GAMMA-RAY FLARE ACTIVITY FROM PSR B1259–63 DURING 2014 PERIASTRON PASSAGE AND COMPARISON TO ITS 2010 PASSAGE

Caliandro, G. A.; Cheung, C. C.; Wood, K. S.; Li, J.; Torres, D. F.; Scargle, J. D.

doi:10.1088/0004-637X/811/1/68

Title: GAMMA-RAY FLARE ACTIVITY FROM PSR B1259–63 DURING 2014 PERIASTRON PASSAGE AND COMPARISON TO ITS 2010 PASSAGE

Journal Article · Sun Sep 20 00:00:00 EDT 2015 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/811/1/68· OSTI ID:22525393

Caliandro, G. A. ^[1]; Cheung, C. C.; Wood, K. S. ^[2]; Li, J.; Torres, D. F. ^[3]; Scargle, J. D. ^[4]

W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA (United States)
Space Science Division, Naval Research Laboratory, Washington, DC 20375 (United States)
Institute of Space Sciences (CSIC-IEEC), Campus UAB, c. de Can Magrans s/n, E-08193 Bellaterra, Barcelona (Spain)
Space Sciences Division, NASA Ames Research Center, Moffett Field, CA 94035-1000 (United States)

PSR B1259–63/LS 2883 is a gamma-ray binary system containing a radio pulsar in a highly elliptical ∼3.4-year orbit around a Be star. In its 2010 periastron passage, multiwavelength emission from radio to TeV was observed, as well as an unexpected GeV flare measured by the Fermi Large Area Telescope (LAT). Here, we report the results of LAT monitoring of PSR B1259–63 during its most recent 2014 periastron passage. We compare the gamma-ray behavior in this periastron with the former in 2010 and find that PSR B1259–63 shows a recurrent GeV flare. The similarities and differences in the phenomenology of both periastron passages are discussed.

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OSTI ID:: 22525393

Journal Information:: Astrophysical Journal, Vol. 811, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X

Country of Publication:: United States

Language:: English

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Title: GAMMA-RAY FLARE ACTIVITY FROM PSR B1259–63 DURING 2014 PERIASTRON PASSAGE AND COMPARISON TO ITS 2010 PASSAGE

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