Next: Discussion Up: No Title Previous: Parameters of binary compact . Under the assumptions made above, we can calculate the binary merging rates in the Galaxy R . ... Figure: The dependence of different compact binary merging rates in a model ``elliptical'' galaxy (where all the stars were formed simultaneously at the moment t =0) with mass M . The horizontal line shows the mean merging rate of binary NS in a spiral galaxy of the same mass with a stationary star formation. ...

... 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. ...

Detection of binaries . ... Intermediate dispersion spectroscopy of a sample of 40 hot subdwarf B stars between 5500 and 9000A has been obtained. ... Seven targets show strong lines due to the infrared Ca II triplet, the unequivocal signature of a cool companion. ... The detection procedure indicates an improved and more secure method for the measurement of the binary frequency of hot subdwarfs. ... Calcium triplet detections. ... Triangles represent sdB stars which show the Ca II triplet (CaT). ...

Detection of X-ray Emission from the PSR 1259-63/SS2883 Binary System . ... Abstract Non-pulsed but variable X-ray emission has been detected from the binary system containing the radio pulsar PSR 1259-63 during two pointed ROSAT observations, taken five months apart. This 47.7 ms radio pulsar is in a highly eccentric (e~0.85) binary system with the 10-15 Msun Be-star SS2883. ... The system may be the progenitor of the more slowly rotating Be X-ray binary pulsar systems. simonj@physics.usyd.edu.au ...

Over the last year, the greatest development in pulsar research at the Arecibo Observatory has been the start of the main ALFA pulsar survey. ... A great example of the new, compact binary systems that ALFA can find is PSR J1906+0746. This is a 144-ms pulsar in a binary system with an orbital period just under 4 hours and a massive companion. ... One particularity of this system is that it is about 1000 times younger than the double pulsar , i.e., it is by far the youngest binary system known. ...

... Recent Topics . ... Forum . MAO main . ... Article to gravitational wave detection by LIGO . ... first direct observation of gravitational waves . ... Main Astronomical Observatory . ... MAO/NASU, 27 Akademika Zabolotnoho St. 03680 Kyiv, Ukraine . ... www.mao.kiev.ua/images/postbyemail/Abott...vLett.116.061102.pdf . ... Board Categories MAO main - Info - MAO - news - Flame Technical - Technical Support(Forum)(Техподдержка(Форум)) . ... Powered by Kunena Forum . ...

... Left: Black hole systems with high mass companions in blue, black hole systems with low mass companions in green, X-ray pulsars in red, and non-pulsing neutron star systems in Magenta. ... Left: Black hole systems with low-mass companions in green; black hole systems with high-mass companions in blue. Right: Persistent black hole systems in blue; transient black hole systems in green. ... Bhaskar Balaji Unionville High School Summer 2012 . Robert Sylvia Medfield High School Summer 2011 . ...

... Authors: Rex A. Saffer 1 2 , Mario Livio 1 , Lev R. Yungelson 3 We describe radial velocity observations of a large sample of apparently single white dwarfs (WDs), obtained in a long-term effort to discover close, double-degenerate (DD) pairs which might comprise viable Type Ia Supernova (SN Ia) progenitors. ... Our observations are in general agreement with the predictions of the theory of binary star evolution. ... huizinga@stsci.edu . ...

From Paul S. Ray . Discovery of Periodic Phase Modulation in LSI +61 303 Radio Outbursts by P. C. Gregory, M. Peracaula, and A. R. Taylor, ApJ, in press (1999) . Bayesian Periodic Signal Detection: Analysis of 20 Years of Radio Flux Measurements of the X-ray Binary LSI +61 303 by P. C. Gregory, ApJ, in press (1999) . ... The ASCA X-ray Spectrum of the Unusual Binary LSI +61 303 ( 195k .ps ), D. Leahy, F. Harrison, and A. Yoshida, ApJ , 475 , 823 (1997). ...

... This file is used by QLA and the SAS. ... PhotToNat contains three tables, viz. PHOTTONAT COINCIDENCE and DEGRADATION . The PHOTTONAT table contains coefficients used to calculate the MIC CCD framerate for a given detector configuration (stored in the binary field PARAM00). ... The format of the binary table in the PHOTTONAT extension follows the description of the CCF ICD [ 5 ]. ... The table COINCIDENCE holds the coefficients used to parameterize the empirical coincidence loss curve. ...

After being first recognised as a distinct category of Gamma-Ray Bursts (GRBs), the progenitors of short GRBs have remained highly elusive although we have long suspected that they are compact binary mergers. ... The compact binary merger progenitor is typically thought to produce a black hole central engine. However, we have now identified prolonged energy injection in short GRB lightcurves that is inconsistent with the expected black hole central engine. ...

