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Journal Articles The Astrophysical Journal Year : 2009

Pulsed Gamma-rays from PSR J2021+3651 with the Fermi Large Area Telescope

Dermer 1 , A. de Angelis 28 , A. de Luca 29 , F. de Palma 13

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A.A. Abdo
  • Function : Author
Markus Ackermann
  • Function : Author
Marco Ajello
  • Function : Author
W.B. Atwood
  • Function : Author
Luca Baldini
  • Function : Author
Guido Barbiellini
  • Function : Author
D. Bastieri
  • Function : Author
M. Battelino
  • Function : Author
B.M. Baughman
  • Function : Author
K. Bechtol
  • Function : Author
R. Bellazzini
  • Function : Author
B. Berenji
  • Function : Author
E.D. Bloom
  • Function : Author
G. Bogaert
A.W. Borgland
  • Function : Author
J. Bregeon
A. Brez
  • Function : Author
M. Brigida
  • Function : Author
T.H. Burnett
  • Function : Author
G.A. Caliandro
  • Function : Author
R.A. Cameron
  • Function : Author
F. Camilo
  • Function : Author
P. A. Caraveo
  • Function : Author
C. Cecchi
  • Function : Author
E. Charles
  • Function : Author
A. Chekhtman
  • Function : Author
A.W. Chen
  • Function : Author
C.C. Cheung
  • Function : Author
J. Chiang
  • Function : Author
S. Ciprini
  • Function : Author
L.R. Cominsky
  • Function : Author
J. Conrad
  • Function : Author
S. Cutini
  • Function : Author
P. Demorest
  • Function : Author
C.D. Dermer
  • Function : Author
A. de Angelis
  • Function : Author
A. de Luca
  • Function : Author
F. de Palma
  • Function : Author
S.W. Digel
  • Function : Author
M. Dormody
  • Function : Author
E. Do Couto E Silva
  • Function : Author
P.S. Drell
  • Function : Author
R. Dubois
  • Function : Author
C. Espinoza
  • Function : Author
C. Favuzzi
  • Function : Author
W.B. Focke
  • Function : Author
M. Frailis
  • Function : Author
P.C. C. Freire
  • Function : Author
Y. Fukazawa
S. Funk
  • Function : Author
P. Fusco
  • Function : Author
F. Gargano
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D. Gasparrini
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N. Gehrels
  • Function : Author
S. Germani
  • Function : Author
N. Giglietto
F. Giordano
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T. Glanzman
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G. Godfrey
  • Function : Author
J. E. Grove
  • Function : Author
Y. Hanabata
  • Function : Author
A. K. Harding
  • Function : Author
M. Hayashida
  • Function : Author
E. Hays
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R.E. Hughes
  • Function : Author
G. Johannesson
  • Function : Author
A.S. Johnson
  • Function : Author
R. P. Johnson
  • Function : Author
T.J. Johnson
  • Function : Author
W. N. Johnson
  • Function : Author
S. Johnston
  • Function : Author
T. Kamae
  • Function : Author
H. Katagiri
  • Function : Author
J. Kataoka
  • Function : Author
N. Kawai
  • Function : Author
M. Kerr
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B. Kiziltan
  • Function : Author
M. Kramer
  • Function : Author
F. Kuehn
  • Function : Author
M. Kuss
  • Function : Author
J. Lande
  • Function : Author
L. Latronico
  • Function : Author
S.-H. Lee
  • Function : Author
F. Longo
F. Loparco
  • Function : Author
B. Lott
M.N. Lovellette
  • Function : Author
P. Lubrano
  • Function : Author
A.G. Lyne
  • Function : Author
A. Makeev
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R.N. Manchester
  • Function : Author
M. Marelli
  • Function : Author
M.N. Mazziotta
  • Function : Author
W. Mcconville
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J. E. Mcenery
  • Function : Author
M. A. Mclaughlin
  • Function : Author
C. Meurer
  • Function : Author
P. F. Michelson
  • Function : Author
W. Mitthumsiri
  • Function : Author
T. Mizuno
  • Function : Author
A. A. Moiseev
  • Function : Author
C. Monte
  • Function : Author
M. E. Monzani
  • Function : Author
A. Morselli
  • Function : Author
I. V. Moskalenko
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S. Murgia
  • Function : Author
P. L. Nolan
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A. Noutsos
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T. Ohsugi
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N. Omodei
  • Function : Author
E. Orlando
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J. F. Ormes
  • Function : Author
M. Ozaki
D. Paneque
J. H. Panetta
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M. Pepe
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M. Pesce-Rollins
T.A. Porter
  • Function : Author
S. Raino
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R. Rando
  • Function : Author
S. M. Ransom
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M. Razzano
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A. Reimer
O. Reimer
  • Function : Author
S. Ritz
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L. S. Rochester
  • Function : Author
A. Y. Rodriguez
  • Function : Author
R. W. Romani
  • Function : Author
F. Ryde
  • Function : Author
H. F.-W. Sadrozinski
  • Function : Author
P. M. Saz Parkinson
  • Function : Author
C. Sgro
  • Function : Author
A. Sierpowska-Bartosik
  • Function : Author
E. J. Siskind
  • Function : Author
P. D. Smith
  • Function : Author
G. Spandre
  • Function : Author
P. Spinelli
  • Function : Author
B. W. Stappers
  • Function : Author
Jean-Luc Starck
  • Function : Author
  • PersonId : 858909
M. S. Strickman
  • Function : Author
D. J. Suson
  • Function : Author
H. Tajima
  • Function : Author
H. Takahashi
  • Function : Author
T. Takahashi
  • Function : Author
T. Tanaka
J. B. Thayer
  • Function : Author
J. G. Thayer
  • Function : Author
D. J. Thompson
  • Function : Author
S. E. Thorsett
  • Function : Author
L. Tibaldo
  • Function : Author
D. F. Torres
  • Function : Author
G. Tosti
  • Function : Author
A. Tramacere
  • Function : Author
Y. Uchiyama
  • Function : Author
T. L. Usher
  • Function : Author
A. van Etten
  • Function : Author
V. Vitale
A. P. Waite
  • Function : Author
E. Wallace
  • Function : Author
K. Watters
  • Function : Author
P. Weltevrede
  • Function : Author
K. S. Wood
  • Function : Author
T. Ylinen
  • Function : Author
M. Ziegler
  • Function : Author

