Results 31 to 40 of about 71 (64)

Polarization VLBI monitoring of BL lacertae - kinematics, faraday effects and intermediate scale structure

open access: yes
This thesis presents the results of a series of polarization VLBI experiments on the wellknown variable radio source BL Lacertae (BL Lac). VLBI provides the only means to study radio sources on scales 1 mas, and the sensitivity to polarization allows the
Reynolds, Cormac
core  

A 34.5 day quasi-periodic oscillation in γ-ray emission from the blazar PKS 2247-131. [PDF]

open access: yesNat Commun, 2018
Zhou J   +7 more
europepmc   +1 more source

The H.E.S.S. extragalactic sky survey with the first decade of observations

open access: yes
The results of the first extragalactic gamma-ray survey by the High Energy Stereoscopic System (H.E.S.S.) are presented. The survey comprises 2720 hours of very high-energy gamma-ray observations of the extragalactic sky, recorded with H.E.S.S. from 2004
Devin, J.   +142 more
core  

The case for unification. [PDF]

open access: yesProc Natl Acad Sci U S A, 1995
Gopal-Krishna.
europepmc   +1 more source

Multifrequency Studies

open access: yes, 1997
The present report concerns the following projects 'Multifrequency observations of the BL Lacertae object MK 421"; "EUVE and multifrequency observations of the quasars 3C 273 and 3C 279"; "EUVE observations of the symbiotic star RAquarii"; and ...
Kafatos, Menas
core  

First characterization of the emission behavior of Mrk 421 from radio to very high-energy gamma rays with simultaneous X-ray polarization measurements

open access: yes
Aims. We have performed the first broadband study of Mrk 421 from radio to TeV gamma rays with simultaneous measurements of the X-ray polarization from IXPE.Methods.
Tutone, A.   +252 more
core  

Very high-energy gamma-ray detection and long-term multiwavelength view of the flaring blazar B2 1811+31

open access: yes
Context.
Tutone, A.   +233 more
core  

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