... Natalya V. Raguzova and Sergei B. Popov . ... We present a compilative catalogue of Be/X-ray binaries and candidates in the Galaxy and in the Large and Small Magellanic Clouds. This catalogue contains 160 sources and provides information on names and spectral types of optical components, distances, on spin characteristics of neutron stars, and on orbital and X-ray properties of binary systems. ... Be/X-Ray Binaries and candidates in the Galaxy . Galactic sources: comments to the Table 1 . ...

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• Number of accreting X-ray binaries of selected types
• Massive X-ray Binaries
• X-ray Galactic Sources and Binary Radiopulsars as Probes of the Initial Mass

... XRB SEDs | ... This site provides spectral energy distributions (SEDs) of X-ray binaries from optical to X-ray energy range as a function of binary type (BH, NS, HMXB, LMXB), orbital phase, superorbital phase, and aperiodic X-ray spectral states. ... X-ray binaries (XRBs) owe their prominence to one of the most efficient energy release mechanisms known: accretion onto a compact object. ... What are X-ray Binaries? A brief definition of X-ray Binaries . ... Comparing SEDs by binary type . ...

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• What are X-Ray Binaries? Observatories
• The AstroStat Slog X-ray Binaries
• Black Hole X-ray Binaries with Massive Companions

Next: Evolution in massive binaries Up: Binary Neutron Stars Previous: Binary companions and their . X-rays result from accretion phenomena in general . Many black hole candidates in contrast to radio pulsars . Again classified on the basis on companion mass . Most high mass systems are X-rays pulsars . Only 3 low mass systems are X-ray pulsars! ... Many evolutionary links to radio pulsars . few seconds < P < few hundred seconds . ...

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• Detection of X-ray Emission from the PSR 1259-63/SS2883 Binary System
• Luminosity dependent changes of pulse profiles in the X-ray binary GX 1+4
• Programme - Abstract

... The Galactic low-mass X-ray binary GS 2023+338 was discovered during the burst on May 22, 1989 with the Japanise satellite Ginga (aka Galaxy). The flux reached 17 crabs (this unit of flux measurement is an bright X-ray source, Crab Nebula) at 10-35 keV. ... No other radio telescope worldwide carried out multi-frequency measurements. ... Upon 14 days the radio flux fell below the detection level at the RATAN-600 in relation to the decrease of the X-ray flux. ...

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• X-rays binary Cyg X-3

... The close X-ray binary with relativisic jest, contained probably a black hole, Cygnus X-3 has been detected in first time in Gamma-rays at enegries higher 100 МeV (AGILE, Tavani et al., ... The bright radio flares from Cygnus X-3, caused by the massive ejections of matter with velocity close to speed of light accur in the certain ''huper-sort'' X-ray states (RXTE PCA), that was in the first time determined in the studies of HID -- ''hardness-intensity diagram'' [Fig.4]. ...

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• X-ray binaries with relativistic jets -- GRS 1915+105
• X-ray binaries with relativistic jets -- LSI +61o303
• X-ray binaries with relativistic jets -- microquasars

... X-ray Moon and X-ray Star . ... 27.02.1996 . ... Credit: ROSAT , MPE , NASA Explanation: An X-ray star winks out behind the Moon in these before and after views of a lunar occultation of the galactic X-ray source designated GX5-1 . The false color images were made using data from the ROSAT orbiting observatory and show high energy X-rays in yellow (mostly from GX5-1), and lower energy X-rays in red (the Moon reflecting X-rays from the Sun ). ... Publications with keywords: Moon - X-ray . ...

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• Binary Black Hole in 3C 75
• Астронет > Binary Black Hole in 3C 75
• X-Rays From Sirius B

... Seminar archive . ... The structure of the X-ray sources in the hard spectral state of accreting black-hole binaries has been a subject of intense debate. The paradigm dominant for many years postulated that the accretion disc in the hard state is truncated at some radius >> the innermost stable orbit (ISCO) whereas the disc reaches the ISCO in the soft state. ... On the other hand, there have been numerous claims in recent years that the disc extends to the ISCO in the hard state. ...

