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Journal Articles The Astrophysical Journal Year : 2010

The Spectral Energy Distribution of Fermi bright blazars

A.A. Abdo , Markus Ackermann , Marco Ajello , Magnus Axelsson , Luca Baldini , Jean Ballet (1) , Guido Barbiellini , D. Bastieri , B.M. Baughman , K. Bechtol , R. Bellazzini , B. Berenji , R.D. Blandford , E.D. Bloom , E. Bonamente , A. Borgland , J. Bregeon , A. Brez , M. Brigida , Pascal Bruel (2) , T. H. Burnett , S. Buson , G. A. Caliandro , R. A. Cameron , P. A. Caraveo , J. M. Casandjian (1) , E. Cavazzuti , C. Cecchi , O. Celik , E. Charles (1) , S. Chaty (1) , A. Chekhtman , J. Chiang , S. Ciprini , R. Claus , J. Cohen-Tanugi (3) , S. Colafrancesco , L. R. Cominsky , J. Conrad , L. Costamante , S. Cutini , C. D. Dermer , A. de Angelis , F. de Palma , S. W. Digel , E. Do Couto E Silva , P. S. Drell , R. Dubois , D. Dumora (4) , C. Farnier (3) , C. Favuzzi , S. J. Fegan (2) , W. B. Focke , P. Fortin (2) , M. Frailis , L. Fuhrmann , Y. Fukazawa , S. Funk , P. Fusco , F. Gargano , D. Gasparrini , N. Gehrels , S. Germani , B. Giebels (2) , N. Giglietto , P. Giommi , F. Giordano , T. Glanzman , G. Godfrey , I. A. Grenier (1) , J. E. Grove , L. Guillemot (4) , S. Guiriec , D. Hadasch , Y. Hanabata , A. K. Harding , M. Hayashida , E. Hays , S. E. Healey , D. Horan (2) , R. E. Hughes , R. Itoh , M. S. Jackson , G. Johannesson , A. S. Johnson , W. N. Johnson , M. Kadler , T. Kamae , H. Katagiri , J. Kataoka , N. Kawai , M. Kerr , Jürgen Knödlseder (5) , M. L. Kocian , M. Kuss , J. Lande , L. Latronico , F. Longo , F. Loparco , B. Lott (4) , M. N. Lovellette , P. Lubrano , G. M. Madejski , A. Makeev , W. Max-Moerbeck , M. N. Mazziotta , W. Mcconville , 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 , I. Nestoras , K. Nilsson , N.A. Nizhelsky , P. L. Nolan , J. P. Norris , E. Nuss (3) , T. Ohsugi , R. Ojha , N. Omodei , E. Orlando , J. F. Ormes , J. Osborne , M. Ozaki , L. Pacciani , P. Padovani , C. Pagani , K. Page , D. Paneque , J. H. Panetta , D. Parent (4) , M. Pasanen , V. Pavlidou , V. Pelassa (3) , M. Pepe , M. Perri , M. Pesce-Rollins , S. Piranomonte , F. Piron (3) , C. Pittori , T.A. Porter , S. Puccetti , F. Rahoui (1) , S. Rainò , C. Raiteri , R. Rando , M. Razzano , A. Reimer , O. Reimer , T. Reposeur (4) , J. L. Richards , S. Ritz , L. S. Rochester , A. Y. Rodriguez , R. W. Romani , J. A. Ros , M. Roth , P. Roustazadeh , F. Ryde , H. F.-W. Sadrozinski , A. Sadun , D. Sanchez (2) , A. Sander , P. M. Saz Parkinson , J. D. Scargle , A. Sellerholm , C. Sgrò , M. S. Shaw , L. A. Sigua , E. J. Siskind , David Stanley Smith (4) , P. D. Smith , G. Spandre , P. Spinelli , Jean-Luc Starck (1) , M. Stevenson , G. Stratta , M. S. Strickman , D. J. Suson , H. Tajima , H. Takahashi , T. Takahashi , L. O. Takalo , T. Tanaka , J. B. Thayer , J. G. Thayer , D. J. Thompson , L. Tibaldo (1) , D. F. Torres , G. Tosti , A. Tramacere , Y. Uchiyama , T. L. Usher , V. Vasileiou , F. Verrecchia , N. Vilchez (5) , M. Villata , V. Vitale , A. P. Waite , P. Wang , B. L. Winer , K. S. Wood , T. Ylinen , J. A. Zensus , G. V. Zhekanis , M. Ziegler
A.A. Abdo
  • Function : Author
Markus Ackermann
  • Function : Author
Marco Ajello
  • Function : Author
Magnus Axelsson
  • Function : Author
Luca Baldini
  • Function : Author
Guido Barbiellini
  • Function : Author
D. Bastieri
  • Function : Author
B.M. Baughman
  • Function : Author
K. Bechtol
  • Function : Author
R. Bellazzini
  • Function : Author
B. Berenji
  • Function : Author
R.D. Blandford
  • Function : Author
E.D. Bloom
  • Function : Author
E. Bonamente
  • Function : Author
A. Borgland
  • Function : Author
J. Bregeon
A. Brez
  • Function : Author
M. Brigida
  • Function : Author
T. H. Burnett
  • Function : Author
S. Buson
  • Function : Author
G. A. Caliandro
  • Function : Author
R. A. Cameron
  • Function : Author
P. A. Caraveo
  • Function : Author
E. Cavazzuti
  • Function : Author
C. Cecchi
  • Function : Author
O. Celik
  • Function : Author
S. Chaty
A. Chekhtman
  • Function : Author
J. Chiang
  • Function : Author
S. Ciprini
  • Function : Author
R. Claus
  • Function : Author
S. Colafrancesco
  • Function : Author
L. R. Cominsky
  • Function : Author
J. Conrad
  • Function : Author
L. Costamante
  • Function : Author
S. Cutini
  • Function : Author
C. D. Dermer
  • Function : Author
A. de Angelis
  • Function : Author
F. de Palma
  • Function : Author
S. W. Digel
  • Function : Author
E. Do Couto E Silva
