Results 31 to 40 of about 329,488 (298)
The faintest star forming galaxies [PDF]
, 2002 I briefly report on the X-ray detection of 10 radio sub-mJy sources in the 2 Ms Chandra observation of the Hubble Deep Field North region. These sources follow the same radio/X-ray luminosities relation which holds for nearby galaxies. Making use of this
Ranalli, Piero
core +2 more sources
X-ray spectroscopic survey of highly accreting AGN [PDF]
Astronomy & Astrophysics, 2022 Improving our understanding of the nuclear properties of high-Eddington-ratio (λEdd) active galactic nuclei (AGN) is necessary since at this regime the radiation pressure is expected to affect the structure and efficiency of the accretion disc-corona system.
M. Laurenti +16 more
openaire +6 more sources
, 1998 A review of recent developments in the field of X-ray surveys, especially in the hard (2-10 and 5-10 keV) bands, is given. A new detailed comparison between the measurements in the hard band and extrapolations from ROSAT counts, that takes into proper account the observed distribution of spectral slopes, is presented.
Giommi, P., Fiore, F., Perri, M.
openaire +2 more sources
A Richness Study of 14 Distant X-ray Clusters From the 160 Square Degree Survey [PDF]
, 2001 We have measured the surface density of galaxies toward 14 X-ray-selected cluster candidates at redshifts greater than z=0.46, and we show that they are associated with rich galaxy concentrations.
A. Hornstrup +14 more
core +2 more sources
The OPTX Project I: The Flux and Redshift Catalogs for the CLANS, CLASXS, and CDF-N fields
, 2008 We present the redshift catalogs for the X-ray sources detected in the Chandra Deep Field North (CDF-N), the Chandra Large Area Synoptic X-ray Survey (CLASXS), and the Chandra Lockman Area North Survey (CLANS).
A. J. Barger +6 more
core +1 more source
TheSwiftX-ray Telescope Cluster Survey [PDF]
Astronomy & Astrophysics, 2014 (Abridged) We present a spectral analysis of a new, flux-limited sample of 72 X-ray selected clusters of galaxies identified with the X-ray Telescope (XRT) on board the Swift satellite down to a flux limit of ~10-14 erg/s/cm2 (SWXCS, Tundo et al. 2012).
Tozzi, P. +9 more
openaire +3 more sources
Using radio emission to detect isolated and quiescent accreting black holes
, 2005 We discuss the implications of new relations between black holes' masses, X-ray luminosities and radio luminosities, as well as the properties of the next generation of radio telescopes, for the goal of finding isolated accreting black holes.
Maccarone, Thomas J.
core +1 more source
Population of the Galactic X-ray binaries and eRosita [PDF]
, 2014 The population of the Galactic X-ray binaries has been mostly probed with moderately sensitive hard X-ray surveys so far. The eRosita mission will provide, for the first time a sensitive all-sky X-ray survey in the 2-10 keV energy range, where the X-ray ...
Doroshenko, V. +3 more
core +1 more source
The Soft X-ray Excess in Quasars and Deep X-ray Surveys [PDF]
Symposium - International Astronomical Union, 1994 We examine the surface density of quasars expected in the ROSAT PSPC surveys, using quasar optical luminosity functions and model continuum spectra including a soft X-ray excess. We show that the surface density is a sensitive function of the characteristic energy of the soft excess, and the absorption within the quasar as well as the interstellar ...
Ajit Kembhavi, A. C. Fabian
openaire +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT A second allogeneic (allo‐)hematopoietic stem cell transplantation (HSCT2) is a potential curative option for pediatric patients with acute lymphoblastic leukemia (ALL) following relapse after first allogeneic transplantation (HSCT1), but its efficacy is limited by high relapse rates and transplant‐related toxicity in highly pretreated ...
Ava Momm +10 more
wiley +1 more source