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Millimeter-VLBI Detection and Imaging of the Gravitationally Lensed Gamma-Ray Blazar JVAS B0218+357
Kazuhiro Hada, Kotaro Niinuma, Julian Sitarek +2
We observed the gravitationally lensed blazar JVAS B0218+357 with the KVN and VERA Array (KaVA) at 22, 43, and 86 GHz. The source has recently been identified as an active gamma-ra…
Detection of persistent VHE gamma-ray emission from PKS 1510-089 by the MAGIC telescopes during low states between 2012 and 2017
MAGIC Collaboration, V. A. Acciari, S. Ansoldi +165
PKS 1510-089 is a flat spectrum radio quasar strongly variable in the optical and GeV range. We search for low-state VHE gamma-ray emission from PKS 1510-089. We aim to characteriz…
Long-term multi-wavelength variability and correlation study of Markarian 421 from 2007 to 2009
MAGIC Collaboration, M. L. Ahnen, S. Ansoldi +176
We study the multi-band variability and correlations of the TeV blazar Mrk 421 on year time scales, which can bring additional insight on the processes responsible for its broadban…
Variability of GeV gamma-ray emission in QSO B0218+357 due to microlensing on intermediate size structures
Julian Sitarek, Wlodek Bednarek
Strong gravitational lensing leads to an occurrence of multiple images, with different magnifications, of a lensed source. Those magnifications can in turn be modified by microlens…
Very-high-energy gamma-rays from the Universe's middle age: detection of the z=0.940 blazar PKS 1441+25 with MAGIC
MAGIC Collaboration, M. L. Ahnen, S. Ansoldi +246
The flat-spectrum radio quasar PKS 1441+25 at a redshift of z = 0.940 is detected between 40 and 250 GeV with a significance of 25.5 σ using the MAGIC telescopes. Together with the…
MAGIC detection of short-term variability of the high-peaked BL Lac object 1ES 0806+524
MAGIC Collaboration, J. Aleksić, S. Ansoldi +152
The high-frequency-peaked BL Lac (HBL) 1ES 0806+524 (z = 0.138) was discovered in VHE rays in 2008. Until now, the broad-band spectrum of 1ES 0806+524 has been only poorly char…