2010ApJ...716...30A

Query : 2010ApJ...716...30A

2010ApJ...716...30A - Astrophys. J., 716, 30-70 (2010/June-2)

The spectral energy distribution of Fermi bright blazars.

ABDO A.A., ACKERMANN M., AGUDO I., AJELLO M., ALLER H.D., ALLER M.F., ANGELAKIS E., ARKHAROV A.A., AXELSSON M., BACH U., BALDINI L., BALLET J., BARBIELLINI G., BASTIERI D., BAUGHMAN B.M., BECHTOL K., BELLAZZINI R., BENITEZ E., BERDYUGIN A., BERENJI B., BLANDFORD R.D., BLOOM E.D., BOETTCHER M., BONAMENTE E., BORGLAND A.W., BREGEON J., BREZ A., BRIGIDA M., BRUEL P., BURNETT T.H., BURROWS D., BUSON S., CALIANDRO G.A., CALZOLETTI L., CAMERON R.A., CAPALBI M., CARAVEO P.A., CAROSATI D., CASANDJIAN J.M., CAVAZZUTI E., CECCHI C., CELIK O., CHARLES E., CHATY S., CHEKHTMAN A., CHEN W.P., CHIANG J., CHINCARINI G., CIPRINI S., CLAUS R., COHEN-TANUGI J., COLAFRANCESCO S., COMINSKY L.R., CONRAD J., COSTAMANTE L., CUTINI S., D'AMMANDO F., DEITRICK R., D'ELIA V., DERMER C.D., DE ANGELIS A., DE PALMA F., DIGEL S.W., DONNARUMMA I., DO COUTO E SILVA E., DRELL P.S., DUBOIS R., DULTZIN D., DUMORA D., FALCONE A., FARNIER C., FAVUZZI C., FEGAN S.J., FOCKE W.B., FORNE E., FORTIN P., FRAILIS M., FUHRMANN L., FUKAZAWA Y., FUNK S., FUSCO P., GOMEZ J.L., GARGANO F., GASPARRINI D., GEHRELS N., GERMANI S., GIEBELS B., GIGLIETTO N., GIOMMI P., GIORDANO F., GIULIANI A., GLANZMAN T., GODFREY G., GRENIER I.A., GRONWALL C., GROVE J.E., GUILLEMOT L., GUIRIEC S., GURWELL M.A., HADASCH D., HANABATA Y., HARDING A.K., HAYASHIDA M., HAYS E., HEALEY S.E., HEIDT J., HIRIART D., HORAN D., HOVERSTEN E.A., HUGHES R.E., ITOH R., JACKSON M.S., JOHANNESSON G., JOHNSON A.S., JOHNSON W.N., JORSTAD S.G., KADLER M., KAMAE T., KATAGIRI H., KATAOKA J., KAWAI N., KENNEA J., KERR M., KIMERIDZE G., KNODLSEDER J., KOCIAN M.L., KOPATSKAYA E.N., KOPTELOVA E., KONSTANTINOVA T.S., KOVALEV Y.Y., KOVALEV Yu.A., KURTANIDZE O.M., KUSS M., LANDE J., LARIONOV V.M., LATRONICO L., LETO P., LINDFORS E., LONGO F., LOPARCO F., LOTT B., LOVELLETTE M.N., LUBRANO P., MADEJSKI G.M., MAKEEV A., MARCHEGIANI P., MARSCHER A.P., MARSHALL F., MAX-MOERBECK W., MAZZIOTTA M.N., McCONVILLE W., McENERY J.E., MEURER C., MICHELSON P.F., MITTHUMSIRI W., MIZUNO T., MOISEEV A.A., MONTE C., MONZANI M.E., MORSELLI A., MOSKALENKO I.V., MURGIA S., NESTORAS I., NILSSON K., NIZHELSKY N.A., NOLAN P.L., NORRIS J.P., NUSS E., OHSUGI T., OJHA R., OMODEI N., ORLANDO E., ORMES J.F., OSBORNE J., OZAKI M., PACCIANI L., PADOVANI P., PAGANI C., PAGE K., PANEQUE D., PANETTA J.H., PARENT D., PASANEN M., PAVLIDOU V., PELASSA V., PEPE M., PERRI M., PESCE-ROLLINS M., PIRANOMONTE S., PIRON F., PITTORI C., PORTER T.A., PUCCETTI S., RAHOUI F., RAINO S., RAITERI C., RANDO R., RAZZANO M., REIMER A., REIMER O., REPOSEUR T., RICHARDS J.L., RITZ S., ROCHESTER L.S., RODRIGUEZ A.Y., ROMANI R.W., ROS J.A., ROTH M., ROUSTAZADEH P., RYDE F., SADROZINSKI H.F.-W., SADUN A., SANCHEZ D., SANDER A., SAZ PARKINSON P.M., SCARGLE J.D., SELLERHOLM A., SGRO C., SHAW M.S., SIGUA L.A., SISKIND E.J., SMITH D.A., SMITH P.D., SPANDRE G., SPINELLI P., STARCK J.-L., STEVENSON M., STRATTA G., STRICKMAN M.S., SUSON D.J., TAJIMA H., TAKAHASHI H., TAKAHASHI T., TAKALO L.O., TANAKA T., THAYER J.B., THAYER J.G., THOMPSON D.J., TIBALDO L., TORRES D.F., TOSTI G., TRAMACERE A., UCHIYAMA Y., USHER T.L., VASILEIOU V., VERRECCHIA F., VILCHEZ N., VILLATA M., VITALE V., WAITE A.P., WANG P., WINER B.L., WOOD K.S., YLINEN T., ZENSUS J.A., ZHEKANIS G.V. and ZIEGLER M.

