient, with an estimated magnitude ...
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A NuSTAR survey of nearby ultraluminous infrared galaxies
... Suzaku X-ray Imaging Spectrometer ( XIS ) data is likely due to an intervening absorber, since a change by a factor of 30 in intrinsic fl ux is rare in AGNs ( Gibson & Brandt 2012 ) ...
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