134 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Joint Institute for VLBI ERICNL14 papers
- Hungarian Academy of SciencesHU8 papers
- Max Planck Institute for Radio AstronomyDE7 papers
- Konkoly ObservatoryHU6 papers
- Shanghai Astronomical ObservatoryCN6 papers
- Chinese Academy of SciencesCN5 papers
- HUN-REN Research Centre for Astronomy and Earth SciencesHU5 papers
- Institute of Space and Astronautical ScienceJP4 papers
- Leiden Observatory4 papers
- Eötvös Loránd UniversityHU3 papers
- Istituto di Radioastronomia di BolognaIT3 papers
- Japan Aerospace Exploration AgencyJP3 papers
9 papers · 1 filter
Identification of Potential Weak Target Radio Quasars for ASTRO-G In-Beam Phase-Referencing
S. Frey, K. E. Gabanyi, Y. Asaki
We apply an efficient selection method to identify potential weak Very Long Baseline Interferometry (VLBI) target quasars simply using optical (SDSS) and low-resolution radio (FIRS…
Multi-frequency investigation of the parsec- and kilo-parsec-scale radio structures in high-redshift quasar PKS 1402+044
J. Yang, L. I. Gurvits, A. P. Lobanov +2
We investigate the frequency-dependent radio properties of the jet of the luminous high-redshift (z = 3.2) radio quasar PKS 1402+044 (J1405+0415) by means of radio interferometric…
VSOP monitoring of the compact BL Lac object AO 0235+164
S. Frey, L. I. Gurvits, D. C. Gabuzda +7
In 1999, the highly compact and variable BL Lac object AO 0235+164 was identified as the highest brightness temperature active galactic nucleus observed with the VLBI Space Observa…
Radio structure of the most distant radio-detected quasar at the ten milli- arcsecond scale
S. Frey, L. Mosoni, Z. Paragi +1
We present a high resolution radio image of SDSS 0836+0054 identified recently as the most distant radio-detected quasar at a redshift of z=5.82. The observation was carried out wi…
The compact core-jet region of the superluminal quasar 3C216
Z. Paragi, S. Frey, I. Fejes +3
Space very long baseline interferometry (VLBI) observations of the quasar 3C216 with the VLBI Space Observatory Programme (VSOP) reveal that the parsec scale structure of the sourc…
VSOP observation of the quasar PKS 2215+020: a new laboratory for core-jet physics at z=3.572
A. P. Lobanov, L. I. Gurvits, S. Frey +4
We report results of a VSOP (VLBI Space Observatory Programme) observation of a high redshift quasar PKS 2215+020 (z=3.572). The ~1 milliarcsecond resolution image of the quasar re…
Dual-Frequency VSOP Observations of AO 0235+164
S. Frey, L. I. Gurvits, D. R. Altschuler +6
AO 0235+164 is a very compact, flat spectrum radio source identified as a BL Lac object at a redshift of z=0.94. It is one of the most violently variable extragalactic objects at b…
The inner radio jet region and the complex environment of SS433
Z. Paragi, R. C. Vermeulen, I. Fejes +3
We present multi-frequency VLBA+VLA observations of SS433 at 1.6, 5 and 15 GHz. These observations provide the highest angular resolution radio spectral index maps ever made for th…
The ``angular size - redshift'' relation for compact radio structures in quasars and radio galaxies
L. I. Gurvits, K. I. Kellermann, S. Frey
We discuss the ``angular size - redshift'' relation for compact radio sources distributed over a wide range of redshifts 0.01 < z < 4.73. Our study is based on a sample of 330 5 GH…