Abstract (from CDS):

We have conducted a detailed investigation of the broadband spectral properties of the γ-ray selected blazars of the Fermi LAT Bright AGN Sample (LBAS). By combining our accurately estimated Fermi γ-ray spectra with Swift, radio, infra-red, optical, and other hard X-ray/γ-ray data, collected within 3 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 γ-ray sources is similar to that of blazars discovered at other wavelengths, clearly showing, in the usual log ν-log ν F_νrepresentation, the typical broadband 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 SED 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 broadband colors (i.e., the radio to optical, α_ro, and optical to X-ray, α_ox, spectral slopes) and from the γ-ray spectral index. Our data show that the synchrotron peak frequency (ν^ S ^_peak) is positioned between 10^12.5 and 10^14.5 Hz in broad-lined flat spectrum radio quasars (FSRQs) and between 10¹³ and 10¹⁷ Hz in featureless BL Lacertae objects. We find that the γ-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 SED, especially in the case of FSRQs and low energy peaked (LBL) BL Lacs. More complex models involving external Compton radiation or multiple SSC components are required to reproduce the overall SED and the observed spectral variability. While more than 50% of known radio bright high energy peaked (HBL) BL Lacs are detected in the LBAS sample, only less than 13% of known bright FSRQs and LBL BL Lacs are included. This suggests that the latter sources, as a class, may be much fainter γ-ray emitters than LBAS blazars, and could in fact radiate close to the expectations of simple SSC models. We categorized all our sources according to a new physical classification scheme based on the generally accepted paradigm for Active Galactic Nuclei and on the results of this SED study. Since the LAT detector is more sensitive to flat spectrum γ-ray sources, the correlation between ν^ S ^_peak and γ-ray spectral index strongly favors the detection of high energy peaked blazars, thus explaining the Fermi overabundance of this type of sources compared to radio and EGRET samples. This selection effect is similar to that experienced in the soft X-ray band where HBL BL Lacs are the dominant type of blazars.