Abstract

We report the detection of pulsed gamma-rays from the young, spin-powered radio pulsar PSR J2021+3651 using data acquired with the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope (formerly GLAST). The light curve consists of two narrow peaks of similar amplitude separated by 0.468 +/- 0.002 in phase. The first peak lags the maximum of the 2 GHz radio pulse by 0.162 +/- 0.004 +/- 0.01 in phase. The integral gamma-ray photon flux above 100 MeV is (56 +/- 3 +/- 11) x 10^{-8} /cm2/s. The photon spectrum is well-described by an exponentially cut-off power law of the form dF/dE = kE^{-\Gamma} e^(-E/E_c) where the energy E is expressed in GeV. The photon index is \Gamma = 1.5 +/- 0.1 +/- 0.1 and the exponential cut-off is E_c = 2.4 +/- 0.3 +/- 0.5 GeV. The first uncertainty is statistical and the second is systematic. The integral photon flux of the bridge is approximately 10% of the pulsed emission, and the upper limit on off-pulse gamma-ray emission from a putative pulsar wind nebula is <10% of the pulsed emission at the 95% confidence level. Radio polarization measurements yield a rotation measure of RM = 524 +/- 4 rad/m^2 but a poorly constrained magnetic geometry. Re-analysis of Chandra data enhanced the significance of the weak X-ray pulsations, and the first peak is roughly phase-aligned with the first gamma-ray peak. We discuss the emission region and beaming geometry based on the shape and spectrum of the gamma-ray light curve combined with radio and X-ray measurements, and the implications for the pulsar distance. Gamma-ray emission from the polar cap region seems unlikely for this pulsar.
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Dates and versions

in2p3-00394148 , version 1 (20-11-2019)

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A.A. Abdo, Markus Ackermann, Marco Ajello, W.B. Atwood, Luca Baldini, et al.. Pulsed Gamma-rays from PSR J2021+3651 with the Fermi Large Area Telescope. The Astrophysical Journal, 2009, 700, pp.1059-1066. ⟨10.1088/0004-637X/700/2/1059⟩. ⟨in2p3-00394148⟩
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