J/ApJ/709/1407 SED of the Fermi blazars (Li+, 2010)
The spectral energy distributions of the Fermi blazars and connection among
low-energy peaked BL Lacertae, high-energy peaked BL Lacertae, and flat spectrum
radio quasars.
Li H.Z., Xie G.Z., Yi T.F., Chen L.E., Dai H.
<Astrophys. J., 709, 1407-1411 (2010)>
=2010ApJ...709.1407L 2010ApJ...709.1407L
ADC_Keywords: BL Lac objects ; QSOs ; Energy distributions ; Gamma rays ;
X-ray sources ; Active gal. nuclei
Keywords: galaxies: active - galaxies: fundamental parameters - quasars: general
Abstract:
We complied the optical, X-ray, and γ-ray data for 54 Fermi
blazars and studied the relationship between the broadband spectral
index αox and αxγ, as well as the relationship
between the intrinsic composite spectral indices αxox and
αγxγ for this sample. The relationship between
αxox and αγxγ reveals that flat spectrum
radio quasars and low-energy peaked BL Lacertae follow a continuous
trend, which is consistent with previous results, whereas high-energy
peaked BL Lacertae follow a separate distinct trend. Even so, a
unified scheme is also revealed from
αxox-αγxγ diagram when all three
subclasses of blazars are considered.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 125 54 The sample of Fermi blazars with both αx
and αγ
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See also:
J/ApJS/194/29 : Observations of blazars at 15GHz (Richards+, 2011)
J/ApJ/700/597 : FERMI LAT detected blazars (Abdo+, 2009)
J/ApJS/183/46 : Fermi/LAT bright gamma-ray source list (0FGL) (Abdo+, 2009)
J/ApJ/657/706 : EGRET blazar gamma-ray spectrum (Nandikotkur+, 2007)
J/A+A/375/739 : Hard X-ray properties of blazars (Donato+, 2001)
J/ApJ/525/127 : RGB sample of BL Lacertae objects (Laurent-Muehleisen+, 1999)
J/A+A/311/384 : ROSAT observations of BL Lacertae objects (Lamer+ 1996)
J/A+A/281/355 : X-ray AGN content of Molonglo 408MHz survey (Brinkmann+ 1994)
J/other/PASAu/10.310 : Parkes-Tidbinbilla radio sources (Duncan+ 1993)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [0FGL]
6- 17 A12 --- 0FGL Fermi/LAT designation (JHHMM.m+DDMM); from
Abdo et al., 2009, Cat. J/ApJ/700/597
19- 23 F5.3 --- z ? Redshift
25- 29 F5.2 mJy Fo V-band optical flux (F0)
31- 33 A3 --- r_Fo Reference for F0 (1)
35- 39 F5.2 uJy Fx 1keV X-ray flux (Fx)
41- 43 A3 --- r_Fx Reference for Fx (1)
45- 50 F6.4 nJy Fg γ-ray flux at 100MeV, (Fγ)
52- 54 A3 --- r_Fg [A09] Reference for γ-ray data (1)
56- 59 F4.2 --- aox Two-point spectral index αox
61- 65 F5.2 --- axox Composite spectral index αxox
67- 80 A14 --- OName Other name
82- 85 A4 --- Class Class of the source (2)
87- 91 F5.2 --- ax Spectral index for the X-ray band (αx)
93- 96 F4.2 --- e_ax ? ax uncertainty
98-100 A3 --- r_ax Reference for ax (1)
102-105 F4.2 --- ag Spectral index for the γ-ray band
(αγ)
107-110 F4.2 --- e_ag ag uncertainty
112-114 A3 --- r_ag [A09] Reference for γ-ray data (1)
116-119 F4.2 --- axg Spectral index αxγ
121-125 F5.2 --- agxg Composite spectral index αγxγ
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Note (1): Reference as follows:
A09 = Abdo et al. 2009, Cat. J/ApJ/700/597;
B94 = Brinkmann et al. 1994, Cat. J/A+A/281/355;
C97 = Comastri et al. 1997ApJ...480..534C 1997ApJ...480..534C;
D93 = Duncan et al. 1993, Cat. J/other/PASAu/10.310;
D01 = Donato et al. 2001, Cat. J/A+A/375/739;
L96 = Lamer et al. 1996, Cat. J/A+A/311/384;
F98 = Fossati et al. 1998MNRAS.299..433F 1998MNRAS.299..433F;
L99 = Laurent-Muehleisen et al. 1999, Cat. J/ApJ/525/127;
S98 = Siebert et al. 1998MNRAS.301..261S 1998MNRAS.301..261S.
Note (2): Blazar class as follows:
HBL = high-energy peaked BL Lacs,
LBL = low-energy peaked BL Lacs,
FSQR = flat spectrum radio quasars
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History:
From electronic version of the journal
(End) Emmanuelle Perret [CDS] 09-Mar-2012