3 edition of The broad-band x-ray spectrum of a QSO sample found in the catalog.
The broad-band x-ray spectrum of a QSO sample
Diana M. Worrall
by National Aeronautics and Space Administration, Goddard Space Flight Center in Greenbelt, Md
Written in English
|Statement||D.M. Worrall, F.E. Marshall.|
|Series||NASA technical memorandum -- 85071.|
|Contributions||Goddard Space Flight Center.|
|The Physical Object|
the broad-band noise characteristics of selected cataclysmic variables (cvs), anomalous x-ray pulsars (axps) and soft gamma repeaters (sgrs) a thesis submitted to the graduate school of natural and applied sciences of middle east technical university by. The best fit model (red. chi^2= for 79 dof) to the broad band spectrum consists of an absorbed powerlaw with an high energy cut-off and a reflection component. Note that to limit the number of free parameters, and since these were poorly constrained otherwise, the cut off and folding energies were frozen to the value obtained from to fit.
UNESCO – EOLSS SAMPLE CHAPTERS ASTRONOMY AND ASTROPHYSICS - Active Galactic Nuclei - Suzy Collin, Bożena Czerny ©Encyclopedia of Life Support Systems (EOLSS) hole (at a few gravitational radii), and that the disk extends also quite close. The most promising TeV-peaked candidates, therefore, should be those with the largest X-ray to GeV flux ratio, i.e. with the highest broad-band index α xγ. In the following sections, this criterium is applied to a large sample of BL Lacs, and further refined with information from the Wide-field Infrared Survey Explorer (WISE, Wright et al Cited by: 1.
The scientific and operational aims of the Czech-made Hard X-Ray Spectrometer (HXRS) launched onboard the U.S. Department of Energy Multispectral Thermal Imager satellite (MTI), on 12 March are discussed. The principal operating characteristics of the instrument such as the temporal resolution, energy band selection, spectral sensitivity, and the Cited by: You can write a book review and share your experiences. Other readers will always be interested in your opinion of the books you've read. Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them.
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The broad-band x-ray spectrum of a QSO sample. [Diana M Worrall; Goddard Space Flight Center.] Home. WorldCat Home About WorldCat Help. Search. Search for Library Items Search for Lists Search for Contacts Search for a Library.
Create Book. Broad-band X-ray spectrum of RE +14 (LECS/MECS/PDS). The line is the best fit model described in the text. erally do not have visible soft X-ray components, which could be consistent with the idea that high field magnetic accreting white dwarfs tend to sup- Author: T Belloni, Giorgio Matt, D De Martino, L Chiappetti, F Giovannelli, F Haberl, J Osborne, K Mukai, S.
The Broad Band X-ray Telescope (BBXRT) was flown on the Space Shuttle Columbia on December 2-Decem as part of the ASTRO-1 flight of BBXRT marked the first opportunity for performing X-ray observations over a broad energy range ( keV) with a moderate energy resolution (typically 90 eV and eV at 1 and 6 keV, respectively).
of the spectral and timing properties of high-mass X-ray binaries. In Chapter 2 I describe the operation of the types of non-dispersive X-ray spectrometers used in this work. The X-ray observatories that were used to perform the observa tions are described in Chapter 3, and in Chapter 4 I give an overview of the.
Broad-band spectra of accreting X-ray binary pulsars can be fitted by a phenomenological model composed of a power law with a high energy rollover above 10 keV, plus a Author: Mauro Orlandini. The Supergiant Fast X-ray Transient (SFXT) SAX J− underwent an outburst on May 6 and was observed with Swift.
We report on these observations which, for the ﬁrst time, allow us to study the broad-band spectrum from soft to hard X-rays of this source. No X-ray spectral information was available on this source before the Swift. Results: Both the optical spectrum and the broad band spectral energy distribution of Sharov 21 are shown to be very similar to that of normal, radio-quiet type 1 quasars.
QSO + is a Quasi-Stellar Object (QSO) The broad-band spectrum of this DA white dwarf can be explained as emission from a homogeneous, In this sample of images frombright X-ray arcs of low energy ( – 10 keV) are generated during auroral activity. The images are superimposed on a simulated image of Earth.
A new model for the broadband emission of a sample of Xray emitting GPS galaxies L. Ostorero1,2, Ł. Stawarz3,4, R. Moderski5, I. Kowalska5, J.
