Event calendar file
11-13 April 2022
MPI für Radioastronomie
Europe/Berlin timezone
Home > Contribution List
Contribution List
Displaying 21
contributions
out of
21
Strong gravitational lensing is a powerful tool to address many interesting astrophysical questions. To this day, only a few hundreds strong gravitational lens systems are known. However, ongoing and upcoming surveys with, e.g. the SKA, will soon discover hundreds of thousands of new gravitational lens systems, marking a new beginning for strong gravitational lensing studies. In this talk, I will
... More
Presented by Dr. Simona VEGETTI
on
11 Apr 2022
at
14:15
The broad bandwidth coverage, unprecedented sensitivity and angular resolution of radio polarimetric observations provided by SKA pathfinder/precursors and the eventual SKA will allow us to address many long-standing mysteries in cosmic magnetism science.
In this talk, I will highlight new science opportunities enabled by these instruments in the field of magneto-ionic medium of AGN, the multi-s
... More
Presented by Dr. Sui Ann MAO
on
11 Apr 2022
at
11:00
The suite of SKA pathfinders have made a wide range of impressive and in some cases, unexpected discoveries in the extragalactic radio sky. These include the most distant detections of HI emission and OH masers, previously unseen radio galaxy morphological features, and transformative new perspectives of previously well-studied cosmic laboratories. However, several attributes of these telescopes
... More
Presented by Prof. Roger DEANE
on
12 Apr 2022
at
09:00
Session:
Gravitational Waves & Multimessenger Astrophysics I
Track: Gravitational Waves & Multimessenger Astrophysics
It’s been a fantastic decade for black hole studies, highlighted by the 2017 and 2020 Nobel Prizes in Physics. Multiple Galactic Center research groups, the Event Horizon Telescope, and LIGO/Virgo continue to bring rapid-fire new observations to sharpen our understanding of these exotic objects. I will discuss Sgr A*'s unique variability alongside other time domain phenomena in the Galactic Cent
... More
Presented by Prof. Daryl HAGGARD
on
12 Apr 2022
at
15:30
Session:
Compact objects, relativistic jets and feedback III
Track: Compact objects, relativistic jets and feedback
Intermediate-mass black holes (IMBHs) of 100-1e5 solar masses formed at z>7 are currently the best candidates to being the seeds from which the first supermassive black holes formed. Studying this population of early Universe seed black holes has so far been only possible by investigating the possible local relics of those that did not become supermassive. These relic IMBHs should be found in glob
... More
Presented by Dr. Mar MEZCUA
on
12 Apr 2022
at
13:30
Intensity mapping measures the large-scale spatial fluctuations in the collective emission from all of the sources emitting in some convenient spectral lines. It is naturally sensitive to the radiation from faint sources and from the diffuse intergalactic medium. It has also the advantage of measuring fluctuations on large regions of the sky (few square degrees) in a large frequency, and thus reds
... More
Presented by Prof. Guilaine LAGACHE
on
11 Apr 2022
at
13:30
I'll discuss opportunities for radio observations to advance our knowledge of massive black hole evolution. In particular, I'll focus on jest at high redshift, and their possible link to super-Eddington accretion and to counterparts of gravitational wave detections of massive black hole mergers with LISA. I'll also discuss radio observations as gravitational wave experiments, with Pulsar Timing Ar
... More
Presented by Dr. Marta VOLONTERI
on
11 Apr 2022
at
15:30
Session:
Compact objects, relativistic jets and feedback I
Track: Gravitational Waves & Multimessenger Astrophysics
A major open question in high-energy astrophysics is how relativistic jets are launched, accelerated and collimated. The inner regions of jets from active galactic nuclei have recently been imaged in exquisite detail using high angular resolution radio observations from the Event Horizon Telescope and space VLBI. However, the long evolutionary timescales of supermassive black holes make it difficu
... More
Presented by Prof. James MILLER-JONES
on
12 Apr 2022
at
09:45
Session:
Gravitational Waves & Multimessenger Astrophysics II
Track: Gravitational Waves & Multimessenger Astrophysics
Since the revolutionary discovery of gravitational wave (GW) emission from a binary black hole merger in 2015, the exquisite GW detectors LIGO, Virgo and KAGRA have detected more than 90 compact object mergers. Most notably, one of these mergers corresponds to the first binary neutron star merger, dubbed GW170817. This event has been transformative because it was observed in both gravitational and
... More
Presented by Prof. Samaya NISSANKE
on
13 Apr 2022
at
14:15
Session:
Compact objects, relativistic jets and feedback III
Track: Compact objects, relativistic jets and feedback
Energetic outflows, by supposedly evacuating galaxies of their interstellar medium (ISM) gas reservoirs, are considered the main manifestation of negative feedback that can lead to galaxy quenching. Guided by the predictions of earlier cosmological simulations, which showed that extreme feedback events could lead to an almost sudden suppression of star formation in galaxies, the observational inve
