X-ray spectra
XZ: Deriving redshifts from X ray spectra of obscured AGN
... 2004) detects gamma-ray bursts and observes X-ray spectra with XRT. Obtaining redshift constraints is crucial in order to probe massive star formation in the early Universe. Today, this ...
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Unveiling the nature of INTEGRAL objects through optical spectroscopy X A new multi year, multi observatory campaign
... hard X-ray emission is the sum of the contributions of two narrow-line AGNs within the IBIS error circle of the source but at different redshifts (see Table ...the X-ray fluxes of Landi et ...
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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?
... scattered X-ray spectra from a toroidal-shaped absorber/reprocessor in a physical and self-consistent way, and it was designed to model X-ray spectra in the Compton-thick ...
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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
... Deeper X-ray observations (leading to X-ray spectra with more counts) will allow us to deproject the emission and carefully constrain the intrinsic temperature, density and ...
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X ray spectral constraints for z approximate to 2 massive galaxies: the identification of reflection dominated active galactic nuclei
... the spectra are combined and binned to increase the signal-to-noise ...composite X-ray spectrum of the heavily obscured AGNs is shown in ...composite X-ray spectrum and the pure ...
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A NuSTAR survey of nearby ultraluminous infrared galaxies
... broadband X-ray spectra, and recover the levels of obscuration and intrinsic X-ray ...) X-rays, especially compared to their bolometric ...
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The exceptional x ray evolution of SN 1996cr in high resolution
... SNe X-ray spectra, where typically one component is associated with the forward shock emission region while the other is related to the reverse shock emission region ...the X-ray ...
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A new, faint population of X ray transients
... The X-ray event is comprised of 115 +12 − 11 net ...The X-ray and multiwavelength properties effectively rule out the vast majority of previously observed high- energy ...‘orphan’ ...
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The symbiotic system AG Draconis: Soft X ray bremsstrahlung from the nebulae
... accompanying the blast wave, absorbs the black body soft X-ray flux from the WD, explains the broad com- ponent of the H and He lines, and leads to low optical-UV–X-ray continuum fluxes. The ...
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The first pre supersoft X ray binary
... studies are known (Greiner 2000). This is due to a combination of the short duration of the SSS phase and because their very soft X-ray emission is easily absorbed by neutral hydrogen in the galactic plane. ...
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Near Infrared Counterparts to Chandra X Ray Sources Toward the Galactic Center I Statistics and a Catalog of Candidates
... the X-ray sources with the smallest positional ...of X-ray sources to the level of accuracy achieved in the central field around Sgr A ∗ , which would eliminate a large number of spurious ...
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Swift monitoring of NGC 5548: X ray reprocessing and short term UV/optical variability
... and X-ray light curves. As 300 of the 465 good X-ray data points lie within the intensively sam- pled period from 6383 to 6547 whose data dominate the measure- ment of short time-scale lags, ...
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Mid Infrared Properties and Color Selection for X Ray Detected Active Galactic Nuclei in the MUSYC Extended Chandra Deep Field South
... the X-ray sources that have been identified as ...61 X-ray sources identified photomet- rically as quasars in the COMBO-17 survey also fall inside this ...all X-ray-selected AGNs ...
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Modificación de superficies de vidrio y nanoparticulas de sílica con complejos carbenos de Fischer : aplicaciones en nanociencia
... Los soportes utilizados fueron en todos los casos, vidrios cubre objeto para microscopios ópticos de 2 x 2 cm conseguidos comercialmente a través de Marienfeld Laboratory GmbH y Co. KG. La limpieza de los ...
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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 (Weisskopf ...
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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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Searching for supergiant fast X ray transients with Swift
... the X-ray properties of the SFXTs since 2007, exploiting the unique observing capabilities of Swift (Gehrels et ...the X-ray Telescope (XRT, Burrows et ...hard X-ray transient ...
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Luminosity functions of LMXBs in different stellar environments
... Although the above picture is attractive in its simplicity, there is a plausible alternative scenario: the entire population of LMXBs in galaxies, including those in the field may have been produced dynamically in GCs ...
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Long term x ray variability of typical active galactic nuclei in the distant universe
... Since most CDF-S sources have low S / N in single observations, we bin data from neighboring observations as one “ epoch ” to enhance the S / N. We have binned the observations so that each epoch consists of observations ...
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THE NuSTAR EXTRAGALACTIC SURVEY: A FIRST SENSITIVE LOOK AT THE HIGH ENERGY COSMIC X RAY BACKGROUND POPULATION
... measured X-ray spectral slope, following a procedure analogous to that used in the Chandra Deep Field surveys ...The X-ray spectral slope is determined from the band ratio, which we define ...
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