0125125 - ASU-R 20030031 RIV FR eng J - Journal Article
Šimon, Vojtěch
Long-term X-ray activity of the ultra-compact binary 4U 1820-30.
Astronomy & Astrophysics. Roč. 405, č. 1 (2003), s. 199-206. ISSN 0004-6361. E-ISSN 1432-0746
R&D Projects: GA ČR GA205/00/P013
Institutional research plan: CEZ:AV0Z1003909
Keywords : star binaries * circumstellar matter * neutron
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics
Impact factor: 3.843, year: 2003

An analysis of the long-term X-ray activity of the ultra-compact binary 4U 1820-30 within the years 1996-2002 is presented. Episodes of brief low states (BLS), lasting for several days, are superposed on the general course of the 172.780 day cycle.
Permanent Link: http://hdl.handle.net/11104/0023383