Annihilation and backscattered lines in the Galactic center region

Abstract

view Abstract Citations (2) References (31) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Annihilation and Backscattered Lines in the Galactic Center Region Durouchoux, Ph. ; Wallyn, P. ; Chapuis, C. Abstract We review the recent observations of the X-ray and gamma-ray sources in the Galactic center region, emphasizing the features which have been detected in their spectra. Most are related to the annihilation of positrons, and therefore this discussion concentrates on pair plasma creation, positron transport, and annihilation. For a relatively complete picture of the Galactic center region and the 1E 1740.7-2942 source, we need to introduce compact object(s), some of them possibly black holes. Clues for black hole detection are presented (dynamical arguments, spectral properties, quasi-periodic oscillations, and temporal behavior), as well as an updated list of candidates. We finally show how the International Gamma-Ray Astrophysics Laboratory (INTEGRAL) would be a powerful tool for detecting black holes at gamma-ray energies. Publication: The Astrophysical Journal Supplement Series Pub Date: June 1994 DOI: 10.1086/191986 Bibcode: 1994ApJS...92..405D Keywords: Backscattering; Black Holes (Astronomy); Galactic Nuclei; Gamma Ray Astronomy; Positron Annihilation; Stellar Radiation; Milky Way Galaxy; Periodic Variations; Positrons; Stellar Mass Accretion; X Ray Sources; Astronomy; GALAXY: CENTER; BLACK HOLE PHYSICS; GAMMA RAYS: OBSERVATIONS full text sources ADS | data products SIMBAD (15)