PROBING THE INNER JET OF THE QUASAR PKS 1510-089 WITH MULTI-WAVEBAND MONITORING DURING STRONG GAMMA-RAY ACTIVITY

被引：359

作者：

Marscher, Alan P. ^{[1
]}

Jorstad, Svetlana G. ^{[1
,2
]}

Larionov, Valeri M. ^{[2
,3
]}

Aller, Margo F. ^{[4
]}

Aller, Hugh D. ^{[4
]}

Lahteenmaki, Anne ^{[5
]}

Agudo, Ivan ^{[6
]}

Smith, Paul S. ^{[7
]}

Gurwell, Mark ^{[8
]}

Hagen-Thorn, Vladimir A. ^{[2
,3
]}

Konstantinova, Tatiana S. ^{[2
]}

Larionova, Elena G. ^{[2
]}

Larionova, Liudmila V. ^{[2
]}

Melnichuk, Daria A. ^{[2
]}

Blinov, Dmitry A. ^{[2
]}

Kopatskaya, Evgenia N. ^{[2
]}

Troitsky, Ivan S. ^{[2
]}

Tornikoski, Merja ^{[5
]}

Hovatta, Talvikki ^{[5
]}

Schmidt, Gary D. ^{[7
]}

D'Arcangelo, Francesca D. ^{[1
]}

Bhattarai, Dipesh ^{[1
]}

Taylor, Brian ^{[1
,9
]}

Olmstead, Alice R. ^{[1
]}

Manne-Nicholas, Emily ^{[1
]}

Roca-Sogorb, Mar ^{[6
]}

Gomez, Jose L. ^{[6
]}

McHardy, Ian M. ^{[10
]}

Kurtanidze, Omar ^{[11
]}

Nikolashvili, Maria G. ^{[11
]}

Kimeridze, Givi N. ^{[11
]}

Sigua, Lorand A. ^{[11
]}

机构：

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

[2] St Petersburg State Univ, Astron Inst, St Petersburg 198504, Russia

[3] Isaac Newton Inst Chile, St Petersburg Branch, St Petersburg, Russia

[4] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA

[5] Aalto Univ, Metsahovi Radio Observ, FIN-02540 Kylmala, Finland

[6] CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain

[7] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA

[8] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[9] Lowell Observ, Flagstaff, AZ 86001 USA

[10] Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England

[11] Abastumani Astrophys Observ, Mt Kanobili, Abastumani, Georgia

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2010年 / 710卷 / 02期

基金：

美国国家科学基金会; 芬兰科学院; 英国科学技术设施理事会;

关键词：

gamma rays: general; polarization; quasars: individual (PKS 1510-089); radio continuum: galaxies; X-rays: galaxies; GALACTIC NUCLEI; POLARIMETRIC OBSERVATIONS; HIGH-FREQUENCIES; AREA TELESCOPE; RADIO-SOURCES; 3C; 279; POLARIZATION; MODEL; VARIABILITY; RADIATION;

D O I：

10.1088/2041-8205/710/2/L126

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present results from monitoring the multi-waveband flux, linear polarization, and parsec-scale structure of the quasar PKS 1510-089, concentrating on eight major gamma-ray flares that occurred during the interval 2009.0-2009.5. The gamma-ray peaks were essentially simultaneous with maxima at optical wavelengths, although the flux ratio of the two wave bands varied by an order of magnitude. The optical polarization vector rotated by 720 degrees during a five-day period encompassing six of these flares. This culminated in a very bright, similar to 1 day, optical and gamma-ray flare as a bright knot of emission passed through the highest-intensity, stationary feature (the "core") seen in 43 GHz Very Long Baseline Array images. The knot continued to propagate down the jet at an apparent speed of 22c and emit strongly at gamma-ray energies as a months-long X-ray/radio outburst intensified. We interpret these events as the result of the knot following a spiral path through a mainly toroidal magnetic field pattern in the acceleration and collimation zone of the jet, after which it passes through a standing shock in the 43 GHz core and then continues downstream. In this picture, the rapid gamma-ray flares result from scattering of infrared seed photons from a relatively slow sheath of the jet as well as from optical synchrotron radiation in the faster spine. The 2006-2009.7 radio and X-ray flux variations are correlated at very high significance; we conclude that the X-rays are mainly from inverse Compton scattering of infrared seed photons by 20-40 MeV electrons.

引用

页码：L126 / L131

页数：6

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