SIMBAD references

2016ApJ...821...58B - Astrophys. J., 821, 58-58 (2016/April-2)

The structure of the strongly lensed gamma-ray source B2 0218+35.

BARNACKA A., GELLER M.J., DELL'ANTONIO I.P. and ZITRIN A.

Abstract (from CDS):

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±8 pc from the 15 GHz radio core, toward the central engine. This displacement is significant at the ∼3σlevel, 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.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): cosmological parameters - galaxies: jets - gamma rays: general - gravitational lensing: strong - quasars: individual: B2 0218+35

Simbad objects: 17

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2021.12.07-19:42:08

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