VERITAS Observations of the γ-Ray Binary LS I +61 303

By V. Acciari, M. Beilicke, G. Blaylock, S. Bradbury, J. Buckley, V. Bugaev, Y. Butt, K. Byrum, O. Celik, A. Cesarini and 67 more. 2008

146 citations recorded by the source corpus.

LS I +61 303 is one of only a few high-mass X-ray binaries currently detected at high significance in very high energy γ-rays. The system was observed over several orbital cycles (between 2006 September and 2007 February) with the VERITAS array of imaging air Cerenkov telescopes. A signal of γ-rays with energies above 300 GeV is found with a statistical significance of 8.4 standard deviations. The detected flux is measured to be strongly variable; the maximum flux is found during most orbital cycles at apastron. The energy spectrum for the period of maximum emission can be characterized by a power law with a photon index of Γ = 2.40 ± 0.16stat± 0.2sys and a flux above 300 GeV corresponding to 15%-20% of the flux from the Crab Nebula.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/d94d83a919d8babeeee74861ba2f0a146270a5bd

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In Astronomy and Astrophysics

1. F. Tavecchio
2. Y. Kovalev
3. E. Orlando
4. C. Dermer
5. M. Lister
6. A. Pushkarev
7. L. Maraschi
8. H. Krawczynski

In Nuclear and High Energy Physics

1. F. Tavecchio
2. C. Dermer
3. E. Orlando
4. Y. Kovalev
5. M. Lister
6. L. Maraschi
7. A. Pushkarev
8. H. Krawczynski

Citations in the corpus

• DISCOVERY OF TeV GAMMA-RAY EMISSION FROM TYCHO’S SUPERNOVA REMNANT (2011, methodology): “The data were analyzed following standard procedures (see, e.g., Acciari et al. 2008).”
• INSIGHTS INTO THE HIGH-ENERGY γ-RAY EMISSION OF MARKARIAN 501 FROM EXTENSIVE MULTIFREQUENCY OBSERVATIONS IN THE FERMI ERA (2011, methodology): “These data were analyzed following the prescription reported in Acciari et al. (2008).”
• FERMI LAT OBSERVATIONS OF LS I +61°303: FIRST DETECTION OF AN ORBITAL MODULATION IN GeV GAMMA RAYS (2009, methodology): “However, previous very high-energy gamma ray (>100 GeV, VHE) observations by MAGIC and VERITAS show peak emission close to apastron.”