Abstract Copyright: ∼

Journal keyword(s): BL Lacertae objects: general - galaxies: active - gamma rays: galaxies - quasars: general - radiation mechanisms: non-thermal

VizieR on-line data: <Available at CDS (J/ApJ/716/30): table1.dat table2.dat table3.dat table4.dat table5.dat table6.dat table7.dat table8.dat table13.dat>

Simbad objects: 123

Full paper

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Number of rows : 123

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	QSO J0017-0512	Bla	00 17 35.8173230832	-05 12 41.768611560				17.60		~	127	1
2	KUV 00311-1938	BLL	00 33 34.3800569400	-19 21 33.134193864				16.6		~	125	0
3	QSO B0048-09	BLL	00 50 41.3172421464	-09 29 05.210474100	16.74	16.39	16.22	16.14		~	480	2
4	QSO B0048-071	BLL	00 51 08.20982093	-06 50 02.2292452		19.0	19.5	19.07		~	146	1
5	9Y-MST J0100+0746	Bla	01 00 20.7886	+07 45 51.423				21.3		~	41	2
6	QSO B0109+224	BLL	01 12 05.8247044608	+22 44 38.785880796		16.00	15.66	15.47		~	373	2
7	QSO B0116-219	Bla	01 18 57.26217841	-21 41 30.1402631		19.40	19.0	19.37		~	144	1
8	QSO B0118-272	BLL	01 20 31.6628068344	-27 01 24.636341064		15.89	15.56	15.49		~	288	1
9	1RXS J013632.9+390556	BLL	01 36 32.5983798936	+39 05 59.199517428				15.5		~	146	2
10	6C 013354+473615	Bla	01 36 58.59480326	+47 51 29.1000720			19.50	19.25	15.21	~	537	1
11	ICRF J014433.5+270503	BLL	01 44 33.55384903	+27 05 03.1179726				18.6		~	104	1
12	QSO B0142-278	Bla	01 45 03.3949333872	-27 33 34.327137060		19.0	19.0	17.43		~	149	1
13	QSO B0202-172	Bla	02 04 57.67433267	-17 01 19.8408671		18.18	18	17.19		~	263	1
14	QSO B0208-512	BLL	02 10 46.2004407600	-51 01 01.893013392		17.10	16.93	14.82		~	485	1
15	QSO J0217+0144	Bla	02 17 48.95475095	+01 44 49.6990271		16.74	16.09	18.51	13.29	~	455	1
16	6C 021803+354230	BLL	02 21 05.4920852208	+35 56 13.848581904		20.0	20.0	19.60		~	603	3
17	3C 66A	BLL	02 22 39.6114771888	+43 02 07.799534304		15.71	15.21	14.5		~	942	2
18	QSO B0227-369	Bla	02 29 28.44905708	-36 43 56.8223412			19.0	20.4		~	113	1
19	4C 28.07	Bla	02 37 52.40567519	+28 48 08.9899986			19.30	16.99		~	654	1
20	QSO B0235+1624	BLL	02 38 38.93010450	+16 36 59.2745528		16.46	15.50	15.92		~	1614	2
21	QSO B0244-470	Bla	02 46 00.1179456480	-46 51 17.232749496			18.5	17.9		~	104	1
22	PKS J0303-2407	BLL	03 03 26.5025589984	-24 07 11.426291220		16.55	16.18			~	249	1
23	QSO B0332-403	BLL	03 34 13.65448823	-40 08 25.3979928	18.54	18.35	17.87	17.5		~	349	1
24	QSO B0347-211	Bla	03 49 57.82667348	-21 02 47.7416093		20.48	21.10	20.297		~	135	1
25	QSO B0405-385	Bla	04 06 59.03533781	-38 26 28.0423651		19.55	18.0			~	250	2
26	ACT-S J041313-533157	Bla	04 13 13.4752495752	-53 32 00.554079840				18.1		~	64	4
27	QSO B0420-0127	Bla	04 23 15.80072217	-01 20 33.0656073		17.50	17.00	16.28		~	1263	3
