Fermi large area telescope observations of the vela-X pulsar wind nebula

A. A. Abdo; M. Ackermann; M. Ajello; A. Allafort; L. Baldini; J. Ballet; G. Barbiellini; D. Bastieri; K. Bechtol; R. Bellazzini; B. Berenji; R. D. Blandford; E. D. Bloom; E. Bonamente; A. W. Borgland; A. Bouvier; J. Bregeon; A. Brez; M. Brigida; P. Bruel; T. H. Burnett; S. Buson; G. A. Caliandro; R. A. Cameron; P. A. Caraveo; S. Carrigan; J. M. Casandjian; C. Cecchi; Ö Çelik; A. Chekhtman; C. C. Chung; J. Chiang; S. Ciprini; R. Claus; J. Cohen-Tanugi; J. Conrad; A. De Angelis; F. De Palma; M. Dormody; E. Do Couto E Silva; P. S. Drell; R. Dubois; D. Dumora; C. Farnier; C. Favuzzi; S. J. Fegan; W. B. Focke; P. Fortin; M. Frailis; Y. Fukazawa; S. Funk; P. Fusco; F. Gargano; N. Gehrels; S. Germani; G. Giavitto; N. Giglietto; F. Giordano; T. Glanzman; G. Godfrey; I. A. Grenier; M. H. Grondin; J. E. Grove; L. Guillemot; S. Guiriec; A. K. Harding; M. Hayashida; E. Hays; D. Horan; R. E. Hughes; M. S. Jackson; G. Jóhannesson; A. S. Johnson; T. J. Johnson; W. N. Johnson; S. Johnston; T. Kamae; H. Katagiri; J. Kataoka; N. Kawai; M. Kerr; J. Knödlseder; M. Kuss; J. Lande; L. Latronico; S. H. Lee; M. Lemoine-Goumard; M. Llena Garde; F. Longo; F. Loparco; B. Lott; M. N. Lovellette; P. Lubrano; A. Makeev; M. Marelli; M. N. Mazziotta; J. E. McEnery; C. Meurer; P. F. Michelson; W. Mitthumsiri; T. Mizuno; A. A. Moiseev; C. Monte; M. E. Monzani; A. Morselli; I. V. Moskalenko; S. Murgia; T. Nakamori; P. L. Nolan; J. P. Norris; A. Noutsos; E. Nuss; T. Ohsugi; N. Omodei; E. Orlando; J. F. Ormes; M. Ozaki; D. Paneque; J. H. Panetta; D. Parent; V. Pelassa; M. Pepe; M. Pesce-Rollins; M. Pierbattista; F. Piron; T. A. Porter; S. Rainò; R. Rando; P. S. Ray; N. Rea; A. Reimer; O. Reimer; T. Reposeur; S. Ritz; A. Y. Rodriguez; R. W. Romani; M. Roth; F. Ryde; H. F.W. Sadrozinski; D. Sanchez; A. Sander; P. M. Saz Parkinson; J. D. Scargle; C. Sgrò; E. J. Siskind; D. A. Smith; P. D. Smith; G. Spandre; P. Spinelli; M. S. Strickman; D. J. Suson; H. Tajima; H. Takahashi; T. Takahashi; T. Tanaka; J. B. Thayer; J. G. Thayer; D. J. Thompson; L. Tibaldo; D. F. Torres; G. Tosti; A. Tramacere; Y. Uchiyama; T. L. Usher; A. Van Etten; V. Vasileiou; C. Venter; N. Vilchez; V. Vitale; A. P. Waite; P. Wang; P. Weltevrede; B. L. Winer; K. S. Wood; T. Ylinen; M. Ziegler

doi:10.1088/0004-637X/713/1/146

Fermi large area telescope observations of the vela-X pulsar wind nebula

A. A. Abdo
, M. Ackermann
, M. Ajello
, A. Allafort
, L. Baldini
, J. Ballet
, G. Barbiellini
, D. Bastieri
, K. Bechtol
, R. Bellazzini
, B. Berenji
, R. D. Blandford
, E. D. Bloom
, E. Bonamente
, A. W. Borgland
, A. Bouvier
, J. Bregeon
, A. Brez
, M. Brigida
, P. Bruel

