[PDF] Top 20 A Chandra X‐Ray Study of the Globular Cluster M80

... Within the half-mass radius we choose the sensitivity of our detection algorithms to identify no more than one spurious source. However, several sources obvious to the eye remained undetected, so we further increased the ... See full document

... the X-ray emission from 47 Tuc MSPs is largely thermal radiation from the surface (Grindlay et ...between X-ray and radio signals indicates that additional MSPs in 47 Tuc will prob- ably have ... See full document

... were X-ray selected (as were the 47 Tuc CVs), unlike other classes of CV, implying that the rela- tively high X-ray luminosities could be partially selection effects, perhaps weakening the ... See full document

... a study of the different source populations of M 31 that can be observed in ...in X-rays for the first ...on X-ray hardness ratios, spatial extent of the sources, and by cross correlating with ... See full document

... the X-ray observations were performed using the CIAO 4 version ...the Chandra observations were first filtered to include only those events with energies between ...the X-ray photons ... See full document

... in globular clusters (GCs) seem to be rare with only 13 detections in the 157 known Galactic ...A Chandra X-ray source is coincident with this DN and shows both a spectrum and variability ... See full document

... the X–ray, optical, and radio prop- erties of the accretion–powered X–ray pulsars are very similar to those of non–pulsating neutron star soft X– ray transients (SXTs; ...an ... See full document

... and Chandra data. The study of X-ray and SZ scaling relations and structural prop- erties have extensively taken advantage of this technique, allowing to firmly establish the self-similar ... See full document

... with globular clusters, 16 with supernova remnants, and 10 with radio sources and galaxies, leaving 80% of sources without an optical / radio ...dwarf X-ray binary) in M31 (Supper et ...and ... See full document

... approximate cluster center (X mark), the 24 00 core radius (large circle); X-ray sources with optical identifications as for CVs (small circles), MSPs or qLMXBs (larger circles), and active ... See full document

... I X-ray bursts, we have a good han- dle on the spin frequency of the neutron star in several nor- mal transients such as Aql X-1 (549 Hz; Zhang et ...Aql X-1 (19 hr; Welsh, Robinson, & ... See full document

... the cluster core (Lyne et ...the cluster parameters are best determined in the ...new cluster pa- rameters derived by CLG02 in our analysis, particularly the red- dening, distance, core radius, and ... See full document

... in globular clusters, have revealed that their X-ray emission can be of thermal and/or non-thermal character (see Zavlin 2007; Bogdanov & Grindlay 2008; for a ...the X-rays appear to be ... See full document

... crowded globular cluster fields where identification is an easy matter, the density scans can only be produced at a maximum rate of about ten per ... See full document

... We have remeasured the fluxes of the groups/clusters in these additional fields from archival ROSAT PSPC data using the same method as for the UK Deep survey field, except that in several (higher signal-to-noise ratio) ... See full document

... The Chandra X-ray Observatory has been described by Weisskopf, O’Dell, & van Spey- broeck (1996); and its HRC-I by Murray et ...used Chandra HRC-I to image fields around visually bright, ... See full document

... current X-ray telescopes have pinpointed statistical samples of accreting extragalactic sources, probing AGN demographics across a diverse array of AGN types to z ∼ ...other Chandra and XMM-Newton ... See full document

... the Chandra Call for Proposals solicited proposals for X-ray Visionary Projects (XVP) which described major coherent science programs to address key, high-impact scien- tific questions in current ... See full document

... Jupiter’s X-ray hot spots in the observation reported here: 1) the 9-12-min periodicity observed is on a shorter timescale than predicted; 2) for subsolar point reconnection, both poles should pulse ... See full document

... galaxy cluster sam- ple (Popesso et al. 2004) to study the correlations between the optical luminosity and other important properties of galaxy clusters such as their mass, line-of-sight velocity ... See full document