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... 2010 March 14 . Binary Black Hole in 3C 75 . ... At the cores of two merging galaxies in the Abell 400 galaxy cluster they are some 300 million light-years away. Astronomers conclude that these two supermassive black holes are bound together by gravity in a binary system in part because the jets' consistent swept back appearance is most likely due to their common motion as they speed through the hot cluster gas at 1200 kilometers per second . ... About APOD | ...

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• APOD: 2006 April 12 - Binary Black Hole in 3C 75
• APOD: 2000 October 6 - X-Rays From Sirius B
• APOD: 2001 May 24 - X-Ray Stars of 47 Tucanae

... Abubekerov M.K., Lipunov V.M. "The Lower Temperature Limits Of Accretors" Astronomy Reports, 2003, Vol. 47, Issue 8, pp.679-684. ... Abubekerov M.K., Antokhina E.A., Cherepashchuk A.M. "The Masses of X-ray Pulsars in Binary systems with OB Supergiants" Astronomy Reports, 2004, Vol. ... Abubekerov M.K., Antokhina E.A., Cherepashchuk A.M., Shimanskii V.V. "The Mass of the Compact Object in the Low-Mass X-ray Binary 2S 0921-630" Astronomy Reports Astronomy Reports, 2006, Vol.50, Issue 7, pp.544-552. ...

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... For the past years I have been working on the problem of synthesis of light curves of close binary systems, consisting of a normal star and a compact object (point object with fixed X-ray luminosity). ... Possible existence of a bright spot on the disk's lateral surface is taken into account. ... The last of then will be published in Gordon and Breach Publishers ( Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ... Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ...

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• Elena Seifina
• Igor Antokhin
• Elena Seifina. Publications

. The XMM-Newton website has moved to the following location: . http://www.cosmos.esa.int/web/xmm-newton

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• Parameters
• SciSim v2.1 development
• Contrasting optical and X-ray applications

M. ( / DIAS, Ireland), A. (ISDC, Switzerland) 1 - Key Question Only 3 binary systems regularly observed in TeV: PSR B1259-63 (young pulsar +Be star, P=3.4 y) LSI +61 303 (comp. source + Be star, P=26.42 d) LS 5039 (comp. source + O star, P=3.9 d) Origin of the high-energy emission? ... 2006; Neronov &Chernyakova 2007 4 3.4 years orbital period. e~0.87 Correlated variability with a sharp rise ( "two bumps structure" ) is seen in radio, X-ray (and TeV?) bands. ...

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• Second Spectrum-RG/eROSITA Conference
• z90-program
• Титарчук Лев Григорьевич (NRL)

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... The X-ray spectrum of KL Dra observed during the faint optical state. The best-fit model using an absorbed single temperature thermal model with metalicity appropriate for CNO processed material is shown as a solid line. ... KL Dra is a helium accreting AM CVn binary system with an orbital period close to 25 mins. Approximately every 60 days there is a 4 mag optical outburst lasting тИ®10 days. ...

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• Doppler Imaging and Flare Activity on HR1099
• Research Highlights
• Homepage of Gavin Ramsay

HUBBLE SPACE TELESCOPE DAILY REPORT #1432 PERIOD COVERED: 0000Z (UTC) 07/13/95 - 0000Z (UTC) 07/14/95 Daily Status Report as of 195/0000Z 1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED: 1.1 Completed WF/PC-2 6135 (Uncovering Misidentifications of Bright Galactic X-Ray Binaries) The WF/PC-2 was used to make observations of the suspected X-Ray binary star CAL-87. ... The internal lamp is also used as a source for the preflash test. The observation was executed as scheduled, and no anomalies were noted. ...