T. H. Burnett, S. Buson, G. A. Caliandro, R. A. Cameron, P. A. Caraveo, S. Carrigan, J. M. Casandjian, C. Cecchi, Ö Çelik, A. Chekhtman, C. C. Chung, J. Chiang, S. Ciprini, R. Claus, J. Cohen-Tanugi, J. Conrad, A. De Angelis, F. De Palma, M. Dormody, E. Do Couto E Silva, P. S. Drell, R. Dubois, D. Dumora, C. Farnier, C. Favuzzi, S. J. Fegan, W. B. Focke, P. Fortin, M. Frailis, Y. Fukazawa, S. Funk, P. Fusco, F. Gargano, N. Gehrels, S. Germani, G. Giavitto, N. Giglietto, F. Giordano, T. Glanzman, G. Godfrey, I. A. Grenier, M. H. Grondin, J. E. Grove, L. Guillemot, S. Guiriec, A. K. Harding, M. Hayashida, E. Hays, D. Horan, R. E. Hughes, M. S. Jackson, G. Jóhannesson, A. S. Johnson, T. J. Johnson, W. N. Johnson, S. Johnston, T. Kamae, H. Katagiri, J. Kataoka, N. Kawai, M. Kerr, J. Knödlseder, M. Kuss, J. Lande, L. Latronico, S. H. Lee, M. Lemoine-Goumard, M. Llena Garde, F. Longo, F. Loparco, B. Lott, M. N. Lovellette, P. Lubrano, A. Makeev, M. Marelli, M. N. Mazziotta, J. E. McEnery, C. Meurer, P. F. Michelson, W. Mitthumsiri, T. Mizuno, A. A. Moiseev, C. Monte, M. E. Monzani, A. Morselli, I. V. Moskalenko, S. Murgia, T. Nakamori, P. L. Nolan, J. P. Norris, A. Noutsos, E. Nuss, T. Ohsugi, N. Omodei, E. Orlando, J. F. Ormes, M. Ozaki, D. Paneque, J. H. Panetta, D. Parent, V. Pelassa, M. Pepe, M. Pesce-Rollins, M. Pierbattista, F. Piron, T. A. Porter, S. Rainò, R. Rando, P. S. Ray, N. Rea, A. Reimer, O. Reimer, T. Reposeur, S. Ritz, A. Y. Rodriguez, R. W. Romani, M. Roth, F. Ryde, H. F.W. Sadrozinski, D. Sanchez, A. Sander, P. M. Saz Parkinson, J. D. Scargle, C. Sgrò, E. J. Siskind, D. A. Smith, P. D. Smith, G. Spandre, P. Spinelli, M. S. Strickman, D. J. Suson, H. Tajima, H. Takahashi, T. Takahashi, T. Tanaka, J. B. Thayer, J. G. Thayer, D. J. Thompson, L. Tibaldo, D. F. Torres, G. Tosti, A. Tramacere, Y. Uchiyama, T. L. Usher, A. Van Etten, V. Vasileiou, C. Venter, N. Vilchez, V. Vitale, A. P. Waite, P. Wang, P. Weltevrede, B. L. Winer, K. S. Wood, T. Ylinen, M. Ziegler

