1997A&A...325...19C


Query : 1997A&A...325...19C

1997A&A...325...19C - Astronomy and Astrophysics, volume 325, 19-26 (1997/9-1)

A statistical method of testing the gamma ray emission mechanisms of blazars.

CHI X. and YOUNG E.C.M.

Abstract (from CDS):

Models for generation of high energy gamma rays in blazars can be classified into two types of mechanisms in the jet comoving frame: relativistic electron scattering on the internal photons or magnetic field (virtual photons) (SIP) and on the external photons (SEP). These two mechanisms are known to result in a significant difference in the beaming effect. In this work, we propose a statistical test for the two types of mechanisms based on the beaming difference. The random variable is taken to be the K-corrected gamma ray to radio flux ratio and its distribution is shown to be a power-law with an index being model-dependent. The feasibility of such a test is investigated with a limited sample of data which are complied from the EGRET gamma ray survey, low resolution radio surveys and a VLBI radio survey. A correlation study indicates that the VLBI data are more suitable for the purpose than the low resolution data. Due to the limited amount of available data, the current test result is not statistically significant to discriminate the two emission mechanisms. Future generation of high energy gamma ray telescopes are needed to produce a larger sample of data of gamma ray blazars and their simultaneous observations with VLBI are called.

Abstract Copyright:

Journal keyword(s): gamma rays: theory - galaxies: active - quasars: general - radiation mechanisms: nonthermal

