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Full-Text Articles in Physical Sciences and Mathematics
Multiwavelength Observations Of Ls I+61 Degrees 303 With Veritas, Swift, And Rxte, P. T. Reynolds, Et. Al.
Multiwavelength Observations Of Ls I+61 Degrees 303 With Veritas, Swift, And Rxte, P. T. Reynolds, Et. Al.
Physical Sciences Publications
We present results from a long-term monitoring campaign on the TeV binary LSI +61° 303 with VERITAS at energies above 500 GeV, and in the 2-10 keV hard X-ray bands with RXTE and Swift, sampling nine 26.5 day orbital cycles between 2006 September and 2008 February. The binary was observed by VERITAS to be variable, with all integrated observations resulting in a detection at the 8.8σ (2006/2007) and 7.3σ (2007/2008) significance level for emission above 500 GeV. The source was detected during active periods with flux values ranging from 5% to 20% of the Crab Nebula, varying over the course …
Investigating The Tev Morphology Of Mgro J1908+06 With Veritas, P. T. Reynolds, Et. Al.
Investigating The Tev Morphology Of Mgro J1908+06 With Veritas, P. T. Reynolds, Et. Al.
Physical Sciences Publications
We report on deep observations of the extended TeV gamma-ray source MGRO J1908+06 made with the VERITAS very high energy gamma-ray observatory. Previously, the TeV emission has been attributed to the pulsar wind nebula (PWN) of the Fermi-LAT pulsar PSR J1907+0602. We detect MGRO J1908+06 at a significance level of 14 standard deviations (14σ) and measure a photon index of 2.20 ± 0.10stat ± 0.20sys. The TeV emission is extended, covering the region near PSR J1907+0602 and also extending toward SNR G40.5-0.5. When fitted with a two-dimensional Gaussian, the intrinsic extension has a standard deviation of σsrc = 0fdg44 ± …