SS 433 is one of the most exotic objects in space. An eclipsing X-ray binary system , one of the components of which is most likely a black hole or, less likely, a neutron star [4] . The second component is supposedly a star of spectral class A [5] . SS 433 is the first open microquasar [6] .
| SS 433 | |||
|---|---|---|---|
| Star | |||
 Object SS 433 by the artist | |||
| Observational data ( Age J2000.0 ) | |||
| Right ascension | |||
| Declination | |||
| Distance | 18,000 ± 700 St. years (5 500 ± 200 pc ) [1] | ||
| Visible magnitude ( V ) | 13-15.13 m [2] | ||
| Constellation | Eagle | ||
| Specifications | |||
| Spectral class | A7Ib | ||
| |||
| Database Information | |||
| SIMBAD | data | ||
| Sources: [3] [1] | |||
The designation SS 433 comes from the names of the researchers Nicholas Sandyulika and Bruce Stephenson (Bruce Stephenson), compiled in 1977 a catalog of objects with bright emission lines [6] . This object was included in the directory under the number 433.
Content
Location
SS 433 lies inside the remnant of the supernova W50 , which exploded about 10,000 years ago [7] . The first component of the system, a black hole or a neutron star, is the remnant of the collapsed core of a supernova that created the W50 nebula. The approximate distance to SS 433 is 18,000 light years [1] . In the sky is located in the constellation Eagle , the visual magnitude is +14 m [3] , the object also emits in the x-ray and radio range.
System
The substance of a normal companion star flows onto a compact object and forms an accretion disk around it. Spinning, the substance of the disk is very hot and radiates in the x-ray range. Part of the substance leaves the system in the form of two jets (jets) that strike along the axis of rotation of a compact object at a speed of ~ 26% of the speed of light (79,000 km / s) [4] , pp. 23-24; [8] , p. 508 .. The normal star apparently had a smaller mass in comparison with the progenitor of a compact object. System components revolve around a common center of mass in 13.1 days [8] , p. 510 ..
Relativistic electrons are released in jets , which, along with X-ray quanta, ionize iron atoms . During this process, 2 electrons (or 1) remain in the iron atom instead of 26. Thus, the iron atoms are ionized to the states of and hydrogen-like atoms, respectively.
The main emission lines of hydrogen and helium were found in the spectrum of SS 433. Shifts of smaller lines with a period of 163 days were also observed. Such a shift indicates that the substance moves in opposite directions with a speed reaching a quarter of the speed of light. This is precisely the speed of movement of the substance observed in jets departing from the system.
Gal. Longitude 39.6941 °
H. Latitude -2.2446 °
Distance 18,000 St. years old
Notes
- ↑ 1 2 3 Symmetry in the Changing Jets of SS 433 and Its True Distance from Us , Katherine M. Blundell and Michael G. Bowler, Astrophysical Journal 616 , # 2 (December 2004), pp. L159 – L162.
- ↑ VizieR Detailed Page . - SS 433 in the OKPZ catalog. Date of treatment September 21, 2009. Archived April 5, 2012.
- ↑ 1 2 SIMBAD - SS 433 in the SIMBAD database . Date of treatment August 5, 2009.
- ↑ 1 2 Observational Manifestations of Precession of Accretion Disk in the SS 433 Binary System , Anatol Cherepashchuk, Space Science Reviews 102 , # 1 (2002), p. 23-35.
- ↑ Identification of the Mass Donor Star's Spectrum in SS 433 , TC Hillwig, DR Gies, W. Huang, MV McSwain, MA Stark, A. van der Meer, and L. Kaper, Astrophysical Journal 615 , # 1 (November 2004), pp. 422-431.
- ↑ 1 2 SS 433 , David Darling, entry in The Internet Encyclopedia of Science ,
- ↑ Observation of Very High Energy Gamma Rays from SS433 / W50 with CANGAROO-II Telescope , Seiichi Hayashi, Fumiyoshi Kajino and Tsuguya Naito, in The Universe Viewed in Gamma-Rays , proceedings, University of Tokyo Workshop, 2002, ed. R. Enomoto, M. Mori and S. Yanagita, Tokyo: Universal Academy Press, 2003. ISBN 4-946443-75-4 .
- ↑ 1 2 Observations of SS 433 , Bruce Margon, in Annual review of astronomy and astrophysics , volume 22, Palo Alto, CA: Annual Reviews, Inc., 1984, pp. 507-536. DOI 10.1146 / annurev.aa.22.090184.002451.
Literature
- Object SS 433 / Cherepashchuk A.M. // Space Physics: A Small Encyclopedia / Editorial: R. A. Sunyaev (Ch. Ed.) And others - 2nd ed. - M .: Soviet Encyclopedia , 1986. - S. 451-455. - 783 s. - 70,000 copies.
Links
- S.N. Factory. The jets and supercritical accretion disk of object SS433 . astronet.ru (2002). Date of treatment August 4, 2009. Archived April 5, 2012.