  • Function : Author
P. S. Drell
  • Function : Author
R. Dubois
  • Function : Author
C. Favuzzi
  • Function : Author
S. J. Fegan
W. B. Focke
  • Function : Author
M. Frailis
  • Function : Author
L. Fuhrmann
  • Function : Author
Y. Fukazawa
S. Funk
  • Function : Author
P. Fusco
  • Function : Author
F. Gargano
  • Function : Author
D. Gasparrini
  • Function : Author
N. Gehrels
  • Function : Author
S. Germani
  • Function : Author
N. Giglietto
P. Giommi
  • Function : Author
F. Giordano
  • Function : Author
T. Glanzman
  • Function : Author
G. Godfrey
  • Function : Author
J. E. Grove
  • Function : Author
S. Guiriec
  • Function : Author
D. Hadasch
Y. Hanabata
  • Function : Author
A. K. Harding
  • Function : Author
M. Hayashida
  • Function : Author
E. Hays
  • Function : Author
S. E. Healey
  • Function : Author
R. E. Hughes
  • Function : Author
R. Itoh
  • Function : Author
M. S. Jackson
  • Function : Author
G. Johannesson
  • Function : Author
A. S. Johnson
  • Function : Author
W. N. Johnson
  • Function : Author
M. Kadler
  • Function : Author
T. Kamae
  • Function : Author
H. Katagiri
  • Function : Author
J. Kataoka
  • Function : Author
N. Kawai
  • Function : Author
M. Kerr
  • Function : Author
M. L. Kocian
  • Function : Author
M. Kuss
  • Function : Author
J. Lande
  • Function : Author
L. Latronico
  • Function : Author
F. Longo
F. Loparco
  • Function : Author
B. Lott
M. N. Lovellette
  • Function : Author
P. Lubrano
  • Function : Author
G. M. Madejski
  • Function : Author
A. Makeev
  • Function : Author
W. Max-Moerbeck
M. N. Mazziotta
  • Function : Author
W. Mcconville
  • Function : Author
J. E. Mcenery
  • 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
  • Function : Author
S. Murgia
  • Function : Author
I. Nestoras
  • Function : Author
K. Nilsson
N.A. Nizhelsky
  • Function : Author
P. L. Nolan
  • Function : Author
J. P. Norris
  • Function : Author
T. Ohsugi
  • Function : Author
R. Ojha
  • Function : Author
N. Omodei
  • Function : Author
E. Orlando
  • Function : Author
J. F. Ormes
  • Function : Author
J. Osborne
  • Function : Author
M. Ozaki
L. Pacciani
  • Function : Author
P. Padovani
  • Function : Author
C. Pagani
  • Function : Author
  • PersonId : 1127818
K. Page
  • Function : Author
D. Paneque
J. H. Panetta
  • Function : Author
M. Pasanen
  • Function : Author
V. Pavlidou
  • Function : Author
M. Pepe
  • Function : Author
M. Perri
  • Function : Author
M. Pesce-Rollins
S. Piranomonte
  • Function : Author
C. Pittori
  • Function : Author
T.A. Porter
  • Function : Author
S. Puccetti
  • Function : Author
S. Rainò
  • Function : Author
C. Raiteri
  • Function : Author
R. Rando
  • Function : Author
M. Razzano
  • Function : Author
A. Reimer
O. Reimer
  • Function : Author
J. L. Richards
  • Function : Author
S. Ritz
  • Function : Author
L. S. Rochester
  • Function : Author
A. Y. Rodriguez
  • Function : Author
R. W. Romani
  • Function : Author
J. A. Ros
  • Function : Author
M. Roth
  • Function : Author
P. Roustazadeh
  • Function : Author
F. Ryde
  • Function : Author
H. F.-W. Sadrozinski
  • Function : Author
A. Sadun
  • Function : Author
A. Sander
P. M. Saz Parkinson
  • Function : Author
J. D. Scargle
  • Function : Author
A. Sellerholm
  • Function : Author
C. Sgrò
  • Function : Author
M. S. Shaw
  • Function : Author
L. A. Sigua
  • Function : Author
E. J. Siskind
  • Function : Author
P. D. Smith
  • Function : Author
G. Spandre
  • Function : Author
P. Spinelli
  • Function : Author
Jean-Luc Starck
  • Function : Author
  • PersonId : 858909
M. Stevenson
  • Function : Author
G. Stratta
  • Function : Author
M. S. Strickman
  • Function : Author
D. J. Suson
  • Function : Author
H. Tajima
  • Function : Author
H. Takahashi
  • Function : Author
T. Takahashi
  • Function : Author
L. O. Takalo
  • Function : Author
T. Tanaka
J. B. Thayer
  • Function : Author
J. G. Thayer
  • Function : Author
D. J. Thompson
  • Function : Author
D. F. Torres
  • Function : Author
G. Tosti
  • Function : Author
A. Tramacere
  • Function : Author
Y. Uchiyama
  • Function : Author
T. L. Usher
  • Function : Author
V. Vasileiou
  • Function : Author
F. Verrecchia
  • Function : Author
M. Villata
  • Function : Author
V. Vitale
A. P. Waite
  • Function : Author
P. Wang
  • Function : Author
B. L. Winer
  • Function : Author
K. S. Wood
  • Function : Author
T. Ylinen
  • Function : Author
J. A. Zensus
  • Function : Author
G. V. Zhekanis
  • Function : Author
M. Ziegler
  • Function : Author

