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Title: Periodic Emission from the Gamma-Ray Binary 1FGL J1018.6-5856

Abstract

Gamma-ray binaries are stellar systems containing a neutron star or black hole with gamma-ray emission produced by an interaction between the components. These systems are rare, even though binary evolution models predict dozens in our Galaxy. A search for gamma-ray binaries with the Fermi Large Area Telescope (LAT) shows that 1FGL J1018.6-5856 exhibits intensity and spectral modulation with a 16.6 day period. We identified a variable X-ray counterpart, which shows a sharp maximum coinciding with maximum gamma-ray emission, as well as an O6V((f)) star optical counterpart and a radio counterpart that is also apparently modulated on the orbital period. 1FGL J1018.6-5856 is thus a gamma-ray binary, and its detection suggests the presence of other fainter binaries in the Galaxy.

Authors:
 [1]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States); et al.
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
Contributing Org.:
Fermi LAT Collaboration
OSTI Identifier:
1356773
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Science
Additional Journal Information:
Journal Volume: 335; Journal Issue: 6065; Journal ID: ISSN 0036-8075
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Ackermann, M. Periodic Emission from the Gamma-Ray Binary 1FGL J1018.6-5856. United States: N. p., 2012. Web. doi:10.1126/science.1213974.
Ackermann, M. Periodic Emission from the Gamma-Ray Binary 1FGL J1018.6-5856. United States. doi:10.1126/science.1213974.
Ackermann, M. Thu . "Periodic Emission from the Gamma-Ray Binary 1FGL J1018.6-5856". United States. doi:10.1126/science.1213974. https://www.osti.gov/servlets/purl/1356773.
@article{osti_1356773,
title = {Periodic Emission from the Gamma-Ray Binary 1FGL J1018.6-5856},
author = {Ackermann, M.},
abstractNote = {Gamma-ray binaries are stellar systems containing a neutron star or black hole with gamma-ray emission produced by an interaction between the components. These systems are rare, even though binary evolution models predict dozens in our Galaxy. A search for gamma-ray binaries with the Fermi Large Area Telescope (LAT) shows that 1FGL J1018.6-5856 exhibits intensity and spectral modulation with a 16.6 day period. We identified a variable X-ray counterpart, which shows a sharp maximum coinciding with maximum gamma-ray emission, as well as an O6V((f)) star optical counterpart and a radio counterpart that is also apparently modulated on the orbital period. 1FGL J1018.6-5856 is thus a gamma-ray binary, and its detection suggests the presence of other fainter binaries in the Galaxy.},
doi = {10.1126/science.1213974},
journal = {Science},
number = 6065,
volume = 335,
place = {United States},
year = {2012},
month = {1}
}

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Cited by: 48 works
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