Mostrar el registro sencillo del ítem

Six Faint Gamma-ray Pulsars Seen with the Fermi Large Area Telescope -- Towards a Sample Blending into the Background

hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorHOU, X
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorSMITH, D.A.
hal.structure.identifierLaboratoire de Physique et Chimie de l'Environnement et de l'Espace [LPC2E]
hal.structure.identifierUnité Scientifique de la Station de Nançay [USN]
dc.contributor.authorGUILLEMOT, Lucas
hal.structure.identifierSpace Sciences Division
dc.contributor.authorCHEUNG, C.C.
hal.structure.identifierLaboratoire de Physique et Chimie de l'Environnement et de l'Espace [LPC2E]
hal.structure.identifierUnité Scientifique de la Station de Nançay [USN]
dc.contributor.authorCOGNARD, Ismaël
hal.structure.identifierHansen Experimental Physics Lab [Stanford] [HEPL]
dc.contributor.authorCRAIG, H.A.
hal.structure.identifierInstituto de Astrofisica [Santiago]
dc.contributor.authorESPINOZA, C.M.
hal.structure.identifierCSIRO Astronomy and Space Science
dc.contributor.authorJOHNSTON, S.
hal.structure.identifierJodrell Bank Centre for Astrophysics
hal.structure.identifierMax-Planck-Institut für Radioastronomie [MPIFR]
dc.contributor.authorKRAMER, M.
hal.structure.identifierHansen Experimental Physics Lab [Stanford] [HEPL]
hal.structure.identifierInstitut f¨ur Astro- und Teilchenphysik and Institut f¨ur Theoretische Physik
dc.contributor.authorREIMER, O.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorREPOSEUR, T.
hal.structure.identifierCSIRO Astronomy and Space Science
dc.contributor.authorSHANNON, R.
hal.structure.identifierJodrell Bank Centre for Astrophysics
dc.contributor.authorSTAPPERS, B.W
hal.structure.identifierJodrell Bank Centre for Astrophysics
dc.contributor.authorWELTEVREDE, P.
dc.date.issued2014-07-24
dc.identifier.issn0004-6361
dc.description.abstractEnContext: GeV gamma-ray pulsations from over 140 pulsars have been characterized using the Fermi Large Area Telescope, enabling improved understanding of the emission regions within the neutron star magnetospheres, and the contributions of pulsars to high energy electrons and diffuse gamma rays in the Milky Way. The first gamma-ray pulsars to be detected were the most intense and/or those with narrow pulses. Aims: As the Fermi mission progresses, progressively fainter objects can be studied. In addition to more distant pulsars (thus probing a larger volume of the Galaxy), or ones in high background regions (thus improving the sampling uniformity across the Galactic plane), we detect pulsars with broader pulses or lower luminosity. Adding pulsars to our catalog with inclination angles that are rare in the observed sample, and/or with lower spindown power, will reduce the bias in the currently known gamma-ray pulsar population. Methods: We use rotation ephemerides derived from radio observations to phase-fold gamma rays recorded by the Fermi Large Area Telescope, to then determine the pulse profile properties. Spectral analysis provides the luminosities and, when the signal-to-noise ratio allows, the cutoff energies. We constrain the pulsar distances by different means in order to minimize the luminosity uncertainties. Results: We present six new gamma-ray pulsars with an eclectic mix of properties. Three are young, and three are recycled. They include the farthest, the lowest power, two of the highest duty-cycle pulsars seen, and only the fourth young gamma-ray pulsar with a radio interpulse. We discuss the biases existing in the current gamma-ray pulsar catalog, and steps to be taken to mitigate the bias.
dc.language.isoen
dc.publisherEDP Sciences
dc.subject.enJ1843 − 1113
dc.subject.enGG Car
dc.subject.enJ1732 − 5049
dc.subject.enJ1705 − 1906
dc.subject.enJ1640 + 2224
dc.subject.enobservations – pulsars: general – pulsars: individual (J10 55 − 6028
dc.subject.enJ1913 + 0904)– stars: neutron – stars: individual: AG Car
dc.title.enSix Faint Gamma-ray Pulsars Seen with the Fermi Large Area Telescope -- Towards a Sample Blending into the Background
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/201424294
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Phénomènes cosmiques de haute energie [astro-ph.HE]
dc.subject.halPhysique [physics]
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]
dc.identifier.arxiv1407.6271
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageA44
bordeaux.volume570
bordeaux.peerReviewedoui
hal.identifierhal-01187941
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01187941v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Astronomy%20and%20Astrophysics%20-%20A&A&rft.date=2014-07-24&rft.volume=570&rft.spage=A44&rft.epage=A44&rft.eissn=0004-6361&rft.issn=0004-6361&rft.au=HOU,%20X&SMITH,%20D.A.&GUILLEMOT,%20Lucas&CHEUNG,%20C.C.&COGNARD,%20Isma%C3%ABl&rft.genre=article


Archivos en el ítem

ArchivosTamañoFormatoVer

No hay archivos asociados a este ítem.

Este ítem aparece en la(s) siguiente(s) colección(ones)

Mostrar el registro sencillo del ítem