Space Science Division
Naval Research Laboratory
National Research Council
Stanford University
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
AIM (UMR 7158 CEA/DSM-CNRS-Universite Paris Diderot) Irfu
Universite Paris-Saclay
INFN Gruppo Collegato di Udine
INFN Sezione di Trieste
Dipartimento di Fisica
University of Trieste
INFN
Dipartimento di Fisica G. Galilei
University of Padova
Sezione di Perugia
INFN Sezione di Perugia
INFM CRS-SOFT
University of Perugia
Politecnico di Bari
INFN
INFN Sezione di Bari
Max-Planck-Institut für Radioastronomie
Department of Physics
University of Washington
University of São Paulo
INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Milan
NASA Goddard Space Flight Center
Center for Research and Exploration in Space Science and Technology (CRESST)
Department of Physics
Biochemical and Environmental Engineering
George Mason University
Laboratoire Univers et Particules de Montpellier
Department of Physics
Stockholm University
Oskar Klein Centre
INFN Gruppo
Sezione di Roma
University of California at Santa Cruz
Univ. Bordeaux
Université Paris-Sud
Ip Paris
Department of Physical Science
Hiroshima University
Department of Astronomy and Astrophysics
Pennsylvania State University
University of Maryland
Center for Space Plasma and Aeronomic Research
Department of Physics
The Ohio State University
KTH Royal Institute of Technology
Commonwealth Scientific and Industrial Research Organization
Waseda University
Department of Physics
Tokyo Institute of Technology
Cosmic Radiation Laboratory
RIKEN (The Institute of Physical and Chemical Research)
Centre national de la recherche scientifique
Department of Physics and Astronomy
University of Denver
School of Physics and Astronomy
Jodrell Bank Centre for Astrophysics
Max Planck Institut für Extraterrestrische Physik
ISAS/JAXA
University of Amsterdam
Medical University of Innsbruck
National Aeronautics and Space Administration (NASA)
NASA Ames Research Center
NYCB Real-Time Computing Inc.
Department of Chemistry and Physics
Purdue University Northwest
Pompeu Fabra University (UPF)
Consorzio Interuniversitario per la Fisica Spaziale (CIFS)
North-West University
Dipartimento di Fisica
University of Rome “Tor Vergata”
School of Pure and Applied Natural Sciences
University of Kalmar

Research output: Contribution to journal › Article › peer-review

70 Citations (Scopus)

Abstract

We report on gamma-ray observations in the off-pulse window of the Vela pulsar PSR B0833-45 using 11 months of survey data from the Fermi Large Area Telescope (LAT). This pulsar is located in the 8° diameter Vela supernova remnant, which contains several regions of non-thermal emission detected in the radio, X-ray, and gamma-ray bands. The gamma-ray emission detected by the LAT lies within one of these regions, the 2° × 3° area south of the pulsar known as Vela-X. The LAT flux is significantly spatially extended with a best-fit radius of 088 012 for an assumed radially symmetric uniform disk. The 200 MeV to 20 GeV LAT spectrum of this source is well described by a power law with a spectral index of 2.41±0.09±0.15 and integral flux above 100 MeV of (4.73±0.63±1.32) × 10^-7 cm ^-2 s^-1. The first errors represent the statistical error on the fit parameters, while the second ones are the systematic uncertainties. Detailed morphological and spectral analyses give strong constraints on the energetics and magnetic field of the pulsar wind nebula system and favor a scenario with two distinct electron populations.

Original language	English
Pages (from-to)	146-153
Number of pages	8
Journal	Astrophysical Journal
Volume	713
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/713/1/146
Publication status	Published - 1 Jan 2010

Keywords

Gamma rays: general
Pulsars: general
Pulsars: individual (Vela, PSR J08354510)

Access to Document

10.1088/0004-637X/713/1/146

Cite this

Abdo, A. A., Ackermann, M., Ajello, M., Allafort, A., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R., Berenji, B., Blandford, R. D., Bloom, E. D., Bonamente, E., Borgland, A. W., Bouvier, A., Bregeon, J., Brez, A., Brigida, M., ... Ziegler, M. (2010). Fermi large area telescope observations of the vela-X pulsar wind nebula. Astrophysical Journal, 713(1), 146-153. https://doi.org/10.1088/0004-637X/713/1/146

@article{ef711aa7961f4e32a7836b630d6e3333,

title = "Fermi large area telescope observations of the vela-X pulsar wind nebula",

abstract = "We report on gamma-ray observations in the off-pulse window of the Vela pulsar PSR B0833-45 using 11 months of survey data from the Fermi Large Area Telescope (LAT). This pulsar is located in the 8° diameter Vela supernova remnant, which contains several regions of non-thermal emission detected in the radio, X-ray, and gamma-ray bands. The gamma-ray emission detected by the LAT lies within one of these regions, the 2° {\texttimes} 3° area south of the pulsar known as Vela-X. The LAT flux is significantly spatially extended with a best-fit radius of 088 012 for an assumed radially symmetric uniform disk. The 200 MeV to 20 GeV LAT spectrum of this source is well described by a power law with a spectral index of 2.41±0.09±0.15 and integral flux above 100 MeV of (4.73±0.63±1.32) {\texttimes} 10-7 cm -2 s-1. The first errors represent the statistical error on the fit parameters, while the second ones are the systematic uncertainties. Detailed morphological and spectral analyses give strong constraints on the energetics and magnetic field of the pulsar wind nebula system and favor a scenario with two distinct electron populations.",

