A5092552664- Astrophysics and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- Dark Matter and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Neutrino Physics Research
- Geophysics and Gravity Measurements
- Astro and Planetary Science
- Astronomy and Astrophysical Research
- Solar and Space Plasma Dynamics
- Experimental and Theoretical Physics Studies
- Particle Accelerators and Free-Electron Lasers
- Geomagnetism and Paleomagnetism Studies
Max Planck Institute for Radio Astronomy
2023-2024
University of Würzburg
2023
AGN-launched jets are a crucial element in the study of supermassive black holes (SMBH) and their closest surroundings. The formation such jets, whether they launched by magnetic field lines anchored to accretion disc or directly connected hole's (BH) ergosphere, is subject ongoing, extensive research. 3C84, compact radio source central galaxy NGC1275 Perseus super-cluster, prime laboratory for testing jet launching scenarios, as well studying innermost, sub-parsec AGN structure origin. Very...
Active galactic nuclei (AGN) are some of the most luminous and extreme environments in Universe. The central engines AGN believed to be super-massive black-holes (SMBHs) fed by accretion discs threaded magnetic fields within a dense magneto-ionic medium. We report our findings from polarimetric very-long-baseline interferometry (VLBI) observations quasar NRAO,150 taken October 2022 using combined network Very Long Baseline Array (VLBA) Effelsberg 100-m Radio Telescope. These comprise first...
Aims. We introduce the TELAMON program which is using Effelsberg 100-m telescope to monitor radio spectra of active galactic nuclei (AGN) under scrutiny in astroparticle physics, specifically TeV blazars and candidate neutrino-associated AGN. Here, we present characterize our main sample TeV-detected blazars. Methods. analyzed data from first ∼2.5 yr observations between August 2020 February 2023 range 14 GHz 45 GHz. During this pilot phase, observed all 59 Northern Hemisphere (i.e., Dec...
The spatial scales of relativistic radio jets, probed by magneto-hydrodynamic (RMHD) jet launching simulations and most very long baseline interferometry (VLBI) observations differ an order magnitude. Bridging the gap between these RMHD VLBI requires selecting nearby active galactic nuclei (AGN), parsec-scale region which can be resolved. source 3C 84 is a bright AGN fulfilling necessary requirements: it powerful, powered central supermassive black hole, while also being bright. Using 22 GHz...
Aims. We introduce the TELAMON program which is using Effelsberg 100-m telescope to monitor radio spectra of active galactic nuclei (AGN) under scrutiny in astroparticle physics, specifically TeV blazars and candidate neutrino-associated AGN. Here, we present characterize our main sample TeV-detected blazars. Methods. analyze data from first ~2.5 years observations between August 2020 February 2023 range 14 GHz 45 GHz. During this pilot phase, have observed all 59 Northern Hemisphere (i.e.,...
The spatial scales of relativistic radio jets, probed by magneto-hydrodynamic jet launching simulations (RMHDs) and most very-long-baseline interferometry (VLBI) observations differ an order magnitude. Bridging the gap between these RMHD VLBI requires selecting nearby active galactic nuclei (AGN), parsec-scale region which can be resolved. 3C 84 is a bright AGN fulfilling necessary requirements: it powerful, powered central supermassive black hole, while also being very bright. Using 22 GHz...
We present recent results of the TELAMON program, which is using Effelsberg 100-m telescope to monitor radio spectra active galactic nuclei (AGN) under scrutiny in astroparticle physics, namely TeV blazars and neutrino-associated AGN. Our sample includes all known northern TeV-emitting as well positionally coincident with IceCube neutrino alerts. Polarization can give additional insight into source properties, polarized emission often found vary on different timescales amplitudes than total...
We present recent results of the TELAMON program, which is using Effelsberg 100-m telescope to monitor radio spectra active galactic nuclei (AGN) under scrutiny in astroparticle physics, namely TeV blazars and neutrino-associated AGN. Our sample includes all known Northern TeV-emitting as well positionally coincident with IceCube neutrino alerts. Polarization can give additional insight into source properties, polarized emission often found vary on different timescales amplitudes than total...