A simultaneous 3.5 and 1.3 mm polarimetric survey of active galactic nuclei in the northern sky

被引：50

作者：

Agudo, I. ^{[1
,2
]}

Thum, C. ^{[3
]}

Gomez, J. L. ^{[1
]}

Wiesemeyer, H. ^{[4
]}

机构：

[1] Inst Astrofis Andalucia CSIC, Granada 18080, Spain

[2] Boston Univ, Inst Astrophys Res, Boston, MA 02215 USA

[3] Inst Radio Astron Millimetr, Granada 18012, Spain

[4] Max Planck Inst Radioastron, D-53121 Bonn, Germany

来源：

ASTRONOMY & ASTROPHYSICS | 2014年 / 566卷

基金：

美国国家科学基金会;

关键词：

galaxies: active; galaxies: jets; quasars: general; BL Lacertae objects: general; polarization; surveys; BL-LACERTAE OBJECTS; COMPTON CATASTROPHE SCENARIO; RAY BLAZAR CANDIDATES; IRAM 30-M TELESCOPE; POLARIZATION VARIABILITY; EXTRAGALACTIC SOURCES; 3C; 454.3; ELECTROMAGNETIC-SPECTRUM; FARADAY-ROTATION; VLBA EXPERIMENTS;

D O I：

10.1051/0004-6361/201423366

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Context. Short millimeter observations of radio-loud active galactic nuclei (AGN) offer an excellent opportunity to study the physics of their synchrotron-emitting relativistic jets from where the bulk of radio and millimeter emission is radiated. On one hand, AGN jets and their emission cores are significantly less affected by Faraday rotation and depolarization than at longer wavelengths. On the other hand, the millimeter emission of AGN is dominated by the compact innermost regions in the jets, where the jet cannot be seen at longer wavelengths due to synchrotron opacity. Aims. We present the first simultaneous dual frequency 86 GHz and 229 GHz polarimetric survey of all four Stokes parameters for a large sample of 211 radio-loud active galactic nuclei, designed to be flux limited at 1 Jy at 86 GHz. Methods. Most of the observations were made in mid-August 2010 using the XPOL polarimeter on the IRAM 30 m millimetric radio telescope. Results. Linear polarization detections above a 3 sigma median level of similar to 1.0% are reported for 183 sources at 86 GHz and for 23 sources at 229 GHz, where the median 3s level is similar to 6.0%. We show a clear excess of the linear polarization degree that is detected at 229 GHz with regard to that at 86 GHz by a factor of similar to 1.6. This implies a progressively better ordered magnetic field for blazar jet regions that are located progressively upstream in the jet. We show that the linear polarization angle at 86 and 229 GHz and the jet structural position angle for both quasars and BL Lacs do not show a clear preference to align in either parallel or perpendicular directions. Our variability study with regard to the 86 GHz data from our previous survey points out a large degree of variation. In particular, we report total flux and linear polarization changes in time scales of years by median factors of similar to 1.5 in total flux and similar to 1.7 in linear polarization degree (with maximum variations by factors up to 6.3 and similar to 5, respectively). Moreover, 86% of sources show linear polarization angles evenly distributed with regard to our previous measurements.

引用

页数：22

共 59 条

[1] THE SECOND CATALOG OF ACTIVE GALACTIC NUCLEI DETECTED BY THE FERMI LARGE AREA TELESCOPE [J].

Ackermann, M. ;

Ajello, M. ;

Allafort, A. ;

Antolini, E. ;

Atwood, W. B. ;

Axelsson, M. ;

Baldini, L. ;

Ballet, J. ;

Barbiellini, G. ;

Bastieri, D. ;

Bechtol, K. ;

Bellazzini, R. ;

Berenji, B. ;

Blandford, R. D. ;

Bloom, E. D. ;

Bonamente, E. ;

Borgland, A. W. ;

Bottacini, E. ;

Bouvier, A. ;

Bregeon, J. ;

Brigida, M. ;

Bruel, P. ;

Buehler, R. ;

Burnett, T. H. ;

Buson, S. ;

Caliandro, G. A. ;

Cameron, R. A. ;