keywords = "Gamma rays: general, Pulsars: general, Pulsars: individual (Vela, PSR J08354510)",

author = "Abdo, \{A. A.\} and M. Ackermann and M. Ajello and A. Allafort and L. Baldini and J. Ballet and G. Barbiellini and D. Bastieri and K. Bechtol and R. Bellazzini and B. Berenji and Blandford, \{R. D.\} and Bloom, \{E. D.\} and E. Bonamente and Borgland, \{A. W.\} and A. Bouvier and J. Bregeon and A. Brez and M. Brigida and P. Bruel and Burnett, \{T. H.\} and S. Buson and Caliandro, \{G. A.\} and Cameron, \{R. A.\} and Caraveo, \{P. A.\} and S. Carrigan and Casandjian, \{J. M.\} and C. Cecchi and {\"O} {\c C}elik and A. Chekhtman and Chung, \{C. C.\} and J. Chiang and S. Ciprini and R. Claus and J. Cohen-Tanugi and J. Conrad and \{De Angelis\}, A. and \{De Palma\}, F. and M. Dormody and \{Do Couto E Silva\}, E. and Drell, \{P. S.\} and R. Dubois and D. Dumora and C. Farnier and C. Favuzzi and Fegan, \{S. J.\} and Focke, \{W. B.\} and P. Fortin and M. Frailis and Y. Fukazawa and S. Funk and P. Fusco and F. Gargano and N. Gehrels and S. Germani and G. Giavitto and N. Giglietto and F. Giordano and T. Glanzman and G. Godfrey and Grenier, \{I. A.\} and Grondin, \{M. H.\} and Grove, \{J. E.\} and L. Guillemot and S. Guiriec and Harding, \{A. K.\} and M. Hayashida and E. Hays and D. Horan and Hughes, \{R. E.\} and Jackson, \{M. S.\} and G. J{\'o}hannesson and Johnson, \{A. S.\} and Johnson, \{T. J.\} and Johnson, \{W. N.\} and S. Johnston and T. Kamae and H. Katagiri and J. Kataoka and N. Kawai and M. Kerr and J. Kn{\"o}dlseder and M. Kuss and J. Lande and L. Latronico and Lee, \{S. H.\} and M. Lemoine-Goumard and \{Llena Garde\}, M. and F. Longo and F. Loparco and B. Lott and Lovellette, \{M. N.\} and P. Lubrano and A. Makeev and M. Marelli and Mazziotta, \{M. N.\} and McEnery, \{J. E.\} and C. Meurer and Michelson, \{P. F.\} and W. Mitthumsiri and T. Mizuno and Moiseev, \{A. A.\} and C. Monte and Monzani, \{M. E.\} and A. Morselli and Moskalenko, \{I. V.\} and S. Murgia and T. Nakamori and Nolan, \{P. L.\} and Norris, \{J. P.\} and A. Noutsos and E. Nuss and T. Ohsugi and N. Omodei and E. Orlando and Ormes, \{J. F.\} and M. Ozaki and D. Paneque and Panetta, \{J. H.\} and D. Parent and V. Pelassa and M. Pepe and M. Pesce-Rollins and M. Pierbattista and F. Piron and Porter, \{T. A.\} and S. Rain{\`o} and R. Rando and Ray, \{P. S.\} and N. Rea and A. Reimer and O. Reimer and T. Reposeur and S. Ritz and Rodriguez, \{A. Y.\} and Romani, \{R. W.\} and M. Roth and F. Ryde and Sadrozinski, \{H. F.W.\} and D. Sanchez and A. Sander and \{Saz Parkinson\}, \{P. M.\} and Scargle, \{J. D.\} and C. Sgr{\`o} and Siskind, \{E. J.\} and Smith, \{D. A.\} and Smith, \{P. D.\} and G. Spandre and P. Spinelli and Strickman, \{M. S.\} and Suson, \{D. J.\} and H. Tajima and H. Takahashi and T. Takahashi and T. Tanaka and Thayer, \{J. B.\} and Thayer, \{J. G.\} and Thompson, \{D. J.\} and L. Tibaldo and Torres, \{D. F.\} and G. Tosti and A. Tramacere and Y. Uchiyama and Usher, \{T. L.\} and \{Van Etten\}, A. and V. Vasileiou and C. Venter and N. Vilchez and V. Vitale and Waite, \{A. P.\} and P. Wang and P. Weltevrede and Winer, \{B. L.\} and Wood, \{K. S.\} and T. Ylinen and M. Ziegler",

