A5104004731- Astrophysical Phenomena and Observations
- Gamma-ray bursts and supernovae
- Astrophysics and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- Pulsars and Gravitational Waves Research
- Astronomical Observations and Instrumentation
- Astronomy and Astrophysical Research
- Galaxies: Formation, Evolution, Phenomena
- Solar and Space Plasma Dynamics
- Neutrino Physics Research
- Stellar, planetary, and galactic studies
- Advanced Frequency and Time Standards
- Relativity and Gravitational Theory
- Anomaly Detection Techniques and Applications
- Geophysics and Gravity Measurements
- Particle Detector Development and Performance
- Gyrotron and Vacuum Electronics Research
- Scientific Research and Discoveries
- Geophysics and Sensor Technology
- Dark Matter and Cosmic Phenomena
- Electromagnetic Launch and Propulsion Technology
Max Planck Institute for Radio Astronomy
2023
University of Würzburg
2023
Astronomy and Space
2023
Commonwealth Scientific and Industrial Research Organisation
2023
Abstract We present the first multiband centimeter detection of POX 52, a nearby dwarf galaxy believed to harbor robust intermediate-mass black hole. conducted deep observations using Australia Telescope Compact Array (ATCA), spanning frequencies from 4.5 10 GHz, as well sensitive Karl G. Jansky Very Large (VLA) operating in its most extended A configuration at S band (2–4 GHz) and C (4–8 GHz). In ATCA observations, source shows compact morphology, with only one direction marginally...
To investigate the short-term variability and determine size of optical continuum emitting intermediate-mass black holes (IMBHs), we carried out high-cadence, multi-band photometric monitoring a Seyfert 1 galaxy J0249-0815 across two nights, together with one-night single-band preliminary test. The presence broad Ha component in our target was confirmed by recent Palomar/P200 spectroscopic observations, 23 years after Sloan Digital Sky Survey, ruling supernovae origin line. experiment...
Abstract To investigate the short-term variability and determine size of optical continuum emitting region intermediate-mass black holes (IMBHs), we carried out high-cadence, multiband photometric monitoring a Seyfert 1 galaxy J0249−0815 across two nights, together with one-night single-band preliminary test. The presence broad H α component in our target was confirmed by recent Palomar/P200 spectroscopic observations, 23 yr after Sloan Digital Sky Survey, ruling supernovae origin line....
We present the first multi-band centimeter detection of POX 52, a nearby dwarf galaxy believed to habor robust intermediate mass black hole (IMBH). conducted deep observations using Australia Telescope Compact Array (ATCA), spanning frequencies from 4.5 10 GHz, as well sensitive Karl G. Jansky Very Large (VLA) operating in its most extended A-configuration at S band (2--4 GHz) and C (4--8 GHz). In ATCA observations, source shows compact morphology, with only one direction marginally...
PKS 2142-758 is a flat spectrum radio quasar which emits few, weak but significant gamma-ray flares in the MeV through GeV energy range. The first flare occured on April 4th, 2010, when source reached daily flux of (1.1 \pm 0.3) * 10^-6 ph cm^-2 s^-1 (ATEL #2539) 100 to 300 This represented more than an order magnitude increase over its quiescent flux. Since initial flare, this has been detected elevated state within same range from October November 2010 and another period ranging July...
The origin of high-energy cosmic neutrinos detected by the IceCube observatory is a hotly debated topic in astroparticle physics. There growing evidence that some these can be associated with active galactic nuclei (AGN) and especially blazars. Several recent studies have revealed statistical correlation between radio-bright AGN samples neutrino event catalogs. In addition, number individual been found to coincide radio-flaring These observational results strongly call for high-quality, high...