Simbad objects: 46

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Number of rows : 46
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 QSO B0130-17 QSO 01 32 43.4876969712 -16 54 48.522844980   18.75 18.44 15.44   ~ 199 1
2 QSO B0208-512 BLL 02 10 46.2004407600 -51 01 01.893013392   17.10 16.93 14.82   ~ 408 1
3 3C 66A BLL 02 22 39.6114771888 +43 02 07.799534304   15.71 15.21 14.5   ~ 834 1
4 4C 28.07 QSO 02 37 52.4057664048 +28 48 08.990026884     18.5 16.99   ~ 550 1
5 QSO B0235+1624 BLL 02 38 38.9300958576 +16 36 59.276150136   16.46 15.50 15.92   ~ 1450 2
6 QSO B0420-0127 QSO 04 23 15.8007747432 -01 20 33.063518580   17.50 17.00 16.28   ~ 1128 3
7 4C -02.19 QSO 05 01 12.8099394264 -01 59 14.258630148   19.1 18.4 19.04   ~ 544 1
8 QSO B0521-365 BLL 05 22 57.9841341216 -36 27 30.847204512   15.26 14.62 14.48   ~ 773 2
9 QSO J0530+13 Bla 05 30 56.4168902136 +13 31 55.151893344     20.0 19.35   ~ 913 1
10 QSO B0537-441 BLL 05 38 50.3617339512 -44 05 08.940591924   15.77 16.48 16   ~ 829 2
11 8C 0716+714 BLL 07 21 53.4482942664 +71 20 36.363846516   15.5 14.17 14.27   ~ 1206 1
12 QSO J0738+1742 BLL 07 38 07.3935719136 +17 42 18.998218764   16.76 16.22 15.78   ~ 924 1
13 QSO B0805-077 QSO 08 08 15.5358771816 -07 51 09.885045384     19.5 16.71   ~ 231 1
14 7C 080458.39+495918.00 QSO 08 08 39.6660148632 +49 50 36.535256700   19.55 19.18 18.34   ~ 338 2
15 7C 082754.29+242103.00 QSO 08 30 52.0861432224 +24 10 59.822369580   17.62 17.26 16.30   ~ 485 1
16 QSO B0829+047 BLL 08 31 48.8770033992 +04 29 39.086842884   17.10 16.4 14.55   ~ 439 2
17 4C 71.07 QSO 08 41 24.3652863600 +70 53 42.171665460     16.5 16.8   ~ 727 1
18 6C 091740+445437 QSO 09 20 58.4583974280 +44 41 53.986407072   18.40 18.16 16.55   ~ 346 1
19 4C 55.17 QSO 09 57 38.1839604096 +55 22 57.754950636   18.24 17.89     ~ 394 1
20 6C 095456+654857 BLL 09 58 47.2451872176 +65 33 54.819354600     17.0 15.75   ~ 650 1
21 Mrk 421 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2512 1
22 QSO J1130-1449 QSO 11 30 07.0523452128 -14 49 27.388021944   17.17 16.90 16 16.97 ~ 657 1
23 Ton 599 QSO 11 59 31.8338889192 +29 14 43.826803116   14.80 14.41 17.652 13.39 ~ 850 1
24 4C 21.35 QSO 12 24 54.4583146056 +21 22 46.385507388   17.56 17.50 18.2   ~ 617 2
25 3C 273 BLL 12 29 06.6998257176 +02 03 08.597629980   13.05 14.830 14.11   ~ 5555 1
26 4C -02.55 QSO 12 32 00.0159535440 -02 24 04.793069304   17.41 17.06 16.4   ~ 401 1
27 3C 279 Bla 12 56 11.1663795384 -05 47 21.528432492   18.01 17.75 15.87   ~ 2863 2
28 QSO B1313-333 QSO 13 16 07.9862714376 -33 38 59.173382076   18.04 20.0 17.23   ~ 235 1
29 4C 52.27 QSO 13 19 46.1981104392 +51 48 05.778192240   17.35 16.89     ~ 128 1
30 QSO B1331+170 QSO 13 33 35.7827544072 +16 49 04.013500728   16.84 16.71 16.41   ~ 426 0
31 QSO B1406-076 QSO 14 08 56.4814523928 -07 52 26.671164168   20.3 18.4     ~ 284 1
32 QSO J1512-0906 Bla 15 12 50.5330369584 -09 05 59.830296360   16.74 16.54     ~ 1223 1
33 4C 15.54 BLL 16 07 06.4307774688 +15 51 34.493596812   20.15 19.49 17.5   ~ 151 2
34 4C 10.45 QSO 16 08 46.2032041032 +10 29 07.779419592   18.5 18.0 18.03   ~ 353 1
35 6C 161147+342017 QSO 16 13 41.0642858568 +34 12 47.910181572   17.98 17.46 17.07   ~ 598 1
36 QSO B1622-253 QSO 16 25 46.8886080600 -25 27 38.336613804   21.3 20.6 19.60   ~ 322 1
37 4C 38.41 QSO 16 35 15.4928147784 +38 08 04.499799360   18.14 17.97 17.25   ~ 799 1
38 QSO B1730-130 QSO 17 33 02.7055087032 -13 04 49.545516612   18 18.5 18.78 17.39 ~ 1058 1
39 4C 51.37 Bla 17 40 36.9781162752 +52 11 43.408067208   18.16 18.5 16.73   ~ 380 1
40 QSO B1908-202 QSO 19 11 09.6526857480 -20 06 55.109271780   18.21   18.14   ~ 252 0
41 QSO B1933-400 QSO 19 37 16.2170885184 -39 58 01.550896824   18.15 19 17.43   ~ 177 2
42 QSO B2052-474 QSO 20 56 16.3597417176 -47 14 47.625469512   18.29 19.1 18.07   ~ 284 1
43 QSO B2209+236 QSO 22 12 05.9664991416 +23 55 40.543886604   19   19.69   ~ 202 1
44 4C 11.69 QSO 22 32 36.4089639768 +11 43 50.904601176   17.75 17.33     ~ 1034 2
45 3C 454.3 Bla 22 53 57.7480438728 +16 08 53.561508864   16.57 16.10 15.22   ~ 2661 2
46 QSO B2356+196 QSO 23 58 46.0850683944 +19 55 20.303702724     18.0 17.37   ~ 113 1

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2022.05.22-10:01:01

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