365 citations · 3.4k across the 56 of their papers we have counts for
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Cosmological evolution of quasar radio emission in the view of multifractality
A. Bewketu Belete, Smain Femmam, Merja Tornikosk +5
Variations in scaling behavior in the flux and emissions of distant astronomical sources with respect to their cosmic time are important l phenomena that can provide valuable infor…
Radio jets and gamma-ray emission in radio-silent narrow-line Seyfert 1 galaxies
A. Lähteenmäki, E. Järvelä, V. Ramakrishnan +4
We have detected six narrow-line Seyfert 1 (NLS1) galaxies at 37 GHz that were previously classified as radio silent and two that were classified as radio quiet. These detections r…
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…
Kinematics of Parsec-Scale Jets of Gamma-Ray Blazars at 43~GHz within the VLBA-BU-BLAZAR Program
Svetlana G. Jorstad, Alan P. Marscher, Daria A. Morozova +10
We analyze the parsec-scale jet kinematics from 2007 June to 2013 January of a sample of -ray bright blazars monitored roughly monthly with the Very Long Baseline Array at 43~GH…
Simultaneous spectra and radio properties of BL Lac's
M. Mingaliev, Yu. Sotnikova, T. Mufakharov +6
We present the results of nine years of the blazar observing programme at the RATAN-600 radio telescope (2005-2014). The data were obtained at six frequency bands (1.1, 2.3, 4.8, 7…
37 GHz observations of narrow-line Seyfert 1 galaxies
A. Lähteenmäki, E. Järvelä, T. Hovatta +12
Observations at 37 GHz, performed at Metsähovi Radio Observatory, are presented for a sample of 78 radio-loud and radio-quiet narrow-line Seyfert 1 (NLS1) galaxies, together with a…