Search Publications
A small radio galaxy at z = 4.026
Paragi, Zsolt; Krezinger, Máté; Frey, Sándor +8 more
Less than $200$ radio-loud active galactic nuclei (AGN) are known above redshift $4$. Around $40$ of them have been observed at milliarcsecond (mas) scale resolution with very long baseline interferometry (VLBI) technique. Some of them are unresolved, compact, relativistically beamed objects, blazars with jets pointing at small angles to the obser…
Identification of additional young nearby runaway stars based on Gaia data release 2 observations and the lithium test
Torres, Guillermo; Mugrauer, Markus; Michel, Kai-Uwe +4 more
Runaway stars are characterized by their remarkably high space velocities, and the study of their formation mechanisms has attracted considerable interest. Young, nearby runaway stars are the most favorable for identifying their place of origin, and for searching for possible associated objects such as neutron stars. Usually, the research field of…
1H 0707-495: An AGN is dimming its X-ray light
Boller, Thomas
We report on one of the first science observations obtained during the Calibration and Verification phase of extended ROentgen Survey with an Imaging Telescope Array (eROSITA) aboard the Spectrum-Roentgen-Gamma (SRG) mission on the famous Narrow-Line Seyfert 1 Galaxy 1H 0707-495. 1H 0707-495 is a highly variable AGN, with a complex, steep X-ray sp…