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• http://www.stsci.edu/ftp/observing/status_reports/old_reports_93/hst_status_10_05_93
• http://www.stsci.edu/institute/conference/may_symp/supportingFiles/talk28
• STScI Preprint #1261

... Gilfanov, M. and Merloni, A. Observational Appearance of Black Holes in X-Ray Binaries and AGN . ... Accretion onto black holes powers most luminous compact sources in the Universe. ... Accretion onto supermassive black holes in AGN and stellar- and (possibly) intermediate mass black holes in X-ray binaries and ultra-luminous X-ray sources in star-forming galaxies can explain most, if not all, of the observed brightness of the cosmic X-ray background radiation. ...

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• http://www.iki.rssi.ru/comp/2014/gilfanov2_annotation.htm
• http://www.iki.rssi.ru/comp/2013/gilfanov1_annotation.htm
• X-ray photometer RF

The Ryle Telescope was used for some years for monitoring variable sources (in addition to its role in source-surveys related to the Sunyaev-Zeldovitch studies). The instrument is now transformed into the "AMI large array": see the AMI pages for details. ... The rebuild took place between 2006 June and mid-2008; between these dates there is no useful data available. ... For some sources there are many plots, organised by date: . ...

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• An expanding plasmon model for the radio outbursts of Cir X-1
• Astrophysics Group members - G Pooley
• G320.4-1.2

In accreting binary neutron star systems matter is channelled by the strong magnetic field to the poles of the neutron star. The accreted matter accumulates at the poles to form accretion mounds. Pressure from the confined matter can significantly distort the local magnetic field structure, affecting the X-ray observations and long term evolution of the magnetic field. ...

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New Opportunities 2010 and Beyond: The High-Energy/Radio Connection High Energy Missions Timeline XMM, Suzaku.. ... Hard X-ray Sky EXIST Wide-Field Hard X-ray Imaging: EXIST ·~20X more sensitive than Swift or INTEGRAL and cover full sky ·Detect ~104 sources, 10 positions, 3-600 keV spectra ·unique temporal survey: full sky imaging each orbit High Energy Telescope HET (10-600keV) (6 x 3 coded aperture telescopes; 131o x 65o FoV) Low Energy Telescope LET (3-30 ...

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• http://www.naic.edu/vscience/schedule/tpfiles/ArzoumaniantagP2066tp.pdf
• http://www.naic.edu/vscience/schedule/tpfiles/vantagP2534tp.pdf
• http://www.naic.edu/vscience/schedule/tpfiles/ArchibaldtagP2456tp.pdf

. A new Chandra image of M51 contains nearly a million seconds of observing time. The data reveal hundreds of point-like X-ray sources within what is nicknamed the "Whirlpool Galaxy." Most of these point sources are X-ray binary systems with either a neutron star or black hole orbiting a Sun-like star. The composite image consists of X-rays from Chandra (purple) and optical data from Hubble (red, green, and blue). X-ray: NASA/CXC/Wesleyan Univ./R.Kilgard, et al; Optical: NASA/STScI

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• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B3A19D320-B261-4B0E-B78A-AE3132E9BD3F%7D
• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B53F4B938-B21C-4B0B-B9A3-52F8EEF65294%7D
• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B8A946391-3566-421A-8A3D-95269CD45FD4%7D

... The Einstein On-Line Service (EOLS) is a simple menu-driven system which provides an intuitive method of querying over one hundred database catalogs. In addition, the EOLS contains over 30 CD-ROMs of images from the Einstein X-ray Observatory which are available for downloading. The EOLS provides all of our databases to the NASA Astrophysics Data System (ADS) and our documents which describe each table are written in the ADS format. ... The EOLS provides three options for data retrieval. ...

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• ADASS 2000 Conference Proceedings
• A Method for Visualizing Time Variability in X-Ray Images
• An Object Oriented Design for Monitoring the Chandra Science Instrument X-ray