WFRF:(de Bhroithe A. O'Faolain)
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- Aliu, E. (author)
Multiwavelength Observations of the TeV Binary LS I +61° 303 with VERITAS, Fermi-LAT, and Swift/XRT during a TeV Outburst
- Article/chapterEnglish2013
Publisher, publication year, extent ...
- 2013
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:lnu-42787
- https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-42787URI
- https://doi.org/10.1088/0004-637X/779/1/88DOI
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- Language:English
- Summary in:English
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- We present the results of a multiwavelength observational campaign on the TeV binary system LS I +61° 303 with the VERITAS telescope array (>200 GeV), Fermi-LAT (0.3-300 GeV), and Swift/XRT (2-10 keV). The data were taken from 2011 December through 2012 January and show a strong detection in all three wavebands. During this period VERITAS obtained 24.9 hr of quality selected livetime data in which LS I +61° 303 was detected at a statistical significance of 11.9σ. These TeV observations show evidence for nightly variability in the TeV regime at a post-trial significance of 3.6σ. The combination of the simultaneously obtained TeV and X-ray fluxes do not demonstrate any evidence for a correlation between emission in the two bands. For the first time since the launch of the Fermi satellite in 2008, this TeV detection allows the construction of a detailed MeV-TeV spectral energy distribution from LS I +61° 303. This spectrum shows a distinct cutoff in emission near 4 GeV, with emission seen by the VERITAS observations following a simple power-law above 200 GeV. This feature in the spectrum of LS I +61° 303, obtained from overlapping observations with Fermi-LAT and VERITAS, may indicate that there are two distinct populations of accelerated particles producing the GeV and TeV emission.
Subject headings and genre
- NATURVETENSKAP Fysik Astronomi, astrofysik och kosmologi hsv//swe
- NATURAL SCIENCES Physical Sciences Astronomy, Astrophysics and Cosmology hsv//eng
- acceleration of particles
- binaries: general
- gamma rays: stars
- relativistic processes
- X-rays: binaries
- Astropartikelfysik
- Astroparticle Physics
Added entries (persons, corporate bodies, meetings, titles ...)
- Archambault, S. (author)
- Behera, B. (author)
- Berger, K. (author)
- Beilicke, M. (author)
- Benbow, W. (author)
- Bird, R. (author)
- Bouvier, A. (author)
- Bugaev, V. (author)
- Cerruti, M. (author)
- Chen, X. (author)
- Ciupik, L. (author)
- Connolly, M. P. (author)
- Cui, W. (author)
- Dumm, J. (author)
- Falcone, A. (author)
- Federici, S. (author)
- Feng, Q. (author)
- Finley, J. P. (author)
- Fortin, P. (author)
- Fortson, L. (author)
- Furniss, A. (author)
- Galante, N. (author)
- Gillanders, G. H. (author)
- Griffin, S. (author)
- Griffiths, S. T. (author)
- Grube, J. (author)
- Gyuk, G. (author)
- Hanna, D. (author)
- Holder, J. (author)
- Hughes, G. (author)
- Humensky, T. B. (author)
- Kaaret, P. (author)
- Kertzman, M. (author)
- Khassen, Y. (author)
- Kieda, D. (author)
- Krennrich, F. (author)
- Lang, M. J. (author)
- Maier, G. (author)
- Majumdar, P. (author)
- McArthur, S. (author)
- McCann, A. (author)
- Moriarty, P. (author)
- Mukherjee, R. (author)
- O’Faoláin de Bhróithe, A. (author)
- Ong, R. A. (author)
- Otte, A. N. (author)
- Park, N. (author)
- Perkins, J. S. (author)
- Pohl, M. (author)
- Popkow, A. (author)
- Prokoph, HeikeDESY, Germany(Swepub:lnu)hepraa (author)
- Quinn, J. (author)
- Ragan, K. (author)
- Rajotte, J. (author)
- Ratliff, G. (author)
- Reynolds, P. T. (author)
- Richards, G. T. (author)
- Roache, E. (author)
- Sembroski, G. H. (author)
- Sheidaei, F. (author)
- Skole, C. (author)
- Smith, A. W. (author)
- Staszak, D. (author)
- Telezhinsky, I. (author)
- Tyler, J. (author)
- Varlotta, A. (author)
- Vincent, S. (author)
- Wakely, S. P. (author)
- Weekes, T. C. (author)
- Weinstein, A. (author)
- Welsing, R. (author)
- Zajczyk, A. (author)
- Zitzer, B. (author)
- DESY, Germany (creator_code:org_t)
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- In:Astrophysical Journal779:10004-637X1538-4357
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- Aliu, E.
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- Behera, B.
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- Beilicke, M.
- Benbow, W.
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- Bird, R.
- Bouvier, A.
- Bugaev, V.
- Cerruti, M.
- Chen, X.
- Ciupik, L.
- Connolly, M. P.
- Cui, W.
- Dumm, J.
- Falcone, A.
- Federici, S.
- Feng, Q.
- Finley, J. P.
- Fortin, P.
- Fortson, L.
- Furniss, A.
- Galante, N.
- Gillanders, G. H ...
- Griffin, S.
- Griffiths, S. T.
- Grube, J.
- Gyuk, G.
- Hanna, D.
- Holder, J.
- Hughes, G.
- Humensky, T. B.
- Kaaret, P.
- Kertzman, M.
- Khassen, Y.
- Kieda, D.
- Krennrich, F.
- Lang, M. J.
- Maier, G.
- Majumdar, P.
- McArthur, S.
- McCann, A.
- Moriarty, P.
- Mukherjee, R.
- O’Faoláin de Bhr ...
- Ong, R. A.
- Otte, A. N.
- Park, N.
- Perkins, J. S.
- Pohl, M.
- Popkow, A.
- Prokoph, Heike
- Quinn, J.
- Ragan, K.
- Rajotte, J.
- Ratliff, G.
- Reynolds, P. T.
- Richards, G. T.
- Roache, E.
- Sembroski, G. H.
- Sheidaei, F.
- Skole, C.
- Smith, A. W.
- Staszak, D.
- Telezhinsky, I.
- Tyler, J.
- Varlotta, A.
- Vincent, S.
- Wakely, S. P.
- Weekes, T. C.
- Weinstein, A.
- Welsing, R.
- Zajczyk, A.
- Zitzer, B.
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