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

Academic Article

Abstract

  • 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 E (40 degrees, 100 degrees) and latitude /b/ < 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) x 10(-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.
  • Authors

  • 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, James
  • Samuelson, FW
  • Parkinson, PM Saz
  • Shoup, A
  • Sinnis, G
  • Smith, AJ
  • Sullivan, GW
  • Williams, DA
  • Wilson, ME
  • Xu, XW
  • Yodh, GB
  • Status

    Publication Date

  • December 16, 2005
  • Has Subject Area

    Published In

    Digital Object Identifier (doi)

    Pubmed Id

  • 16384445
  • Start Page

  • 251103
  • Volume

  • 95
  • Issue

  • 25