28	WISEA J042840.41-375619.3	BLL	04 28 40.4241894720	-37 56 19.580735832		18.96	19.0	17.21		~	343	1
29	MCG+01-12-009	Bla	04 33 11.0956735296	+05 21 15.619461552		15.72	15.05	10.08		~	2099	2
30	PKS J0449-4350	BLL	04 49 24.6981911928	-43 50 08.960970948	14.95	17.52	15.24	16.27		~	190	1
31	QSO J0457-2324	Bla	04 57 03.1791422424	-23 24 52.021129572		18.85	18.5	16.56		~	435	1
32	RX J0507.9+6737	BLL	05 07 56.1631660632	+67 37 24.225299292				17.2		~	196	1
33	QSO B0516-621	BLL	05 16 44.92617055	-62 07 05.3894029	18.50	18.09	17.85	17.46		~	139	1
34	QSO J0530+13	Bla	05 30 56.41674741	+13 31 55.1494688			20.00	19.35		~	1004	1
35	QSO B0537-441	BLL	05 38 50.36155950	-44 05 08.9390233		15.77	16.48	16		~	924	2
36	ICRF J065422.0+504223	BLL	06 54 22.09315566	+50 42 23.8731366						~	114	1
37	6C 065044+451825	Bla	06 54 23.71365373	+45 14 23.5454988			21.00	19.76		~	157	1
38	2MASS J07003124-6610452	BLL	07 00 31.2536435688	-66 10 45.229749384	16.38	15.99	15.89			~	86	3
39	ICRF J071243.6+503322	BLL	07 12 43.6836455760	+50 33 22.708727208				18.68		~	108	2
40	ICRF J071355.6+193500	Bla	07 13 55.67917496	+19 35 00.4089341				18		~	106	3
41	7C 071604.59+331243.00	BLL	07 19 19.41966120	+33 07 09.7087082		17.66	17.05			~	130	1
42	8C 0716+714	BLL	07 21 53.4482942664	+71 20 36.363846516		15.5	15.50	14.27		~	1388	1
43	QSO J0730-116	Bla	07 30 19.11247452	-11 41 12.6006642			20.30	20.3		~	323	1
44	QSO J0738+1742	BLL	07 38 07.39375312	+17 42 18.9981506		16.76	16.22	15.78		~	1045	1
45	7C 081451.89+423206.00	BLL	08 18 15.99961476	+42 22 45.4148987		18.88	18.18	17.81		~	429	1
46	4C 56.16A	Bla	08 24 47.23636459	+55 52 42.6693589		18.52	18.19	17.82		~	216	1
47	PG 0851+202	BLL	08 54 48.8749846272	+20 06 30.639583620		15.649	15.146	15.446		~	2513	1
48	4C 01.24B	Bla	09 09 10.09159883	+01 21 35.6176206		17.63	17.29	17.04		~	454	2
49	ICRF J090939.8+020005	BLL	09 09 39.8480034240	+02 00 05.263770168		20.23	19.68	18.62		~	82	1
50	6C 091740+445437	Bla	09 20 58.45848666	+44 41 53.9850947		18.40	18.16	16.55		~	407	1
51	QSO J0948+0022	Bla	09 48 57.32005819	+00 22 25.5596984		18.85	18.61	18.17		~	350	2
52	4C 55.17	Bla	09 57 38.1839604096	+55 22 57.754950636		18.24	17.89			~	459	1
53	SDSS J101241.37+243923.4	Bla	10 12 41.3779909824	+24 39 23.394747816		19.77	19.58	19.4		~	82	1
54	Ton 490	Bla	10 13 53.42877250	+24 49 16.4406795		16.59	16.57	15.85		~	200	1
55	RX J1015.0+4926	BLL	10 15 04.1396533776	+49 26 00.706055496		16.56	16.15	14.58		~	400	3
56	QSO J1016+0513	Bla	10 16 03.13647602	+05 13 02.3413146		20.26	19.83	20		~	162	1
57	6C 103031+610629	Bla	10 33 51.4290959304	+60 51 07.334442756		19.31	18.86	20.24		~	195	2
58	2E 1050.7+4946	ClG	10 53 44.1	+49 29 56						~	58	1