year = "2010",

month = jan,

day = "1",

doi = "10.1088/0004-637X/713/1/146",

language = "English",

volume = "713",

pages = "146--153",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "1",

}

Abdo, AA, Ackermann, M, Ajello, M, Allafort, A, Baldini, L, Ballet, J, Barbiellini, G, Bastieri, D, Bechtol, K, Bellazzini, R, Berenji, B, Blandford, RD, Bloom, ED, Bonamente, E, Borgland, AW, Bouvier, A, Bregeon, J, Brez, A, Brigida, M, Bruel, P, Burnett, TH, Buson, S, Caliandro, GA, Cameron, RA, Caraveo, PA, Carrigan, S, Casandjian, JM, Cecchi, C, Çelik, Ö, Chekhtman, A, Chung, CC, Chiang, J, Ciprini, S, Claus, R, Cohen-Tanugi, J, Conrad, J, De Angelis, A, De Palma, F, Dormody, M, Do Couto E Silva, E, Drell, PS, Dubois, R, Dumora, D, Farnier, C, Favuzzi, C, Fegan, SJ, Focke, WB, Fortin, P, Frailis, M, Fukazawa, Y, Funk, S, Fusco, P, Gargano, F, Gehrels, N, Germani, S, Giavitto, G, Giglietto, N, Giordano, F, Glanzman, T, Godfrey, G, Grenier, IA, Grondin, MH, Grove, JE, Guillemot, L, Guiriec, S, Harding, AK, Hayashida, M, Hays, E, Horan, D, Hughes, RE, Jackson, MS, Jóhannesson, G, Johnson, AS, Johnson, TJ, Johnson, WN, Johnston, S, Kamae, T, Katagiri, H, Kataoka, J, Kawai, N, Kerr, M, Knödlseder, J, Kuss, M, Lande, J, Latronico, L, Lee, SH, Lemoine-Goumard, M, Llena Garde, M, Longo, F, Loparco, F, Lott, B, Lovellette, MN, Lubrano, P, Makeev, A, Marelli, M, Mazziotta, MN, McEnery, JE, Meurer, C, Michelson, PF, Mitthumsiri, W, Mizuno, T, Moiseev, AA, Monte, C, Monzani, ME, Morselli, A, Moskalenko, IV, Murgia, S, Nakamori, T, Nolan, PL, Norris, JP, Noutsos, A, Nuss, E, Ohsugi, T, Omodei, N, Orlando, E, Ormes, JF, Ozaki, M, Paneque, D, Panetta, JH, Parent, D, Pelassa, V, Pepe, M, Pesce-Rollins, M, Pierbattista, M, Piron, F, Porter, TA, Rainò, S, Rando, R, Ray, PS, Rea, N, Reimer, A, Reimer, O, Reposeur, T, Ritz, S, Rodriguez, AY, Romani, RW, Roth, M, Ryde, F, Sadrozinski, HFW, Sanchez, D, Sander, A, Saz Parkinson, PM, Scargle, JD, Sgrò, C, Siskind, EJ, Smith, DA, Smith, PD, Spandre, G, Spinelli, P, Strickman, MS, Suson, DJ, Tajima, H, Takahashi, H, Takahashi, T, Tanaka, T, Thayer, JB, Thayer, JG, Thompson, DJ, Tibaldo, L, Torres, DF, Tosti, G, Tramacere, A, Uchiyama, Y, Usher, TL, Van Etten, A, Vasileiou, V, Venter, C, Vilchez, N, Vitale, V, Waite, AP, Wang, P, Weltevrede, P, Winer, BL, Wood, KS, Ylinen, T & Ziegler, M 2010, 'Fermi large area telescope observations of the vela-X pulsar wind nebula', Astrophysical Journal, vol. 713, no. 1, pp. 146-153. https://doi.org/10.1088/0004-637X/713/1/146

TY - JOUR

T1 - Fermi large area telescope observations of the vela-X pulsar wind nebula

AU - Abdo, A. A.

