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Article: Search for gamma-ray emission from magnetars with the Fermi large area telescope

TitleSearch for gamma-ray emission from magnetars with the Fermi large area telescope
Authors
KeywordsGamma Rays: Stars
Magnetic Fields
Pulsars: Individual (4U 0142+614, 1E 1048.1-5937, 1E 1841-045, 1E 1547-5408, 1Rxs J1708-4009, Xte J1810-197, Cxou J1647-4552, 1E 2259+586, Sgr 1900+14, Sgr 1806-20, Sgr 1627-41, Sgr 0501+4516, Sgr 0418+5729)
Stars: Magnetars
Issue Date2010
PublisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205
Citation
Astrophysical Journal Letters, 2010, v. 725 n. 1 PART 2, p. L73-L78 How to Cite?
AbstractWe report on the search for 0.1-10GeV emission from magnetars in 17months of Fermi LargeAreaTelescope (LAT) observations. No significant evidence for gamma-ray emission from any of the currently known magnetars is found. The most stringent upper limits to date on their persistent emission in the Fermi energy range are estimated between ∼10-12 and 10-10 erg s-1 cm-2, depending on the source.We also searched for gamma-ray pulsations and possible outbursts, also with no significant detection. The upper limits derived support the presence of a cutoff at an energy below a few MeV in the persistent emission of magnetars. They also show the likely need for a revision of current models of outer-gap emission from stronglymagnetized pulsars, which, in some realizations, predict detectableGeV emission frommagnetars at flux levels exceeding the upper limits identified here using the Fermi-LAT observations. © 2010. The American Astronomical Society. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/188404
ISSN
2015 Impact Factor: 5.487
2015 SCImago Journal Rankings: 3.369
ISI Accession Number ID
References

 

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dc.date.accessioned2013-09-03T04:05:27Z-
dc.date.available2013-09-03T04:05:27Z-
dc.date.issued2010en_US
dc.identifier.citationAstrophysical Journal Letters, 2010, v. 725 n. 1 PART 2, p. L73-L78en_US
dc.identifier.issn2041-8205en_US
dc.identifier.urihttp://hdl.handle.net/10722/188404-
dc.description.abstractWe report on the search for 0.1-10GeV emission from magnetars in 17months of Fermi LargeAreaTelescope (LAT) observations. No significant evidence for gamma-ray emission from any of the currently known magnetars is found. The most stringent upper limits to date on their persistent emission in the Fermi energy range are estimated between ∼10-12 and 10-10 erg s-1 cm-2, depending on the source.We also searched for gamma-ray pulsations and possible outbursts, also with no significant detection. The upper limits derived support the presence of a cutoff at an energy below a few MeV in the persistent emission of magnetars. They also show the likely need for a revision of current models of outer-gap emission from stronglymagnetized pulsars, which, in some realizations, predict detectableGeV emission frommagnetars at flux levels exceeding the upper limits identified here using the Fermi-LAT observations. © 2010. The American Astronomical Society. All rights reserved.en_US
dc.languageengen_US
dc.publisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205en_US
dc.relation.ispartofAstrophysical Journal Lettersen_US
dc.subjectGamma Rays: Starsen_US
dc.subjectMagnetic Fieldsen_US
dc.subjectPulsars: Individual (4U 0142+614, 1E 1048.1-5937, 1E 1841-045, 1E 1547-5408, 1Rxs J1708-4009, Xte J1810-197, Cxou J1647-4552, 1E 2259+586, Sgr 1900+14, Sgr 1806-20, Sgr 1627-41, Sgr 0501+4516, Sgr 0418+5729)en_US
dc.subjectStars: Magnetarsen_US
dc.titleSearch for gamma-ray emission from magnetars with the Fermi large area telescopeen_US
dc.typeArticleen_US
dc.identifier.emailSaz Parkinson, PM: pablosp@hku.hken_US
dc.identifier.authoritySaz Parkinson, PM=rp01803en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1088/2041-8205/725/1/L73en_US
dc.identifier.scopuseid_2-s2.0-78650245465en_US
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dc.identifier.volume725en_US
dc.identifier.issue1 PART 2en_US
dc.identifier.spageL73en_US
dc.identifier.epageL78en_US
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