59	7C 105047.29+494553.00	BLL	10 53 44.1256067376	+49 29 55.999047156		18.70	17.76	13.8		~	155	2
60	87GB 105148.6+222705	BLL	10 54 30.6250887672	+22 10 54.796074852	17.67	17.39	17.20	17.1		~	68	1
61	4C 01.28	BLL	10 58 29.60520810	+01 33 58.8237454		18.74	18.28	16.68		~	828	2
62	RX J1058.6+5628	BLL	10 58 37.7276569824	+56 28 11.207405028		16.80	16.31	14.58		~	232	1
63	QSO B1057-797	BLL	10 58 43.30979475	-80 03 54.1598058		19.08		17.31		~	211	1
64	Z 184-50	BLL	11 04 27.3140835504	+38 12 31.798495872		13.50	12.90	8.31		~	2841	1
65	QSO J1130-1449	Bla	11 30 07.0523452128	-14 49 27.388021944		17.17	16.90	16	16.97	~	739	1
66	QSO B1144-3755	BLL	11 47 01.37071212	-38 12 11.0235229		19.03	16.2	16.72		~	320	1
67	Ton 599	Bla	11 59 31.83391383	+29 14 43.8268224		14.80	14.41	17.652	13.39	~	989	1
68	RX J1217.8+3007	BLL	12 17 52.0819904040	+30 07 00.634936872		16.07	15.62	13.47		G7	516	1
69	7C 1219+2830	BLL	12 21 31.6904439888	+28 13 58.500308172		16.81	16.11	14.24		~	924	1
70	3C 273	BLL	12 29 06.6998257176	+02 03 08.597629980		13.05	14.830	14.11		~	6022	1
71	QSO J1246-2547	Bla	12 46 46.80203943	-25 47 49.2889822		17.65	17.41	16.96	15.5	~	314	1
72	LB 2449	BLL	12 48 18.7847605224	+58 20 28.717260720		16.10	15.78	15.19		~	215	1
73	1RXS J125311.9+530105	BLL	12 53 11.9204702472	+53 01 11.737422696		18.07	17.51	16.4		~	143	1
74	3C 279	Bla	12 56 11.16657958	-05 47 21.5251510		18.01	17.75	15.87		~	3205	2
75	US 371	BLL	13 10 28.66385420	+32 20 43.7828340		15.61	15.24	17.91		~	917	1
76	3C 286	Sy1	13 31 08.2883506368	+30 30 32.960091564		17.51	17.25			~	4558	2
77	QSO J1332-0509	Bla	13 32 04.46468002	-05 09 43.3058094			18.5	18.37		~	169	1
78	ICRF J133353.7+505735	Bla	13 33 53.7823	+50 57 35.914		20.09	19.71	19.6		~	91	1
79	QSO B1352-104	Bla	13 54 46.51868700	-10 41 02.6561979		18.20	18.4			~	175	1
80	PG 1424+240	BLL	14 27 00.3917926224	+23 48 00.037510776	14.52	14.34	14.95	14.5		~	420	1
81	QSO J1457-3539	BLL	14 57 26.71171449	-35 39 09.9716148		17.95	19.50	18.93		~	167	1
82	QSO B1502+1041	Bla	15 04 24.97978391	+10 29 39.1985309		18.97	18.56	18.94		~	634	1
83	4C -05.64	Bla	15 10 53.59142427	-05 43 07.4175000		17.44	17.21			~	249	1
84	QSO J1512-0906	Bla	15 12 50.53293048	-09 05 59.8297908		16.74	16.54			~	1409	1
85	ESO 514-1	BLL	15 17 41.8134049824	-24 22 19.482207024		15.13	14.00	13.95		~	815	3
86	7C 1520+3154	Bla	15 22 09.99173254	+31 44 14.3819383		20.45	19.89	19.87		~	230	1
87	QSO B1542+614	BLL	15 42 56.9436243096	+61 29 55.346749080		16.9	16.25	16.6		~	159	1
88	QSO B1551+130	Bla	15 53 32.6978115648	+12 56 51.713513052		18.05	17.65	17.1		~	182	1
89	PG 1553+113	BLL	15 55 43.0440048528	+11 11 24.365649948	14.91	14.72	14.57	13.99		~	672	1
90	QSO B1622-253	Bla	16 25 46.89164287	-25 27 38.3268734		21.3	20.6	19.60		~	381	1
91	3EG J1627-2419	SFR	16 26 47.9992676	-24 30 00.000000						~	38	1
