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personal data approved: 2023. X. 14.
Personal data
Sándor Frey
name Sándor Frey
name of institution
doctoral school
ELTE Doctoral School of Physics (Supervisor)
the share of work in the different doctoral schools. ELTE Doctoral School of Physics 100%
Contact details
E-mail address sandor.freygmail.com
phone number +36 1 391-9320
Academic title
scientific degree, title Ph.D.
year degree was obtained 2001
discipline to which degree belongs physics
institution granting the degree Eötvös Loránd University
Employment
2016 - CSFK Konkoly Thege Miklós Csillagászati Intézet
other (not specified) (tudományos főmunkatárs)
Thesis topic supervisor
number of doctoral students supervised until now 1.5
number of students who fulfilled course requirements 0.5
students who obtained their degrees:
(50%) Krisztina Perger PhD 2022  DSP2-ELTE

present PhD students:
Máté Krezinger (PhD) (2024/08)  DSP2-ELTE
  Thesis topic proposals
Research
research area radio astronomy, radio interferometry, extragalactic astronomy, active galactic nuclei, celestial reference frames
research field in which current research is conducted physics
Publications
2022

Titov Oleg, Frey Sándor, Melnikov Alexey, Lambert Sébastien, Shu Fengchun, Xia Bo, González Javier, Tercero Belén, Gulayev Sergey, Weston Stuart, Natusch Tim: Unprecedented change in the position of four radio sources, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 512: pp. 874-883.
type of document: Journal paper/Article
number of independent citations: 4
language: English
URL 
2020

Kun Emma, Frey Sándor, Gabányi Krisztina É: A self-lensing supermassive binary black hole at radio frequencies: the story of Spikey continues, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 496: (3) pp. 3336-3347.
type of document: Journal paper/Article
number of independent citations: 3
language: English
URL 
2020

Yang Jun, Gurvits Leonid I, Paragi Zsolt, Frey Sándor, Conway John E, Liu Xiang, Cui Lang: A parsec-scale radio jet launched by the central intermediate-mass black hole in the dwarf galaxy SDSS J090613.77+561015.2, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY: LETTERS 495: (1) pp. L71-L75.
type of document: Journal paper/Article
number of independent citations: 10
language: English
URL 
2020

An Tao, Mohan Prashanth, Zhang Yingkang, Frey Sándor, Yang Jun, Gabányi Krisztina É., Gurvits Leonid I., Paragi Zsolt, Perger Krisztina, Zheng Zhenya: Evolving parsec-scale radio structure in the most distant blazar known, NATURE COMMUNICATIONS 11: (1) 143
type of document: Journal paper/Article
number of independent citations: 15
language: English
URL 
2019

Ghirlanda G., Salafia O. S., Paragi Z., Giroletti M., Yang J., Marcote B., Blanchard J., Agudo I., An T., Bernardini M. G., Beswick R., Branchesi M., Campana S., Casadio C., Chassande-Mottin E., Colpi M., Covino S., D’Avanzo P., D’Elia V., Frey S., Gawronski M., Ghisellini G., Gurvits L. I., Jonker P. G., van Langevelde H. J., Melandri A., Moldon J., Nava L., Perego A., Perez-Torres M. A., Reynolds C., Salvaterra R., Tagliaferri G., Venturi T., Vergani S. D., Zhang M.: Compact radio emission indicates a structured jet was produced by a binary neutron star merger, SCIENCE 363: (6430) pp. 968-971.
type of document:
number of independent citations: 218
language: English
URL 
2015

Frey S, Paragi Z, Fogasy J O, Gurvits L I: The first estimate of radio jet proper motion at z>5, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 446: pp. 2921-2928.
type of document: Journal paper/Article
number of independent citations: 23
language: English
URL 
2014

Deane R P, Paragi Z, Jarvis M J, Coriat M, Bernardi G, Fender R P, Frey S, Heywood I, Klöckner H-R, Grainge K, Rumsey C: A close-pair binary in a distant triple supermassive black hole system, NATURE 511: (7507) pp. 57-60.
type of document: Journal paper/Article
number of independent citations: 83
language: English
Full text 
2011

Frey S, Paragi Z, Gurvits L I, Gabányi K É, Cseh D: Into the central 10 pc of the most distant known radio quasar, ASTRONOMY & ASTROPHYSICS 531: L5
type of document: Journal paper/Article
number of independent citations: 26
language: English
URL 
2000

Fomalont E B, Frey S, Paragi Z, Gurvits L I, Scott W K, Taylor A R, Edwards P G, Hirabayashi H: The VSOP 5 GHz Continuum Survey: The Prelaunch VLBA Observations, ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 131: pp. 95-183.
type of document: Journal paper/Article
number of independent citations: 115
language: English
URL 
1999

Gurvits L I, Kellermann K I, Frey S: The ”angular size-redshift” relation for compact radio structures in quasars and radio galaxies, ASTRONOMY & ASTROPHYSICS 342: pp. 378-388.
type of document: Journal paper/Article
number of independent citations: 165
language: English
URL 
Number of independent citations to these publications:662 
Scientometric data
list of publications and citations
number of scientific publications that meet accreditation criteria:
266
number of scientific publications:
253
monographs and professional books:
0
monographs/books in which chapters/sections were contributed:
0 
scientific publications published abroad that meet the accreditation criteria:
216
publications not in Hungarian, published in Hungary, meeting the accreditation criteria:
11
number of independent citations to scientific publications and creative works:
3037


2024. IV. 17.
ODT ülés
Az ODT következő ülésére 2024. június 14-én, pénteken 10.00 órakor kerül sor a Semmelweis Egyetem Szenátusi termében (Bp. Üllői út 26. I. emelet).

 
All rights reserved © 2007, Hungarian Doctoral Council. Doctoral Council registration number at commissioner for data protection: 02003/0001. Program version: 2.2358 ( 2017. X. 31. )