CONSTRAINTS ON THE COSMIC-RAYS IN THE SMALL MAGELLANIC CLOUD

被引：68

作者：

SREEKUMAR, P

BERTSCH, DL

DINGUS, BL

FICHTEL, CE

HARTMAN, RC

HUNTER, SD

KANBACH, G

KNIFFEN, DA

LIN, YC

MATTOX, JR

MAYERHASSELWANDER, HA

MICHELSON, PF

VONMONTIGNY, C

NOLAN, PL

PINKAU, K

SCHNEID, EJ

STONE, RG

THOMPSON, DJ

机构：

[1] MAX PLANCK INST EXTRATERRESTR PHYS,W-8046 GARCHING,GERMANY

[2] STANFORD UNIV,HANSEN EXPTL PHYS LAB,STANFORD,CA 94305

[3] GRUMMAN AEROSP CORP,BETHPAGE,NY 11714

[4] HAMPDEN SYDNEY COLL,HAMPDEN SYDNEY,VA 23943

[5] COMP SCI CORP,COMPTON OBSERV SCI SUPPORT CTR,GREENBELT,MD 20771

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.70.127

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Observations of the Small Magellanic Cloud using the Energetic Gamma Ray Experiment Telescope on the Compton Observatory yield an upper limit (95% confidence) for gamma-ray emission > 100 MeV of 0.5x10(-7) photon/cm2s. The expected flux if the cosmic rays are universal rather than galactic in origin is (2.4+/-0.5)x10(-7) photon/cm2s, only a third of which arise from cosmic ray electron interactions. Hence, the bulk of the cosmic ray energy density is almost certainly not metagalactic, and therefore galactic in origin.

引用

页码：127 / 129

页数：3

共 24 条

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