... Class . ... METHOD . ... java.lang.Object ij.plugin.filter.Binary . ... Binary () . ... This method is called by ImageJ to inform the plugin-filter about the passes to its run method. int . ... This method is called after setup(arg, imp) unless the DONE flag has been set. ... The method should return a combination (bitwise OR) of the flags specified in interfaces PlugInFilter and ExtendedPlugInFilter . ... This method is called by ImageJ to inform the plugin-filter about the passes to its run method...

... Radiation and detection of scalar gravitation waves are considered in: . Yu.Baryshev, "Signal From SN 1987a in Amaldi-Weber Antennas as the Possible Detection of Scalar Gravitational Waves", Astrophysics, Vol.40, No.3, 1997, pp. 244 - 251. Yu.Baryshev "On a Possibility of Scalar Gravitational Wave Detection frrom the Binary Pulsar PSR 1913 + 16" gr-qc/9911081 . K.S.Thorne "Probing Black Holes and Relativistic Stars with Gravitational Waves" gr-qc/9706079 . ...

... Киевский клуб любителей астрономии "Астрополис" > . ... Запорожский клуб АЛЬТАИР > . Download:: Catalogues for Cartes du Ciel, каталоги для Cartes du Ciel . ... Cartes du Ciel - Sky Charts . ... Не долго думая, открыл на ресурсе http://ua.fm почтовый ящик cdc@ua.fm на который буду пересылать небольшие каталоги для Cartes du Ciel , с целью их последующего скачивания всеми желающими . ... Вот какую общую информацию выдает данный каталог в Cartes du Ciel на примере звезды Каф (бета Кассиопеи): . ...

... IRAS Source . N: No IRAS source. Y: Iras source. IRAS detection hole, see Weintraub 1990. O: Offset between optical- and IRAS-source, see sect. 3.3. and Table 2. ... Bin: Binary . ... Neb: Nebula . ... Ref Neb: Reflection Nebula . ... HP(I): High (Intrinsic) Pol, 1-3 % . N PN: No Planetary Nebula . ... VHP(I): Very High (Intrinsic) Pol, > 3% . ... Sc: Source . Ecl Bin: Eclipsing Binary . LP(I): Low (Intrinsic) Pol, < 1% . Pol: Polarization . ... Abbreviations | ...

... Editor's choices for the most educational Astronomy Pictures of the Day about binary stars: . APOD: 1999 December 19 – Accretion Disk Binary System . Explanation: Our Sun is unusual in that it is alone - most stars occur in multiple or binary systems . In a binary system, the higher mass star will evolve faster and will eventually become a compact object - either a white dwarf star, a neutron star , or black hole . ... APOD: 2003 November 10 – An Intermediate Polar Binary System . ...

... Phase light curves of binary model that consists of a primary component with mass M 1 and a secondary component with mass M 2 . ... The input parameters of the problem are the accretion rate onto the binary components ( ), the component mass ratio q = M 2 /M 1 , the orbital inclination to the line of sight , the eccentricity e, the rotation angle of the apsidal line relative to the observer , and the parameter c characterizing viscosity. ...

... Next: Object Detection Using Up: Object Detection and Previous: Automated Classification of . ... A status report of the The GSC Object Classifier (GOC) project is presented. ... The GSC contains multiple entries for some objects due to plate overlap. It classifies objects as stars, non-stars, galaxies, blends and potential artifacts; the latter three classifications are rare, and only exist in GSC version 1.1, to which they were added manually. ... star, . ... non-star, . ...

... In a binary star system , each star of the pair follows an elliptical orbital path. ... In developing a new optical interferometer capable of extremely high resolution while peering through the Earth's blurry atmosphere, U.S. Naval Observatory and Naval Research Lab astronomers have been able to detect the companion star to Mizar A. This composite image of their observations shows the daily and monthly relative orbital motion in the binary system. ... Publications with keywords: binary star . ...

Общая Астрономическая Конференция > Товары для астрономов > Полезное для астрономии . Cartes du Ciel . ... Поиск . Сообщения за день . ... Гость . Сообщений: n/a . ... Сообщений: 1,586 . ... Созвездия (поиск и описание) .. Созвездия южного неба (поиск и описание) .. Осенние созвездия (поиск и описание) .. Летние созвездия (поиск и описание) .. Околополюсные созвездия (поиск и описание) .. Весенние созвездия (поиск и описание).. Зимние созвездия (поиск и описание) .. ...