Kataoka6, M. Broad-band Soft X-ray Polarimetry Herman L. Marshall a, Ralf K. Heilmann a, Norbert S. Schulz a, and Kendrah D.
Murphy a a MIT Kavli Institute, Cambridge, MA, USA ABSTRACT We developed an instrument design capable of measuring. Retrieved abstracts, starting with number Total number selected: From an observational point of view, the phenomenological model able to describe the broad-band spectra of accreting XBPs contains (i) a black-body component with temperature of a few hundred eV; (ii) a power law of photon index ∼1 up to ∼10 keV; and a (iii) a high energy (≳10 keV) cutoff that makes the spectrum rapidly drop above ∼40–50 keV (see, e.g., Orlandini and Cited by: 6.
In this paper we report on the broad-band spectral properties of all type 2 AGN included in the hard X-ray-selected AGN complete sample as defined by Malizia et al.
This paper is the continuation of the work we presented for a smaller sample of seven hard X-ray-selected type 2 AGN (De Rosa et al. ).Cited by: We here present the analysis of simultaneous X-ray and opti-cal data of seven recently identiﬁed candidates, to unambiguously conﬁrm them as magnetics through the search for X-ray pulsations and the study of their broad-band spectral properties.
Our source sample consists of SwiftJ+, SwiftJ We present here a spectral study of a sample of LMXBs containing NS, both in a broad band X-ray range with INTEGRAL and RXTE, and with high energy resolution using the HETG on board of Chandra. In particular we show in x 3 the presence of hard X-ray emission in Sco X-1, which does not require a.
a number of type-I X-ray bursts were found with the Rossi X-ray Timing Explorer (RXTE), which presented a blackbody emission of a few keV temperatures evolving during the thermonuclear ﬂashes produced on the NS surface (Galloway et al.
In this work, we investigate the broad-band spectral proper. XMM Conference Publications X-ray spectroscopy of massive stellar winds: previous and ongoing observations of the hot star zeta Pup An X-ray Outflow in an Obscured QSO at z= in the CDF-S The broad-band X-ray spectrum First Author: Middei, R.
The X-ray UniverseProceedings of the conference held June, in Rome, Italy. A re-analysis of the NuSTAR and XMM-Newton broad-band spectrum of Ser X-1 M. Matranga1, T. Di Salvo1, R.
Iaria1, A. Gambino1, L. Burderi2, A. Riggio2, and A. Sanna2 1 Universitá degli Studi di Palermo, Dipartimento di Fisica e Chimica, via Archiraﬁ 36, Palermo, Italy e-mail:[email protected] X-ray Spectra of over sources will be obtained in the energy range to 12 keV, with energy resolution of ~ eV FWHM and timing resolution of 64 μs.
BBXRT’s large throughput, broad band mirrors, coupled to segmented cooled Si(Li) detectors, give us the first opportunity to study in detail X-ray spectral features, from oxygen to the Cited by: 1. First hard X-ray detection and broad band X-ray study of the unidentified transient AX J+ Sguera, V., Sidoli, L., Paizis, A., Masetti, N., Bird, A.J.
and Bazzano, A. () First hard X-ray detection and broad band X-ray study of the unidentified transient AX J+ Monthly Notices of Cited by: 1. X-ray and UV observations of the Warm-Hot IGM, NovemberA colloquium presented at the University of Texas at Austin.
X-ray/FUV Absorption Line Spectroscopy of Warm-hot Gas around the Galaxy, Juneat the AAS meeting in Calgary, Canada X-ray and UV observations of the Warm-Hot IGM, FebruaryA colloquium pre.A likely explanation for the X-ray spectra of γ-ray-emitting NLSy1 is that the underlying Seyfert emission, originating from the corona and accretion disc, has a noticeable contribution at low energies, the so-called soft X-ray excess.
The origin of the soft X-ray excess is still an open issue both in radio-quiet and radio-loud AGN (e.g.,).Cited by: 1.Abstract: We present new results on X-ray properties of radio loud broad absorption line (BAL) quasars and focus on broad-band spectral properties of a high ionization BAL (HiBAL) compact steep spectrum (CSS) radio-loud quasar + This HiBAL quasar has a very complex radio morphology indicating either strong interactions between a radio jet and the surrounding Cited by: 9.