Evidence for TeV gamma-ray emission from a region of the galactic plane

被引：77

作者：

Atkins, R

Benbow, W

Berley, D

Blaufuss, E

Coyne, DG

DeYoung, T

Dingus, BL

Dorfan, DE

Ellsworth, RW

Fleysher, L

Fleysher, R

Gisler, G

Gonzalez, MM

Goodman, JA

Haines, TJ

Hays, E

Hoffman, CM

Kelley, LA

Lansdell, CP

Linnemann, JT

McEnery, JE

Miller, RS

Mincer, AI

Morales, MF

Nemethy, P

Noyes, D

Ryan, JM

Samuelson, FW

Parkinson, PMS

Shoup, A

Sinnis, G

Smith, AJ

Sullivan, GW

Williams, DA

Wilson, ME

Xu, XW

Yodh, GB

机构：

[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[2] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA

[3] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[4] Los Alamos Natl Lab, Grp P 23, Los Alamos, NM 87545 USA

[5] George Mason Univ, Dept Phys & Astron, Fairfax, VA 22030 USA

[6] NYU, Dept Phys, New York, NY 10003 USA

[7] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[8] Univ New Hampshire, Dept Phys, Durham, NH 03824 USA

[9] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 25期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.95.251103

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Gamma-ray emission from a narrow band at the galactic equator has previously been detected up to 30 GeV. We report evidence for a TeV gamma-ray signal from a region of the galactic plane by Milagro, a large-field-of-view water Cherenkov detector for extensive air showers. An excess with a significance of 4.5 standard deviations has been observed from the region of galactic longitude l is an element of(40 degrees,100 degrees) and latitude parallel to b parallel to < 5 degrees. Under the assumption of a simple power law spectrum, with no cutoff in the EGRET-Milagro energy range, the measured integral flux is phi(gamma)(> 3.5 TeV)=(6.4 +/- 1.4 +/- 2.1)x10(-11) cm(-2) s(-1) sr(-1). This flux is consistent with an extrapolation of the EGRET spectrum between 1 and 30 GeV in this galactic region.

引用

页数：5

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