2005A&A...443..477I


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.26CET02:11:42

2005A&A...443..477I - Astronomy and Astrophysics, volume 443, 477-483 (2005/11-4)

Global Galactic distribution of the 1.275 MeV γ-ray line emission.

IYUDIN A.F., BENNETT K., LICHTI G.G., RYAN J. and SCHOENFELDER V.

Abstract (from CDS):

We present results of the analysis of 1.275MeV γ-ray line global distribution derived from the all-sky data accumulated by COMPTEL on board the Compton Gamma Ray Observatory (CGRO) from 1991 to 1997. Previously the 1.275MeV γ-ray line was believed to be largely produced in the decay of radioactive isotope 22Na that is synthesised in the classical nova (CN) thermonuclear runaway (TNR). Another way to produce the 1.275MeV line emission is via the excitation of 22Ne-nuclei, e.g. through the low-energy cosmic ray interactions with the nuclei of the interstellar matter that lead to the production of 22Ne*, or of 22Na. This scenario, as we now believe, can be dominant in contributing to the total 1.275MeV γ-ray line emission from the galactic bulge. Unfortunately, systematic uncertainties in the analysis of the COMPTEL data hinder a clear distinction between two alternative scenarios.

Abstract Copyright:

Journal keyword(s): gamma-rays: observations - Galaxy: abundances - Galaxy: bulge - ISM: abundances - ISM: cosmic rays - reactions nuclear, nucleosynthesis, abundances

Simbad objects: 12

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Number of rows : 12

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME SGP reg 00 51 26.275 -27 07 41.70           ~ 518 0
2 NAME Vela XYZ Rad 08 34.0 -45 50           ~ 1135 2
3 NAME Vela Jr SN SNR 08 52.0 -46 20           ~ 418 2
4 NAME NGP reg 12 51 26.275 +27 07 41.70           ~ 1050 0
5 NAME Loop IV SNR 13 24 -13.6           ~ 53 1
6 NAME Loop I SR? 15 01 -38.7           ~ 336 2
7 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11994 0
8 NAME Cyg Complex reg 20 32 +45.0           ~ 532 0
9 NAME Cas A SNR 23 23 24.000 +58 48 54.00     14.30     ~ 2471 1
10 NAME Local Bubble ISM ~ ~           ~ 718 0
11 NAME Aql Region reg ~ ~           ~ 321 0
12 NAME Galactic Bulge reg ~ ~           ~ 3531 0

    Equat.    Gal    SGal    Ecl

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2021.02.26-02:11:42

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