Caraveo, P. A. ;

Casandjian, J. M. ;

Cavazzuti, E. ;

Cecchi, C. ;

Charles, E. ;

Cheung, C. C. ;

Chiang, J. ;

Ciprini, S. ;

Claus, R. ;

Cohen-Tanugi, J. ;

Conrad, J. ;

Costamante, L. ;

Cutini, S. ;

de Angelis, A. ;

de Palma, F. ;

Dermer, C. D. ;

Digel, S. W. ;

do Couto e Silva, E. ;

Drell, P. S. ;

Dubois, R. ;

Escande, L. ;

Favuzzi, C. ;

Fegan, S. J. .

ASTROPHYSICAL JOURNAL, 2011, 743 (02)

[2] FERMI GAMMA-RAY SPACE TELESCOPE OBSERVATIONS OF GAMMA-RAY OUTBURSTS FROM 3C 454.3 IN 2009 DECEMBER AND 2010 APRIL [J].

Ackermann, M. ;

Ajello, M. ;

Baldini, L. ;

Ballet, J. ;

Barbiellini, G. ;

Bastieri, D. ;

Bechtol, K. ;

Bellazzini, R. ;

Berenji, B. ;

Blandford, R. D. ;

Bonamente, E. ;

Borgland, A. W. ;

Bregeon, J. ;

Brigida, M. ;

Bruel, P. ;

Buehler, R. ;

Burnett, T. H. ;

Buson, S. ;

Caliandro, G. A. ;

Cameron, R. A. ;

Caraveo, P. A. ;

Carrigan, S. ;

Casandjian, J. M. ;

Cavazzuti, E. ;

Cecchi, C. ;

Celik, Oe ;

Chekhtman, A. ;

Cheung, C. C. ;

Chiang, J. ;

Ciprini, S. ;

Claus, R. ;

Cohen-Tanugi, J. ;

Corbel, S. ;

Cutini, S. ;

D'Ammando, F. ;

Dermer, C. D. ;

de Angelis, A. ;

de Palma, F. ;

Digel, S. W. ;

do Couto e Silva, E. ;

Drell, P. S. ;

Dubois, R. ;

Dumora, D. ;

Escande, L. ;

Favuzzi, C. ;

Fegan, S. J. ;

Ferrara, E. C. ;

Fuhrmann, L. ;

Fukazawa, Y. ;

Fusco, P. .

ASTROPHYSICAL JOURNAL, 2010, 721 (02) :1383-1396

[3] The redshift and broad-band spectral energy distribution of NRAO 150 [J].

Acosta-Pulido, J. A. ;

Agudo, I. ;

Barrena, R. ;

Ramos Almeida, C. ;

Manchado, A. ;

Rodriguez-Gil, P. .

ASTRONOMY & ASTROPHYSICS, 2010, 519

[4] Superluminal non-ballistic jet swing in the quasar NRAO 150 revealed by mm-VLBI [J].

Agudo, I. ;

Bach, U. ;

Krichbaum, T. P. ;

Marscher, A. P. ;

Gonidakis, I. ;

Diamond, P. J. ;

Perucho, M. ;

Alef, W. ;

Graham, D. A. ;

Witzel, A. ;

Zensus, J. A. ;

Bremer, M. ;

Acosta-Pulido, J. A. ;

Barrena, R. .

ASTRONOMY & ASTROPHYSICS, 2007, 476 (03) :L17-U7

[5] Testing the inverse-Compton catastrophe scenario in the intra-day variable blazar S50716+71II. A search for intra-day variability at millimetre wavelengths with the IRAM 30m telescope [J].

Agudo, I. ;

Krichbaum, T. P. ;

Ungerechts, H. ;

Kraus, A. ;

Witzel, A. ;

Angelakis, E. ;

Fuhrmann, L. ;

Bach, U. ;

Britzen, S. ;

Zensus, J. A. ;

Wagner, S. J. ;

Ostorero, L. ;

Ferrero, E. ;

Gracia, J. ;

Grewing, Andm. .

