Models for COMPTEL 26Al data

被引：0

作者：

Diehl, R ^{[1
]}

Oberlack, U ^{[1
]}

Knodlseder, J ^{[1
]}

Bloemen, H ^{[1
]}

Hermsen, W ^{[1
]}

Morris, D ^{[1
]}

Ryan, J ^{[1
]}

Schonfelder, V ^{[1
]}

Strong, A ^{[1
]}

von Ballmoos, P ^{[1
]}

Winkler, C ^{[1
]}

机构：

[1] Max Planck Inst Extraterr Phys, D-85740 Garching, Germany

来源：

PROCEEDINGS OF THE FOURTH COMPTON SYMPOSIUM, PTS 1 AND 2: PT 1: THE COMPTON OBSERVATORY IN REVIEW; PT 2: PAPERS AND PRESENTATIONS | 1997年 / 410期

关键词：

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The all-sky data from CGRO Phases 1-5 provide the most detailed constraints to date on the Al-26 distribution in the Galaxy. With improved modelling of the instrumental background, different source distribution models can be distinguished. We derive large-scale parameters from first-order models, i.e., a characteristic scale height of 130 pc, and a Galactocentric scale radius of 5 kpc. Spiral structure of the Al-26 source distribution improves the fits, as molecular gas provides a better description than geometrical models in the inner Galaxy, We note that infrared emission from dust also matches the Al-26 emission quite well. Hints for contributions from more local and localized Al-26 components such as Loop I and the Gould Belt are compatible with a massive star origin of Al-26.

引用

页码：1114 / 1118

页数：5

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