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Very high energy γ-...
Very high energy γ-ray observations of Mrk 501 using the TACTIC imaging γ-ray telescope during 2005 06
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- Godambe, S. V. (author)
- Bhabha Atomic Research Centre, India
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- Rannot, R. C. (author)
- Bhabha Atomic Research Centre, India
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- Chandra, P. (author)
- Bhabha Atomic Research Centre, India
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- Yadav, K. K. (author)
- Bhabha Atomic Research Centre, India
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- Tickoo, A. K. (author)
- Bhabha Atomic Research Centre, India
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- Venugopal, K. (author)
- Bhabha Atomic Research Centre, India
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- Bhatt, N. (author)
- Bhabha Atomic Research Centre, India
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- Bhattacharyya, S. (author)
- Bhabha Atomic Research Centre, India
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- Chanchalani, K. (author)
- Bhabha Atomic Research Centre, India
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- Dhar, V. K. (author)
- Bhabha Atomic Research Centre, India
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- Goyal, H. C. (author)
- Bhabha Atomic Research Centre, India
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- Kaul, R. K. (author)
- Bhabha Atomic Research Centre, India
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- Kothari, M. (author)
- Bhabha Atomic Research Centre, India
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- Kotwal, S. (author)
- Bhabha Atomic Research Centre, India
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- Koul, M. K. (author)
- Bhabha Atomic Research Centre, India
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- Koul, R. (author)
- Bhabha Atomic Research Centre, India
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- Sahaynathan, B. S. (author)
- Bhabha Atomic Research Centre, India
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- Sharma, M. (author)
- Bhabha Atomic Research Centre, India
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- Thoudam, Satyendra (author)
- Bhabha Atomic Research Centre, India
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(creator_code:org_t)
- 2008-04-29
- 2008
- English.
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In: Journal of Physics G. - : IOP Publishing. - 0954-3899 .- 1361-6471. ; 35:6
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http://arxiv.org/pdf...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- In this paper we report on the Markarian 501 results obtained during our TeV γ-ray observations from 11 March to 12 May 2005 and 28 February to 7 May 2006 for 112.5 h with the TACTIC γ-ray telescope. During 2005 observations for 45.7 h, the source was found to be in a low state and we have placed an upper limit of 4.62 × 10−12 photons cm−2 s−1 at 3σ level on the integrated TeV γ-ray flux above 1 TeV from the source direction. However, during 2006 observations for 66.8 h, detailed data analysis revealed the presence of a TeV γ-ray signal from the source with a statistical significance of 7.5σ above Eγ≥ 1 TeV. The time-averaged differential energy spectrum of the source in the energy range 1–11 TeV is found to match well with the power-law function of the form (dΦ/dE = f0E−Γ) with f0 = (1.66 ± 0.52) × 10−11 cm−2 s−1 TeV−1 and Γ = 2.80 ± 0.27.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Physics
- Fysik
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Godambe, S. V.
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Rannot, R. C.
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Chandra, P.
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Yadav, K. K.
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Tickoo, A. K.
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Venugopal, K.
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show more...
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Bhatt, N.
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Bhattacharyya, S ...
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Chanchalani, K.
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Dhar, V. K.
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Goyal, H. C.
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Kaul, R. K.
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Kothari, M.
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Kotwal, S.
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Koul, M. K.
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Koul, R.
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Sahaynathan, B. ...
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Sharma, M.
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Thoudam, Satyend ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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Linnaeus University