... More
Presented by Dr. Claudia CICONE
on
12 Apr 2022
at
14:15
Session:
Compact objects, relativistic jets and feedback II
Track: Compact objects, relativistic jets and feedback
A century after their discovery, relativistic jets are still among the most studied and fascinating objects in the Universe. They represent a unique cosmic laboratory for investigating the physics of relativistic plasmas in extreme conditions, and are believed to play a crucial role in the evolution of galaxies and clusters. Much of the progress in radio interferometric techniques has been driven
... More
Presented by Dr. Bia BOCCARDI
on
12 Apr 2022
at
11:00
The mundane task of measuring the positions of astronomical sources can, when carried out with sufficient precision, unlock transformative understanding of topics ranging from stellar evolution to cosmology. Most fundamentally, this springs from the provision of gold-standard, model-independent distance estimates for Galactic objects via the measurement of their annual geometric parallax. These m
... More
Presented by Prof. Adam DELLER
on
13 Apr 2022
at
11:00
Session:
Compact objects, relativistic jets and feedback II
Track: Compact objects, relativistic jets and feedback
Relativistic jets in active galaxies are key to scientific advance in a multitude of interrelated fields of modern astrophysics ranging from fundamental physics in strong gravity near supermassive black holes over astroparticle physics to feedback on cosmological scales. Advances in radio astronomy will provide unique observational data on jets across scales, methods and disciplines over the comin
... More
Presented by Prof. Matthias KADLER
on
12 Apr 2022
at
11:45
The past decade has seen substantial improvements in our ability to study radio transients, largely due to new and upgraded telescopes such as ASKAP, MeerKAT, JVLA and, at low frequencies, LOFAR and the MWA. These instruments have started producing results, from the detection of long term synchrotron transients like gamma-ray burst afterglows and tidal disruption events, to more rapidly varying ph
... More
Presented by Prof. Tara MURPHY
on
13 Apr 2022
at
09:00
Radio astronomy was first performed at low frequencies, but historically had seen a decline due to the sensitivity and resolution gains offered by moving to higher frequencies. Thanks to the search for the Epoch of Reionisation, low-frequency radio astronomy has undergone a renaissance, with instruments such as the Murchison Widefield Array, LOw-Frequency ARray, and the upgraded Giant Metrewave Ra
... More
Presented by Prof. Natasha HURLEY-WALKER
on
13 Apr 2022
at
15:30
Session:
Gravitational Waves & Multimessenger Astrophysics I
Track: Gravitational Waves & Multimessenger Astrophysics
Presented by Prof. Raffaella MARGUTTI
on
12 Apr 2022
at
16:15
Magnetic fields play a fundamental role in the formation, evolution and ongoing physical characteristics of both stars and planets. For example, the enhanced magnetic activity of the the young Sun, powered by its rapid rotation, was a major factor in defining the atmospheric properties of the solar system planets. The enhanced radiative output at higher energies during flares leads to heating of
... More
Presented by Prof. Gregg HALLINAN
on
13 Apr 2022
at
11:45
I will present an overview of observations, technologies, and facilities observing the evolution of the Universe in the (far-)infrared, from 2 to 2000 microns ($ \mu m$) in wavelength. I will begin with current efforts to study the cosmic microwave background (CMB, 1000-4000$ \mu m$), the relic radiation left over from the Big Bang. I will present an overview of the rich scientific questions curre
... More
Presented by Prof. Joaquin VIEIRA
on
11 Apr 2022
at
11:45
Session:
Gravitational Waves & Multimessenger Astrophysics II
Track: Gravitational Waves & Multimessenger Astrophysics
The third gravitational-wave transient catalogue released by the LIGO-Virgo-KAGRA collaboration contains 90 event candidates, most of them associated with binary black hole mergers. This wealth of data opens new perspectives on the study of astrophysical black holes and poses new challenges to computational astrophysicists. What are the formation channels of binary black holes? What is their evolu
... More
Presented by Prof. Michela MAPELLI
on
13 Apr 2022
at
13:30
Our current understanding of galaxy evolution is centered around the cycling of gas in and out of galaxies, and the process of star formation out of the gas that settles in galactic discs. Observations of the cold interstellar medium at mm-to-radio wavelengths have been instrumental in firmly establishing the role of gas in regulating star formation and galaxy growth. In this talk I will review th
... More
Presented by Prof. Amelie SAINTONGE
on
11 Apr 2022
at
09:45
The transient radio sky is lit up on time scales ranging from nano-seconds to years by a diverse population of sources that are as close as the magnetic planets in our solar system and as distant as gamma-ray bursts on the edge of the visible Universe. Time variability is an important additional strategy for studying the underlying physics of astrophysical systems and is also essential for discove
... More
Presented by Dr. Laura SPITLER
on
13 Apr 2022
at
09:45