AU - Ackermann, M.

AU - Ajello, M.

AU - Allafort, A.

AU - Baldini, L.

AU - Ballet, J.

AU - Barbiellini, G.

AU - Bastieri, D.

AU - Bechtol, K.

AU - Bellazzini, R.

AU - Berenji, B.

AU - Blandford, R. D.

AU - Bloom, E. D.

AU - Bonamente, E.

AU - Borgland, A. W.

AU - Bouvier, A.

AU - Bregeon, J.

AU - Brez, A.

AU - Brigida, M.

AU - Bruel, P.

AU - Burnett, T. H.

AU - Buson, S.

AU - Caliandro, G. A.

AU - Cameron, R. A.

AU - Caraveo, P. A.

AU - Carrigan, S.

AU - Casandjian, J. M.

AU - Cecchi, C.

AU - Çelik, Ö

AU - Chekhtman, A.

AU - Chung, C. C.

AU - Chiang, J.

AU - Ciprini, S.

AU - Claus, R.

AU - Cohen-Tanugi, J.

AU - Conrad, J.

AU - De Angelis, A.

AU - De Palma, F.

AU - Dormody, M.

AU - Do Couto E Silva, E.

AU - Drell, P. S.

AU - Dubois, R.

AU - Dumora, D.

AU - Farnier, C.

AU - Favuzzi, C.

AU - Fegan, S. J.

AU - Focke, W. B.

AU - Fortin, P.

AU - Frailis, M.

AU - Fukazawa, Y.

AU - Funk, S.

AU - Fusco, P.

AU - Gargano, F.

AU - Gehrels, N.

AU - Germani, S.

AU - Giavitto, G.

AU - Giglietto, N.

AU - Giordano, F.

AU - Glanzman, T.

AU - Godfrey, G.

AU - Grenier, I. A.

AU - Grondin, M. H.

AU - Grove, J. E.

AU - Guillemot, L.

AU - Guiriec, S.

AU - Harding, A. K.

AU - Hayashida, M.

AU - Hays, E.

AU - Horan, D.

AU - Hughes, R. E.

AU - Jackson, M. S.

AU - Jóhannesson, G.

AU - Johnson, A. S.

AU - Johnson, T. J.

AU - Johnson, W. N.

AU - Johnston, S.

AU - Kamae, T.

AU - Katagiri, H.

AU - Kataoka, J.

AU - Kawai, N.

AU - Kerr, M.

AU - Knödlseder, J.

AU - Kuss, M.

AU - Lande, J.

AU - Latronico, L.

AU - Lee, S. H.

AU - Lemoine-Goumard, M.

AU - Llena Garde, M.

AU - Longo, F.

AU - Loparco, F.

AU - Lott, B.

AU - Lovellette, M. N.

AU - Lubrano, P.

AU - Makeev, A.

AU - Marelli, M.

AU - Mazziotta, M. N.

AU - McEnery, J. E.

AU - Meurer, C.

AU - Michelson, P. F.

AU - Mitthumsiri, W.

AU - Mizuno, T.

AU - Moiseev, A. A.

AU - Monte, C.

AU - Monzani, M. E.

AU - Morselli, A.

AU - Moskalenko, I. V.

AU - Murgia, S.

AU - Nakamori, T.

AU - Nolan, P. L.

AU - Norris, J. P.

AU - Noutsos, A.

AU - Nuss, E.

AU - Ohsugi, T.

AU - Omodei, N.

AU - Orlando, E.

AU - Ormes, J. F.

AU - Ozaki, M.

AU - Paneque, D.

AU - Panetta, J. H.

AU - Parent, D.

AU - Pelassa, V.

AU - Pepe, M.

AU - Pesce-Rollins, M.

