[PDF] Top 20 A spectroscopic study of high mass X ray binaries

... orbital x>hase (the ellipticity ...as x-ray heating, gravity darkening is enhanced at the ...the x-ray source is transit ting the star. The minimum with the x-ray ... See full document

... Reprocessing has also been demonstrated through the technique of Doppler Tomography for individual spectral lines. The known period of the binary orbit is used to find the phase and velocity amplitude of emission ... See full document

... are ionized. This avoids recording overlapping emission due to Ti 3d electrons making transitions into both spin-orbit split Ti 2p core levels and simplifies the comparison to theory. However, at this energy, elastic and ... See full document

... The O K and Cr L edges lie within 60 eV of each other so it is instructive to examine absorption and nonresonant emis- sion spectra which encompass both edges. As shown in Fig. 5 Cr L absorption is much stronger than O K ... See full document

... our study, plus XTE J1118 + 480 next to the relationship given in equation (1); see ...Cyg X-2 would one expect reprocessing to be a significant fraction of the optical ...to X-rays is ... See full document

... low–mass X–ray binaries have been identified (Muno et ...ms X–ray pul- sar HETE ...of high–mass X–ray binaries have recently been ...obscured ... See full document

... The source exhibited strong fast variability in both XMM-Newton observations, as shown in Figure 6 [19]. The left panels plot the pn 250 s background-subtracted light curves, and the right panels plot the power density ... See full document

... at high accretion rates, i.e. near the Eddington rate. The high-mass flux deposits increasingly more matter in the transition zone, leading to expansion and radial scale change of this ... See full document

... Combining XLFs necessarily involves an assumption regarding the similarity of their shapes in individual galaxies. Although we did not detect statistically sig- nificant differences between different galaxies, this ... See full document

... coronal mass ejection Yuan et ...3:2 high-frequency QPO pairs observed in SIM state (or SPL state), which are fitted by invoking closed magnetic field configuration with disk corona model in ... See full document

... From our position inside the Milky Way, located in the Orion spur of the Sagittarius Arm, we have the ability to study the local structure and content of a spiral galaxy on the scale of in- dividual stellar ... See full document

... the study of the SMC carried out using RXTE over the period ...a high enough X-ray luminosity to compensate for the low collimator value) and datasets with less than 5 ... See full document

... Radio pulsars are commonly accepted to be neutron stars that are produced in the supernova explosions of their progenitor stars. They are thought to be born with rapid rotation speeds (∼50 Hz) but within a few 100,000 yr ... See full document

... total mass directly in front of the Be block amounts to 1 mm of aluminum in the cryostat plus some aluminized mylar thermal blankets, for a total mass of 2mm aluminum ... See full document

... the mass of the NS or the orbital inclination are higher than the assumed ...many high excitation lines arising from the companion in the spectral range covered by this ... See full document

... panels. For a heavier neutron star, more gas will accumulate and the absorption will get stronger. The heavier the neutron star, the more bended the accretion wake. This e ff ect is revealed in the orbital phase ... See full document

... follow-up study investigates the long-term evolution of the system and shows that a γ = 5/3 flow results in a stable disk accretion mode in which the disk becomes locked in one direction (Blondin, ... See full document

... an X-ray background at high redshifts could have increased the fractional ionization of protogalactic gas, offsetting the effects of photodissociation from ultraviolet (UV) feedback and allowing gas ... See full document

... Our chemical composition results are based on modelling of the accretion disc as very simple, single temperature, homogeneous, slabs of material for which we calculate the LTE spectrum. In real life these accretion discs ... See full document

... The work presented here set out to address whether an NTD Ge detector can fulfil the energy resolution required by future x-ray spectroscopic detectors. The ideal attenuation and E-field models ... See full document