ASTRONOMY & ASTROPHYSICS, 2006, 456 (01) :117-U29

[6] A 3.5 mm POLARIMETRIC SURVEY OF RADIO-LOUD ACTIVE GALACTIC NUCLEI [J].

Agudo, I. ;

Thum, C. ;

Wiesemeyer, H. ;

Krichbaum, T. P. .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2010, 189 (01) :1-14

[7] A RECOLLIMATION SHOCK 80 mas FROM THE CORE IN THE JET OF THE RADIO GALAXY 3C 120: OBSERVATIONAL EVIDENCE AND MODELING [J].

Agudo, Ivan ;

Gomez, Jose L. ;

Casadio, Carolina ;

Cawthorne, Timothy V. ;

Roca-Sogorb, Mar .

ASTROPHYSICAL JOURNAL, 2012, 752 (02)

[8] ERRATIC JET WOBBLING IN THE BL LACERTAE OBJECT OJ287 REVEALED BY SIXTEEN YEARS OF 7 mm VLBA OBSERVATIONS [J].

Agudo, Ivan ;

Marscher, Alan P. ;

Jorstad, Svetlana G. ;

Gomez, Jose L. ;

Perucho, Manel ;

Piner, B. Glenn ;

Rioja, Maria ;

Dodson, Richard .

ASTROPHYSICAL JOURNAL, 2012, 747 (01)

[9] ON THE LOCATION OF THE γ-RAY OUTBURST EMISSION IN THE BL LACERTAE OBJECT AO 0235+164 THROUGH OBSERVATIONS ACROSS THE ELECTROMAGNETIC SPECTRUM [J].

Agudo, Ivan ;

Marscher, Alan P. ;

Jorstad, Svetlana G. ;

Larionov, Valeri M. ;

Gomez, Jose L. ;

Lahteenmaki, Anne ;

Smith, Paul S. ;

Nilsson, Kari ;

Readhead, Anthony C. S. ;

Aller, Margo F. ;

Heidt, Jochen ;

Gurwell, Mark ;

Thum, Clemens ;

Wehrle, Ann E. ;

Nikolashvili, Maria G. ;

Aller, Hugh D. ;

Benitez, Erika ;

Blinov, Dmitriy A. ;

Hagen-Thorn, Vladimir A. ;

Hiriart, David ;

Jannuzi, Buell T. ;

Joshi, Manasvita ;

Kimeridze, Givi N. ;

Kurtanidze, Omar M. ;

Kurtanidze, Sofia O. ;

Lindfors, Elina ;

Molina, Sol N. ;

Morozova, Daria A. ;

Nieppola, Elina ;

Olmstead, Alice R. ;

Reinthal, Riho ;

Roca-Sogorb, Mar ;

Schmidt, Gary D. ;

Sigua, Lorand A. ;

Sillanpaa, Aimo ;

Takalo, Leo ;

Taylor, Brian ;

Tornikoski, Merja ;

Troitsky, Ivan S. ;

Zook, Alma C. ;

Wiesemeyer, Helmut .

ASTROPHYSICAL JOURNAL LETTERS, 2011, 735 (01)

[10] LOCATION OF γ-RAY FLARE EMISSION IN THE JET OF THE BL LACERTAE OBJECT OJ287 MORE THAN 14 pc FROM THE CENTRAL ENGINE [J].

Agudo, Ivan ;

Jorstad, Svetlana G. ;

Marscher, Alan P. ;

Larionov, Valeri M. ;

Gomez, Jose L. ;

Lahteenmaki, Anne ;

Gurwell, Mark ;

Smith, Paul S. ;

Wiesemeyer, Helmut ;

Thum, Clemens ;

Heidt, Jochen ;

Blinov, Dmitriy A. ;

D'Arcangelo, Francesca D. ;

Hagen-Thorn, Vladimir A. ;

Morozova, Daria A. ;

Nieppola, Elina ;

Roca-Sogorb, Mar ;

Schmidt, Gary D. ;

Taylor, Brian ;

Tornikoski, Merja ;

Troitsky, Ivan S. .

ASTROPHYSICAL JOURNAL LETTERS, 2011, 726 (01)

← 1 2 3 4 5 6 →