1994A&A...287..782Z

Query : 1994A&A...287..782Z

1994A&A...287..782Z - Astronomy and Astrophysics, volume 287782-788 (1994/7-3)

VLA data constraints on the Galactic-Centre annihilation line source 1E1740.7-2942.

ZHELEZNYAKOV V.V. and BELYANIN A.A.

Abstract (from CDS):

Recent VLA observations of the annihilation line source 1E1740.7-2942 impose rather tight restrictions on the parameters of the emitting region. We show that the results of radio and hard X-ray observations are consistent with a model in which electron-positron pairs, created in the vicinity of a black hole, become trapped in the magnetosphere supported by an accretion disk. The trapped relativistic pairs emit the observed synchrotron radiation, are cooled and then positrons annihilate in the dense external regions of the accretion disk, producing a narrow 511keV line. We also formulate some model-independent constraints on the magnetospheric parameters stemming from radio observations.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: centre - gamma-rays: theory - black hole physics - radiation mechanisms: non-thermal - stars - individual: 1E 1740.7-2942

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 2E 3938 HXB 17 43 54.7 -29 44 44           ~ 693 1

Query : 1994A&A...287..782Z

Basic data :
2E 3938 -- High Mass X-ray Binary
Other object types: otypes_help 		X (2022MNRAS,2E,...), HXB (2012ApJ), LXB (2013ApJS), gam (INTEGRAL1,INTREF), HX? (2016ApJS), BH? (2007ApJS), IR (IRAS)
ICRS coord. (ep=J2000) : 		17 43 54.7 -29 44 44 (X-ray) [ 5000 5000 90 ] D 2022A&A...661A..38P
FK4 coord. (ep=B1950 eq=1950) : 		17 40 42.9 -29 43 27 [ 5000 5000 90 ]
Gal coord. (ep=J2000) : 		359.1154 -00.1056 [ 5000 5000 90 ]
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Identifiers (23) :
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2E 3938 INTEGRAL1 64 SWIFT J174354.8-294441 3XMM J174354.7-294443
AX J1743.9-2945 INTREF 816 SWIFT J1743.9-2944 4XMM J174354.8-294443
2CXO J174354.8-294443 IRAS 17408-2942 SWIFT J1743.7-2946 [HPG94] 1
1E 1740.7-2942 NAME Great Annihilator 2SXPS J174354.8-294444 [KRL2007b] 265
1E 1740.7-2943 PBC J1744.0-2942 1WGA J1743.9-2944 [SKM2002] 23
2E 1740.7-2943 SRGA J174354.7-294444 2XMM J174354.8-294442

References (693 between 1850 and 2026) (Total 693)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Distance : 1    Var : 1   

   

Observing logs
ISO : 11    XMM : 3   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : 2E 3938

Link by name to the catalogue in VizieR :

2E 3938 IRAS 17408-2942

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