Search Publications
What Is Inside the Double–Double Structure of the Radio Galaxy J0028+0035?
Frey, Sándor; Marecki, Andrzej; Gabányi, Krisztina Éva +1 more
The radio source J0028+0035 is a recently discovered double–double radio galaxy at redshift
From Galactic Bars to the Hubble Tension: Weighing Up the Astrophysical Evidence for Milgromian Gravity
Banik, Indranil; Zhao, Hongsheng
Astronomical observations reveal a major deficiency in our understanding of physics—the detectable mass is insufficient to explain the observed motions in a huge variety of systems given our current understanding of gravity, Einstein's General theory of Relativity (GR). This missing gravity problem may indicate a breakdown of GR at low acceleratio…
The Quasar CTD 135 Is Not a Compact Symmetric Object
Frey, Sándor; An, Tao; Gabányi, Krisztina É.
The radio-loud quasar CTD 135 (2234+282, J2236+2828) has been proposed as a candidate compact symmetric object (CSO), based on its symmetric radio structure revealed by multi-frequency very long baseline interferometry (VLBI) imaging observations on milliarcsec angular scales. CSOs are known as young jetted active galactic nuclei (AGN) whose relat…
Solar Ultraviolet Bursts in the Joint Footpoints of Multiple Transition Region Loops
Fu, Hui; Xia, Lidong; Huang, Zhenghua +4 more
High-Resolution Radio Observations of Five Optically Selected Type 2 Quasars
Paragi, Zsolt; Krezinger, Máté; Frey, Sándor +1 more
Many low-luminosity active galactic nuclei (AGNs) contain a compact radio core which can be observed with high angular resolution using very long baseline interferometry (VLBI). Combining arcsec-scale structural information with milliarcsec-resolution VLBI imaging is a useful way to characterise the objects and to find compact cores on parsec scal…