Can we observe nuclear gamma-ray lines from accreting objects with integral?

Authors
Bykov, AM Bloemen, H Ivanchik, AV Konstantinov, AN Krassilchtchikov, AM Lazarev, VY
Citation
Am. Bykov et al., Can we observe nuclear gamma-ray lines from accreting objects with integral?, ASTROPHYS L, 38(1-6), 1999, pp. 285-288
Citations number
21
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL LETTERS & COMMUNICATIONS
ISSN journal
08886512 → ACNP
Volume
38
Issue
1-6
Year of publication
1999
Pages
285 - 288
Database
ISI
SICI code
0888-6512(1999)38:1-6<285:CWONGL>2.0.ZU;2-T
Abstract
Modelling results for the study of the efficiency of gamma-ray line emissio n from magnetized accreting neutron stars are discussed. It is shown that c ollisionless stopping of accreting matter can occur after the magnetized fl ow has traversed a column density of similar to 10(24) cm(-2) in the accret ion column in a transient regime. This provides a possibility for conversio n of the accreting power into gamma-ray line emission with an efficiency up to a percent. Transient gamma-ray line emission of bright accreting source s may be detectable by INTEGRAL for distances up to a few kpc.