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16 April 2024 |
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A Search for sub-TeV Gamma-rays from the Vela Pulsar Region with CANGAROO-III | | R.Enomoto
; K.Tsuchiya
; Y.Adachi
; S.Kabuki
; P.G.Edwards
; et al
; | | Date: |
11 Oct 2005 | | Affiliation: | CANGAROO-III collaboration | | Abstract: | We made stereoscopic observations of the Vela Pulsar region with two of the 10 m diameter CANGAROO-III imaging atmospheric Cherenkov telescopes in January and February, 2004, in a search for sub-TeV gamma-rays from the pulsar and surrounding regions. We describe the observations, provide a detailed account of the calibration methods, and introduce the improved and bias-free analysis techniques employed for CANGAROO-III data. No evidence of gamma-ray emission is found from either the pulsar position or the previously reported position offset by 0.13 degree, and the resulting upper limits are a factor of five less than the previously reported flux from observations with the CANGAROO-I 3.8 m telescope. Following the recent report by the H.E.S.S. group of TeV gamma-ray emission from the Pulsar Wind Nebula, which is $sim$0.5 degree south of the pulsar position, we examined this region and found supporting evidence for emission extended over $sim$0.6 degree. | | Source: | arXiv, astro-ph/0510300 | | Services: | Forum | Review | PDF | Favorites | |
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