Abstract

We have conducted a detailed investigation of the broad-band spectral properties of the \gamma-ray selected blazars of the Fermi LAT Bright AGN Sample (LBAS). By combining our accurately estimated Fermi gamma-ray spectra with Swift, radio, infra-red, optical and other hard X-ray/gamma-ray data, collected within three months of the LBAS data taking period, we were able to assemble high-quality and quasi-simultaneous Spectral Energy Distributions (SED) for 48 LBAS blazars.The SED of these gamma-ray sources is similar to that of blazars discovered at other wavelengths, clearly showing, in the usual Log $\nu $ - Log $\nu$ F$_\nu$ representation, the typical broad-band spectral signatures normally attributed to a combination of low-energy synchrotron radiation followed by inverse Compton emission of one or more components. We have used these SEDs to characterize the peak intensity of both the low and the high-energy components. The results have been used to derive empirical relationships that estimate the position of the two peaks from the broad-band colors (i.e. the radio to optical and optical to X-ray spectral slopes) and from the gamma-ray spectral index. Our data show that the synchrotron peak frequency $\nu_p^S$ is positioned between 10$^{12.5}$ and 10$^{14.5}$ Hz in broad-lined FSRQs and between $10^{13}$ and $10^{17}$ Hz in featureless BL Lacertae objects.We find that the gamma-ray spectral slope is strongly correlated with the synchrotron peak energy and with the X-ray spectral index, as expected at first order in synchrotron - inverse Compton scenarios. However, simple homogeneous, one-zone, Synchrotron Self Compton (SSC) models cannot explain most of our SEDs, especially in the case of FSRQs and low energy peaked (LBL) BL Lacs. (...)

Dates and versions

in2p3-00496030 , version 1 (29-06-2010)

Identifiers

Cite

A.A. Abdo, Markus Ackermann, Marco Ajello, Magnus Axelsson, Luca Baldini, et al.. The Spectral Energy Distribution of Fermi bright blazars. The Astrophysical Journal, 2010, 716, pp.30-70. ⟨10.1088/0004-637X/716/1/30⟩. ⟨in2p3-00496030⟩
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