92	PMN J1626-2426	rG	16 27 00.01	-24 26 40.6						~	24	1
93	4C 38.41	Bla	16 35 15.49297809	+38 08 04.5005995		18.14	17.97	17.25		~	906	1
94	6C 163852+395305	Bla	16 40 29.63277140	+39 46 46.0284071		18.4	19.37	18.75		~	336	2
95	3C 345	Bla	16 42 58.80997043	+39 48 36.9939552		16.81	16.59	16.84		~	1808	3
96	Z 225-7	BLL	16 53 52.21668403	+39 45 36.6088754	14.09	14.15	13.29	8.26		~	2304	2
97	QSO B1717+178	BLL	17 19 13.04848035	+17 45 06.4371847		20.10	19.1	17.28		~	247	1
98	4C 09.57	BLL	17 51 32.81857326	+09 39 00.7284066		17.46	16.78	15.57		~	1007	1
99	1RXS J180043.6+782806	BLL	18 00 45.6838528560	+78 28 04.018028016		16.4	15.90	16.134		~	793	1
100	4C 66.20	SyG	18 46 49.770	+66 57 45.43		18				~	32	1
101	QSO J1848+3219	Bla	18 48 22.08857099	+32 19 02.6037977				18.79		~	163	2
102	6C 184914+670207	Bla	18 49 16.07228484	+67 05 41.6802599			16.90	17.45		~	305	2
103	QSO B1908-202	Bla	19 11 09.65289294	-20 06 55.1090664		18.21		18.14		~	306	1
104	[VV2006] J192332.2-210433	Bla	19 23 32.18981392	-21 04 33.3331234		15.32	17.50	16.70		~	180	3
105	QSO B1959+650	BLL	19 59 59.8520303688	+65 08 54.652536492			12.8	11.21		~	699	2
106	PKS J2009-4849	BLL	20 09 25.3903899240	-48 49 53.725051056		15.75	12.81	11.41		~	604	1
107	PSR J2017+0603	Psr	20 17 22.7048	+06 03 05.585						~	120	1
108	QSO B2022-077	BLL	20 25 40.6602562440	-07 35 52.688047128		18.5				~	234	3
109	QSO B2052-474	Bla	20 56 16.35980507	-47 14 47.6277179		18.29	19.1	18.07		~	341	1
110	QSO B2136-428	BLL	21 39 24.1733820912	-42 35 20.465859048		16.50	16.2	15.7		~	97	1
111	QSO B2141+1730	Bla	21 43 35.54456275	+17 43 48.7875890		15.91	15.73	15.17		~	418	1
112	QSO B2144+093	Bla	21 47 10.16296704	+09 29 46.6722487		18.72	18.54	16.51		~	225	1
113	ICRF J215728.8+312701	Bla	21 57 28.82388667	+31 27 01.3517551				20.11		~	114	1
114	PKS J2158-3013	BLL	21 58 52.0652249880	-30 13 32.118447792		13.36	13.09	12.62		~	1829	1
115	NAME BL Lac	BLL	22 02 43.2913536816	+42 16 39.979416792		15.66	14.72			~	2397	1
116	QSO B2201+1711	BLL	22 03 26.89368237	+17 25 48.2477620			19.50	14.76		~	221	1
117	QSO B2204-54	Bla	22 07 43.73329058	-53 46 33.8199643		18.45	18.0	18.20		~	178	1
118	QSO B2227-0848	Bla	22 29 40.08433313	-08 32 54.4355294		17.80	17.41	17.81		~	391	1
119	4C 11.69	Bla	22 32 36.40890093	+11 43 50.9040592		17.75	17.33			~	1205	2
120	3C 454.3	Bla	22 53 57.7480438728	+16 08 53.561508864		16.57	16.10	15.22		~	3004	2
121	ICRF J232517.8+395736	BLL	23 25 17.8701567192	+39 57 36.512873352		17.8	17.80	17.8		~	83	1
122	QSO B2325+093	Bla	23 27 33.58055652	+09 40 09.4627185		18.5	19.5	18.26		~	211	1
123	QSO J2345-1555	BLL	23 45 12.4622049264	-15 55 07.836801888		19.21		18.48		~	202	1

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