S. Frey

activity

20192026

most citedPlanetary Radio Interferometry and Doppler Experiment (PRIDE) of the JUICE mission

19 citations · 40 across the 15 of their papers we have counts for

collaborators

Showing 2025Show all

2 papers · 1 filter

astro-ph.GA2025

Building a Radio AGN Sample from Cosmic Morning -- The Radio High-Redshift Quasar Catalog (RHzQCat): I. Catalog from SDSS Quasars and Radio Surveys at $z > 3$

Yingkang Zhang, Ruqiu Lin, Krisztina Perger +5

Radio-loud high-redshift quasars (RHRQs) provide crucial insights into the evolution of relativistic jets and their connection to the growth of supermassive black holes. Beyond the…

astro-ph.GA2025★ 4 cited

Identifying compact symmetric objects with high-precision VLBI and Gaia astrometry

T. An, Y. Zhang, S. Frey +2

Compact symmetric objects (CSOs) trace the earliest phases of radio-galaxy growth; however, robust classification is difficult when radio cores are weak or invisible. We aim to dev…

Building a Radio AGN Sample from Cosmic Morning -- The Radio High-Redshift Quasar Catalog (RHzQCat): I. Catalog from SDSS Quasars and Radio Surveys at z>3

Identifying compact symmetric objects with high-precision VLBI and Gaia astrometry

Building a Radio AGN Sample from Cosmic Morning -- The Radio High-Redshift Quasar Catalog (RHzQCat): I. Catalog from SDSS Quasars and Radio Surveys at $z > 3$