The Parsec-Scale Structure of the Newer TeV Blazars

被引：6

作者：

Piner, B. Glenn ^{[1
]}

Edwards, Philip G. ^{[2
]}

机构：

[1] Whittier Coll, Dept Phys & Astron, Whittier, CA 90601 USA

[2] CSIRO Astron & Space Sci, Epping, NSW, Australia

来源：

INNERMOST REGIONS OF RELATIVISTIC JETS AND THEIR MAGNETIC FIELDS | 2013年 / 61卷

关键词：

BL-LACERTAE OBJECTS; GAMMA-RAY EMISSION; LAC OBJECTS; RADIO; JET; VARIABILITY; SAMPLE; UNIFICATION; RESOLUTION; FLARE;

D O I：

10.1051/epjconf/20136104021

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We expand our previous studies of the parsec-scale structure of TeV blazars by presenting first-epoch images from VLBA monitoring of ten newer TeV HBLs. All ten sources were successfully detected and imaged, and all showed a one-sided core-jet structure. Many display a morphology common to TeV HBLs: a short, collimated jet followed by a transition to low surface brightness extended emission with a much broader opening angle. The newly detected TeV HBLs tend to be fainter in the radio; the median core flux density was 22 mJy, and the median brightness temperature was 8 x 109 K. The brightness temperatures are well below the equipartition limit, and thus the VLBI cores do not require strong beaming, consistent with the modest values of Doppler and Lorentz factors found in the VLBI jets of TeV HBLs by other studies, and contrasting with the strong beaming generally required by the TeV emission. We study the full sample of TeV HBLs that have been observed with VLBI, and find a correlation between TeV flux and VLBI core brightness temperature, suggesting different but correlated beaming factors for the TeV and radio emission. We present a discussion of these observations in the context of velocity structures in the jets of the TeV HBLs.

引用

页数：5

共 34 条

[1] An exceptional very high energy gamma-ray flare of PKS 2155-304 [J].

Aharonian, F. ;

Akhperjanian, A. G. ;

Bazer-Bachi, A. R. ;

Behera, B. ;

Beilicke, M. ;

Benbow, W. ;

Berge, D. ;

Bernloehr, K. ;

Boisson, C. ;

Bolz, O. ;

Borrel, V. ;

Boutelier, T. ;

Braun, I. ;

Brion, E. ;

Brown, A. M. ;

Buehler, R. ;

Buesching, I. ;

Bulik, T. ;

Carrigan, S. ;

Chadwick, P. M. ;

Clapson, A. C. ;

Chounet, L.-M. ;

Coignet, G. ;

Cornils, R. ;

Costamante, L. ;

Degrange, B. ;

Dickinson, H. J. ;

Djannati-Atai, A. ;

Domainko, W. ;

Drury, L. O'C. ;

Dubus, G. ;

Dyks, J. ;

Egberts, K. ;

Emmanoulopoulos, D. ;

Espigat, P. ;

Farnier, C. ;

Feinstein, F. ;

Fiasson, A. ;

Foerster, A. ;

Fontaine, G. ;

Funk, Seb. ;

Funk, S. ;

Fuessling, M. ;

Gallant, Y. A. ;

Giebels, B. ;

Glicenstein, J. F. ;

Glueck, B. ;

Goret, P. ;

Hadjichristidis, C. ;

Hauser, D. .

ASTROPHYSICAL JOURNAL, 2007, 664 (02) :L71-L74

[2] Variable very high energy γ-ray emission from Markarian 501 [J].

