I will present an overview of the latest results of the 3CR Chandra Snapshot Survey, a survey dedicated to completing the X-ray coverage of the 3CR catalog with observations of the Chandra X-ray observatory. In particular, I will present an overview of the survey, focused on the results obtained for radio sources in the redshift range between 1.5 and 2.5. This survey has proven to be an invaluable tool in the study of radio sources, providing new Chandra archival observations of 122 sources. Furthermore, thanks to this survey, we discovered the presence of extended X-ray emission around FR II radio galaxies, which motivated the start of a systematic analysis aimed at (i) investigating whether it is due to Inverse Compton scattering (IC) of seed photons arising from the Cosmic Microwave Background (CMB) or to thermal emission from an intracluster medium (ICM), and (ii) at testing the impact of this extended emission on hotspot detection. I will present the final results of this work as well as the preliminary results of our study of the extended X-ray emission at scales of a few tens of kiloparsecs for the radio galaxies 3CR 318.1 and 3CR 196.1. Lastly, I will introduce the COMP2CAT catalog, a catalog of compact double radio galaxies selected from an existing catalog of radio sources based on NVSS, FIRST, and SDSS. This catalog, the fourth in a series of radio source catalogs recently created (FRICAT, FRIICAT, and WATCAT), aims at attaining a better understanding of sources with intermediate morphologies between FR IIs and FR 0s and it can potentially be used to clarify the role of double sources in the general evolutionary scheme of radio galaxies.

Location: Online

https://cesnet.zoom.us/j/93459273898?pwd=TlVUb1FCOTNJMXZKWHBYR2lOSFNkUT09 Passcode: 474467 Meeting ID: 934 5927 3898

AGN outflows provide a natural link between a galaxy and its central black hole. Thermally driven outflows occur when X-rays generated in the close vicinity of a supermassive black hole irradiate the distant regions of the AGN disk. Specifically, established theory places these ionized outflows near the Compton radius where escape velocities are characteristic of the warm absorbers commonly seen in AGN spectra. Such models have thus far been unable to account for the range of inferred ionization parameters, however. In this talk, I will present recent results showing that beyond about 100 Compton radii, thermal instability operates in irradiated disk atmospheres, and this results in a broader range of ionization parameters. The resulting dynamics, as revealed by numerical solutions to the equations of non-adiabatic (multiphase) gas dynamics, is the episodic formation of tsunami-like structures that we refer to as IAFs. I'll discuss the underlying principles of these new clumpy wind solutions and explain how they can inform interpretations of the absorption measure distribution.

Location: Zoom

https://cesnet.zoom.us/j/91250368547?pwd=SHpqby9ESytvRytHenlDUk1uUG9oQT09 Meeting ID: 912 5036 8547 Passcode: 716065