Search for a galactic 1275 KeV line emission with SPI/INTEGRAL

被引：0
|
作者：
Jean, P [1 ]
Knödlseder, J [1 ]
Hernanz, M [1 ]
Cisana, E [1 ]
Valsesia, M [1 ]
von Kienlin, A [1 ]
Leleux, P [1 ]
Strong, A [1 ]
Winkler, C [1 ]
Wunderer, C [1 ]
机构：
[1] CNRS, UPS, CESR, Toulouse, France
来源：
PROCEEDINGS OF THE 5TH INTEGRAL WORKSHOP ON THE INTEGRAL UNIVERSE | 2004年 / 552卷
关键词：
gamma-ray astronomy; nuclear astrophysics; gamma-ray spectroscopy; novae;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The 1275 keV line is emitted by radioactive Na-22 nuclei which are supposed to be ejected in the interstellar medium by ONe type novae. A "diffuse" 1275 keV line emission, induced by the cumulative contribution of ONe novae, is expected from the Galactic center region. So far, this emission has not, been detected by gamma-ray telescopes. In 2003, the central region of our Galaxy has been observed by INTEGRA L during the, Galactic Center Deep Exposure. We analysed the, SPI data in order to search for the Galactic 1275 keV line emission and derive upper limits to the Na-22 mass produced per outburst ranging from 2.5 to 5.7 x 10(-7) M-circle dot depending on the rate and spatial distribution of novae.
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页码：119 / 122
页数：4
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