Albert, J. ;

Aliu, E. ;

Anderhub, H. ;

Antoranz, P. ;

Armada, A. ;

Baixeras, C. ;

Barrio, J. A. ;

Bartko, H. ;

Bastieri, D. ;

Becker, J. K. ;

Bednarek, W. ;

Berger, K. ;

Bigongiari, C. ;

Biland, A. ;

Bock, R. K. ;

Bordas, P. ;

Bosch-Ramon, V. ;

Bretz, T. ;

Britvitch, I. ;

Camara, M. ;

Carmona, E. ;

Chilingarian, A. ;

Coarasa, J. A. ;

Commichau, S. ;

Contreras, J. L. ;

Cortina, J. ;

Costado, M. T. ;

Curtef, V. ;

Danielyan, V. ;

Dazzi, F. ;

De Angelis, A. ;

Delgado, C. ;

de los Reyes, R. ;

De Lotto, B. ;

Domingo-Santamaria, E. ;

Dorner, D. ;

Doro, M. ;

Errando, M. ;

Fagiolini, M. ;

Ferenc, D. ;

Fernandez, E. ;

Firpo, R. ;

Flix, J. ;

Fonseca, M. V. ;

Font, L. ;

Fuchs, M. ;

Galante, N. ;

Garcia-Lopez, R. J. ;

Garczarczyk, M. ;

Gaug, M. .

ASTROPHYSICAL JOURNAL, 2007, 669 (02) :862-883

[3] The simultaneous low state spectral energy distribution of 1ES 2344+514 from radio to very high energies [J].

Aleksic, J. ;

Antonelli, L. A. ;

Antoranz, P. ;

Asensio, M. ;

Backes, M. ;

de Almeida, U. Barres ;

Barrio, J. A. ;

Bednarek, W. ;

Berger, K. ;

Bernardini, E. ;

Biland, A. ;

Blanch, O. ;

Bock, R. K. ;

Boller, A. ;

Bonnefoy, S. ;

Bonnoli, G. ;

Tridon, D. Borla ;

Bretz, T. ;

Carmona, E. ;

Carosi, A. ;

Fidalgo, D. Carreto ;

Colin, P. ;

Colombo, E. ;

Contreras, J. L. ;

Cortina, J. ;

Cossio, L. ;

Covino, S. ;

Da Vela, P. ;

Dazzi, F. ;

De Angelis, A. ;

De Caneva, G. ;

De Lotto, B. ;

Mendez, C. Delgado ;

Doert, M. ;

Dominguez, A. ;

Prester, D. Dominis ;

Dorner, D. ;

Doro, M. ;

Eisenacher, D. ;

Elsaesser, D. ;

Ferenc, D. ;

Fonseca, M. V. ;

Font, L. ;

Fruck, C. ;

Lopez, R. J. Garcia ;

Garczarczyk, M. ;

Terrats, D. Garrido ;

Gaug, M. ;

Giavitto, G. ;

Godinovic, N. .

ASTRONOMY & ASTROPHYSICS, 2013, 556

[4] RAPID TeV VARIABILITY IN BLAZARS AS A RESULT OF JET-STAR INTERACTION [J].

Barkov, M. V. ;

Aharonian, F. A. ;

Bogovalov, S. V. ;

Kelner, S. R. ;

Khangulyan, D. .

ASTROPHYSICAL JOURNAL, 2012, 749 (02)

[5] Implications of very rapid TeV variability in blazars [J].

Begelman, Mitchell C. ;

Fabian, Andrew C. ;

Rees, Martin J. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2008, 384 (01) :L19-L23

[6]

Blasi M. G., 2013, A A IN PRESS

[7] Simultaneous radio-interferometric and high-energy TeV observations of the γ-ray blazar Mkn 421 [J].

Charlot, P. ;

Gabuzda, D. C. ;

Sol, H. ;

Degrange, B. ;

Piron, F. .

ASTRONOMY & ASTROPHYSICS, 2006, 457 (02) :455-465

[8]

Chiaberge M, 2000, ASTRON ASTROPHYS, V358, P104

[9] Decelerating flows in TeV blazars: A resolution to the BL Lacertae-FR I unification problem [J].

Georganopoulos, M ;

Kazanas, D .

ASTROPHYSICAL JOURNAL, 2003, 594 (01) :L27-L30

[10] Structured jets in TeVBL Lac objects and radiogalaxies - Implications for the observed properties [J].

Ghisellini, G ;

Tavecchio, F ;

Chiaberge, M .

ASTRONOMY & ASTROPHYSICS, 2005, 432 (02) :401-410

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