AU - Pierbattista, M.

AU - Piron, F.

AU - Porter, T. A.

AU - Rainò, S.

AU - Rando, R.

AU - Ray, P. S.

AU - Rea, N.

AU - Reimer, A.

AU - Reimer, O.

AU - Reposeur, T.

AU - Ritz, S.

AU - Rodriguez, A. Y.

AU - Romani, R. W.

AU - Roth, M.

AU - Ryde, F.

AU - Sadrozinski, H. F.W.

AU - Sanchez, D.

AU - Sander, A.

AU - Saz Parkinson, P. M.

AU - Scargle, J. D.

AU - Sgrò, C.

AU - Siskind, E. J.

AU - Smith, D. A.

AU - Smith, P. D.

AU - Spandre, G.

AU - Spinelli, P.

AU - Strickman, M. S.

AU - Suson, D. J.

AU - Tajima, H.

AU - Takahashi, H.

AU - Takahashi, T.

AU - Tanaka, T.

AU - Thayer, J. B.

AU - Thayer, J. G.

AU - Thompson, D. J.

AU - Tibaldo, L.

AU - Torres, D. F.

AU - Tosti, G.

AU - Tramacere, A.

AU - Uchiyama, Y.

AU - Usher, T. L.

AU - Van Etten, A.

AU - Vasileiou, V.

AU - Venter, C.

AU - Vilchez, N.

AU - Vitale, V.

AU - Waite, A. P.

AU - Wang, P.

AU - Weltevrede, P.

AU - Winer, B. L.

AU - Wood, K. S.

AU - Ylinen, T.

AU - Ziegler, M.

PY - 2010/1/1

Y1 - 2010/1/1

N2 - We report on gamma-ray observations in the off-pulse window of the Vela pulsar PSR B0833-45 using 11 months of survey data from the Fermi Large Area Telescope (LAT). This pulsar is located in the 8° diameter Vela supernova remnant, which contains several regions of non-thermal emission detected in the radio, X-ray, and gamma-ray bands. The gamma-ray emission detected by the LAT lies within one of these regions, the 2° × 3° area south of the pulsar known as Vela-X. The LAT flux is significantly spatially extended with a best-fit radius of 088 012 for an assumed radially symmetric uniform disk. The 200 MeV to 20 GeV LAT spectrum of this source is well described by a power law with a spectral index of 2.41±0.09±0.15 and integral flux above 100 MeV of (4.73±0.63±1.32) × 10-7 cm -2 s-1. The first errors represent the statistical error on the fit parameters, while the second ones are the systematic uncertainties. Detailed morphological and spectral analyses give strong constraints on the energetics and magnetic field of the pulsar wind nebula system and favor a scenario with two distinct electron populations.

AB - We report on gamma-ray observations in the off-pulse window of the Vela pulsar PSR B0833-45 using 11 months of survey data from the Fermi Large Area Telescope (LAT). This pulsar is located in the 8° diameter Vela supernova remnant, which contains several regions of non-thermal emission detected in the radio, X-ray, and gamma-ray bands. The gamma-ray emission detected by the LAT lies within one of these regions, the 2° × 3° area south of the pulsar known as Vela-X. The LAT flux is significantly spatially extended with a best-fit radius of 088 012 for an assumed radially symmetric uniform disk. The 200 MeV to 20 GeV LAT spectrum of this source is well described by a power law with a spectral index of 2.41±0.09±0.15 and integral flux above 100 MeV of (4.73±0.63±1.32) × 10-7 cm -2 s-1. The first errors represent the statistical error on the fit parameters, while the second ones are the systematic uncertainties. Detailed morphological and spectral analyses give strong constraints on the energetics and magnetic field of the pulsar wind nebula system and favor a scenario with two distinct electron populations.

KW - Gamma rays: general

KW - Pulsars: general

KW - Pulsars: individual (Vela, PSR J08354510)

U2 - 10.1088/0004-637X/713/1/146

DO - 10.1088/0004-637X/713/1/146

M3 - Article

AN - SCOPUS:77950207663

SN - 0004-637X

VL - 713

SP - 146

EP - 153

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

ER -

Fermi large area telescope observations of the vela-X pulsar wind nebula

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