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Article: PSR J2030+3641: Radio discovery and gamma-ray study of a middle-aged pulsar in the now identified Fermi-LAT source 1FGL J2030.0+3641

TitlePSR J2030+3641: Radio discovery and gamma-ray study of a middle-aged pulsar in the now identified Fermi-LAT source 1FGL J2030.0+3641
Authors
KeywordsGamma Rays: Stars
Pulsars: Individual (Psr J2030+3641)
Issue Date2012
PublisherInstitute of Physics Publishing, Inc. The Journal's web site is located at http://iopscience.iop.org/0004-637X/
Citation
Astrophysical Journal, 2012, v. 746 n. 1 How to Cite?
AbstractIn a radio search with the Green Bank Telescope of three unidentified low Galactic latitude Fermi Large Area Telescope (LAT) sources, we have discovered the middle-aged pulsar J2030+3641 associated with 1FGLJ2030.0+3641 (2FGL J2030.0+3640). Following the detection of gamma-ray pulsations using a radio ephemeris, we have obtained a phase-coherent timing solution based on gamma-ray and radio pulse arrival times which spans the entire Fermi mission. With a rotation period of 0.2s, a spin-down luminosity of 3 × 10 34ergs -1, and a characteristic age of 0.5Myr, PSRJ2030+3641 is a middle-aged neutron star with spin parameters similar to those of the exceedingly gamma-ray-bright and radio-undetected Geminga. Its gamma-ray flux is 1% that of Geminga, primarily because of its much larger distance, as suggested by the large integrated column density of free electrons, DM = 246pccm -3. We fit the gamma-ray light curve, along with limited radio polarimetric constraints, to four geometrical models of magnetospheric emission, and while none of the fits have high significance some are encouraging and suggest that further refinements of these models may be worthwhile. We argue that not many more non-millisecond radio pulsars may be detected along the Galactic plane that are responsible for LAT sources, but that modified methods to search for gamma-ray pulsations should be productive - PSRJ2030+3641 would have been found blindly in gamma rays if only ≳ 0.8GeV photons had been considered, owing to its relatively flat spectrum and location in a region of high soft background. © 2012. The American Astronomical Society. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/188416
ISSN
2015 Impact Factor: 5.909
2015 SCImago Journal Rankings: 3.266
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorCamilo, Fen_US
dc.contributor.authorKerr, Men_US
dc.contributor.authorRay, PSen_US
dc.contributor.authorRansom, SMen_US
dc.contributor.authorJohnston, Sen_US
dc.contributor.authorRomani, RWen_US
dc.contributor.authorParent, Den_US
dc.contributor.authorDecesar, MEen_US
dc.contributor.authorHarding, AKen_US
dc.contributor.authorDonato, Den_US
dc.contributor.authorSaz Parkinson, PMen_US
dc.contributor.authorFerrara, ECen_US
dc.contributor.authorFreire, PCCen_US
dc.contributor.authorGuillemot, Len_US
dc.contributor.authorKeith, Men_US
dc.contributor.authorKramer, Men_US
dc.contributor.authorWood, KSen_US
dc.date.accessioned2013-09-03T04:05:40Z-
dc.date.available2013-09-03T04:05:40Z-
dc.date.issued2012en_US
dc.identifier.citationAstrophysical Journal, 2012, v. 746 n. 1en_US
dc.identifier.issn0004-637Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/188416-
dc.description.abstractIn a radio search with the Green Bank Telescope of three unidentified low Galactic latitude Fermi Large Area Telescope (LAT) sources, we have discovered the middle-aged pulsar J2030+3641 associated with 1FGLJ2030.0+3641 (2FGL J2030.0+3640). Following the detection of gamma-ray pulsations using a radio ephemeris, we have obtained a phase-coherent timing solution based on gamma-ray and radio pulse arrival times which spans the entire Fermi mission. With a rotation period of 0.2s, a spin-down luminosity of 3 × 10 34ergs -1, and a characteristic age of 0.5Myr, PSRJ2030+3641 is a middle-aged neutron star with spin parameters similar to those of the exceedingly gamma-ray-bright and radio-undetected Geminga. Its gamma-ray flux is 1% that of Geminga, primarily because of its much larger distance, as suggested by the large integrated column density of free electrons, DM = 246pccm -3. We fit the gamma-ray light curve, along with limited radio polarimetric constraints, to four geometrical models of magnetospheric emission, and while none of the fits have high significance some are encouraging and suggest that further refinements of these models may be worthwhile. We argue that not many more non-millisecond radio pulsars may be detected along the Galactic plane that are responsible for LAT sources, but that modified methods to search for gamma-ray pulsations should be productive - PSRJ2030+3641 would have been found blindly in gamma rays if only ≳ 0.8GeV photons had been considered, owing to its relatively flat spectrum and location in a region of high soft background. © 2012. The American Astronomical Society. All rights reserved.en_US
dc.languageengen_US
dc.publisherInstitute of Physics Publishing, Inc. The Journal's web site is located at http://iopscience.iop.org/0004-637X/en_US
dc.relation.ispartofAstrophysical Journalen_US
dc.subjectGamma Rays: Starsen_US
dc.subjectPulsars: Individual (Psr J2030+3641)en_US
dc.titlePSR J2030+3641: Radio discovery and gamma-ray study of a middle-aged pulsar in the now identified Fermi-LAT source 1FGL J2030.0+3641en_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.doi10.1088/0004-637X/746/1/39en_US
dc.identifier.scopuseid_2-s2.0-84856266243en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84856266243&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume746en_US
dc.identifier.issue1en_US
dc.identifier.isiWOS:000302861300039-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridCamilo, F=7006263946en_US
dc.identifier.scopusauthoridKerr, M=35229880000en_US
dc.identifier.scopusauthoridRay, PS=7401892043en_US
dc.identifier.scopusauthoridRansom, SM=7005562794en_US
dc.identifier.scopusauthoridJohnston, S=7401782039en_US
dc.identifier.scopusauthoridRomani, RW=35248859100en_US
dc.identifier.scopusauthoridParent, D=25724573200en_US
dc.identifier.scopusauthoridDecesar, ME=35768916200en_US
dc.identifier.scopusauthoridHarding, AK=7202709535en_US
dc.identifier.scopusauthoridDonato, D=7004020295en_US
dc.identifier.scopusauthoridSaz Parkinson, PM=8948464400en_US
dc.identifier.scopusauthoridFerrara, EC=7005472148en_US
dc.identifier.scopusauthoridFreire, PCC=7005742539en_US
dc.identifier.scopusauthoridGuillemot, L=54926728000en_US
dc.identifier.scopusauthoridKeith, M=24829229000en_US
dc.identifier.scopusauthoridKramer, M=23968081200en_US
dc.identifier.scopusauthoridWood, KS=7401835806en_US

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