THE STRUCTURE OF THE STRONGLY LENSED GAMMA-RAY SOURCE B2 0218+35

被引：22

作者：

Barnacka, Anna ^{[1
,2
]}

Geller, Margaret J. ^{[1
]}

Dell'Antonio, Ian P. ^{[3
]}

Zitrin, Adi ^{[4
]}

机构：

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

[2] Jagiellonian Univ, Astron Observ, Krakow, Poland

[3] Brown Univ, Dept Phys, Providence, RI 02912 USA

[4] CALTECH, Cahill Ctr Astron & Astrophys, Pasadena, CA 91125 USA

来源：

ASTROPHYSICAL JOURNAL | 2016年 / 821卷 / 01期

关键词：

cosmological parameters; galaxies: jets; gamma rays: general; gravitational lensing: strong; quasars: individual (B2 0218+35); HUBBLE-SPACE-TELESCOPE; LARGE-AREA TELESCOPE; ACTIVE GALACTIC NUCLEUS; EXTENDED RADIO JETS; EARLY-TYPE GALAXIES; X-RAY; MAGNETIC RECONNECTION; PARTICLE-ACCELERATION; PKS; 1510-089; TIME-DELAY;

D O I：

10.3847/0004-637X/821/1/58

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Strong gravitational lensing is a powerful tool for resolving the high-energy universe. We combine the temporal resolution of Fermi-LAT, the angular resolution of radio telescopes, and the independently and precisely known Hubble constant from the analysis by the Planck collaboration, to resolve the spatial origin of gamma-ray flares in the strongly lensed source B2. 0218+35. The lensing model achieves 1 mas spatial resolution of the source at gamma-ray energies. The data imply that the gamma-ray flaring sites are separate from the radio core: the bright gamma-ray flare (MJD: 56160-56280) occurred 51 +/- 8pc from the 15 GHz radio core, toward the central engine. This displacement is significant at the similar to 3 sigma level, and is limited primarily by the precision of the Hubble constant. B2. 0218+35 is the first source where the position of the gamma-ray emitting region relative to the radio core can be resolved. We discuss the potential of an ensemble of strongly lensed high-energy sources for elucidating the physics of distant variable sources based on data from Chandra and SKA.

引用

页数：14

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