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相关论文: The Faintest X-ray Sources from z=0-8

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We use the observed unresolved cosmic X-ray background (CXRB) in the 0.5-2 keV band and existing upper limits on the 21-cm power spectrum to constrain the high-redshift population of X-ray sources, focusing on their effect on the thermal…

宇宙学与河外天体物理 · 物理学 2016-10-26 Anastasia Fialkov , Aviad Cohen , Rennan Barkana , Joseph Silk

We present a catalogue of 3405 X-ray sources from the ROSAT All Sky Survey (RASS) Bright Source Catalogue which fall within the area covered by the 6dF Galaxy Survey (6dFGS). The catalogue is count-rate limited at 0.05 cts\s in the X-ray…

宇宙学与河外天体物理 · 物理学 2015-05-14 Elizabeth K. Mahony , Scott M. Croom , Brian J. Boyle , Alastair C. Edge , Tom Mauch , Elaine M. Sadler

We present Chandra and Spitzer data of the 186, extragalactic, hard 2-10 keV X-ray selected sources, which lie in the central part of the Chandra Deep Field South (CDFS). For the vast majority of sources (99.5%) there is a spectroscopic or…

天体物理学 · 物理学 2009-11-11 I. Georgantopoulos , A. Georgakakis , A. Akylas

We exploit the 7 Ms \textit{Chandra} observations in the \chandra\,Deep Field-South (\mbox{CDF-S}), the deepest X-ray survey to date, coupled with CANDELS/GOODS-S data, to measure the total X-ray emission arising from 2076 galaxies at…

X-ray sources in spiral galaxies can be approximately classified into bulge and disk populations. The bulge (or hard) sources have X-ray colors which are consistent with Low Mass X-ray Binaries (LMXB) but the the disk sources have softer…

高能天体物理现象 · 物理学 2014-11-20 A. H. Prestwich , R. E. Kilgard , F. Primini , J. C. McDowell , A. Zezas

We have used the Chandra X-ray Observatory to resolve spatially and spectrally the X-ray emission from the Circinus Galaxy. We report here on the nature of the X-ray emission from the off-nuclear point sources associated with the disk of…

天体物理学 · 物理学 2009-11-06 F. E. Bauer , W. N. Brandt , R. M. Sambruna , G. Chartas , G. P. Garmire , S. Kaspi , H. Netzer

We carried out extremely sensitive Submillimeter Array (SMA) 340 GHz (860 micron) continuum imaging of a complete sample of SCUBA 850 micron sources (>4 sigma) with fluxes >3 mJy in the GOODS-N. Using these data and new SCUBA-2 data, we do…

宇宙学与河外天体物理 · 物理学 2015-06-11 A. J. Barger , W. -H. Wang , L. L. Cowie , F. N. Owen , C. -C. Chen , J. P. Williams

The Two Micron All Sky Survey (2MASS) is finding previously unidentified, luminous red active galactic nuclei (AGN). This new sample has a space density similar to, or greater than, previously known AGN, suggesting that a large fraction of…

天体物理学 · 物理学 2009-11-07 Belinda J. Wilkes , Gary D. Schmidt , Roc M. Cutri , Himel Ghosh , Dean C. Hines , Brant Nelson , Paul Smith

We describe the infrared properties of sources detected over ~36 deg^2 of sky in the GAMA 15-hr equatorial field, using data from both the Herschel Astrophysical Terahertz Large-Area Survey (H-ATLAS) and Wide-field Infrared Survey (WISE).…

We present a cross-correlation analysis to constrain the faint galaxy contribution to the cosmic X-ray background (XRB). Cross-correlating faint optical galaxy catalogues with unidentified X-ray sources from 3 deep ROSAT fields we find that…

天体物理学 · 物理学 2015-06-24 O. Almaini , T. Shanks , R. E. Griffiths , B. J. Boyle , N. Roche , I. Georgantopoulos , G. C. Stewart

We interpret the large variety of redshift distributions of galaxies found by far-infrared and (sub-)millimeter deep surveys depending on their depth and wavelength using the B\'ethermin et al. (2012) phenomenological model of galaxy…

星系天体物理 · 物理学 2015-04-15 Matthieu Béthermin , Carlos De Breuck , Mark Sargent , Emanuele Daddi

We present a statistically complete sample of very X-ray luminous galaxy clusters detected in the MAssive Cluster Survey (MACS). This second MACS release comprises all 34 MACS clusters with nominal X-ray fluxes in excess of 2x10^(-12)…

宇宙学与河外天体物理 · 物理学 2015-05-18 H. Ebeling , A. C. Edge , A. Mantz , E. Barrett , J. P. Henry , C. J. Ma , L. van Speybroeck

The interstellar medium of galaxies, with temperatures reaching several million degrees, provides a pivotal perspective for understanding the physical and chemical properties of star formation, galactic evolution, and their associated…

星系天体物理 · 物理学 2025-06-24 Chunyi Zhang , Junfeng Wang

We present a self-consistent approach to the modeling of X-ray clusters of galaxies in a flat universe. Employing the Press and Schechter (1974) formalism to derive the mass function and relating the observable properties of clusters to…

天体物理学 · 物理学 2016-08-30 J. Oukbir , J. G. Bartlett , A. Blanchard

We publicly release the spectroscopic and photometric redshift catalog of the sources detected with Chandra in the field of the $z$=6.3 quasar SDSS J1030+0525. This is currently the fifth deepest X-ray field, and reaches a 0.5-2 keV flux…

We present initial results and the source catalog from the NuSTAR survey of the Extended Chandra Deep Field South (hereafter, ECDFS) - currently the deepest contiguous component of the NuSTAR extragalactic survey program. The survey covers…

We report the results of J-band infrared spectroscopy of a sample of 13 z=1 field galaxies drawn from the Canada-France Redshift Survey, targeting galaxies whose redshifts place the rest frame H-alpha line emission from HII regions in…

天体物理学 · 物理学 2009-10-30 Karl Glazebrook , Chris Blake , Frossie Economou , Simon Lilly , Matthew Colless

We present catalogs for the ~2 Ms Chandra Deep Field-North, currently the deepest X-ray observation of the Universe in the 0.5-8.0 keV band. Five hundred and three (503) X-ray sources are detected over an ~448 sq.arcmin area in up to seven…

Context: We use the first XMM serendipitous source catalogue (1XMM) to compile a sample of normal X-ray galaxies Aims: We seek to expand the database of X-ray selected normal galaxies at intermediate redshifts and examine the relation…

宇宙学与河外天体物理 · 物理学 2015-05-13 E. Rovilos , I. Georgantopoulos , P. Tzanavaris , M. Pracy , M. Whiting , D. Woods , C. Goudis

We searched for high-z quasars within the X-ray source population detected in the contiguous $\sim 140^2$ eFEDS field observed by eROSITA during the performance verification phase. We collected the available spectroscopic information in the…