4 July 2017
MPIfR
Europe/Berlin timezone
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Session III

Place

Location: MPIfR
Address: Auf dem Hügel 69 D-53121 Bonn
Room: 0.02
Date: 4 Jul 15:30 - 17:15

Timetable | Contribution List

Displaying 7 contributions out of 7
Session: Session III
The high resolution and high sensitivity to diffuse emission at low radio frequencies make LOFAR a unique discovery instrument. I will outline how I use its potential to time the activity of AGN hosted by massive, multi-core galaxies found in nearby galaxy clusters.
Presented by Dr. Aleksandar SHULEVSKI on 4/7/2017 at 13:42
Session: Session III
Radio observations play an important role to understand the processes involved in the formation and evolution of stellar and substellar objects. In this context, we have made several contributions to binary stars belonging to the AB Doradus moving group, namely, AB Dor A/C (Guirado et al. 2006; 2011), AB Dor Ba/Bb (Azulay et al. 2015), and HD 160934 A/c (Azulay et al. 2014; 2017). In these cases, ... More
Presented by Dr. Rebecca S. AZULAY on 4/7/2017 at 13:54
Session: Session III
Many active galactic nuclei (AGN) show a spectral peak in their radio spectra. Peaked-spectrum radio sources (including gigahertz-peaked spectrum and compact steep spectrum sources) are radio galaxies that often display small angular extents, suggesting that they are either very young AGN or are confined by a dense surrounding medium. We here present a spectacular sample of 1484 low-frequency peak ... More
Presented by Dr. Joseph CALLINGHAM on 4/7/2017 at 14:06
Session: Session III
After a review of the robopol project and its main findings in the angle domain, we will present average R-band optopolarimetric data, as well as variability parameters, from the first and second RoboPol observing season. We investigate whether gamma-ray-loud and gamma-ray-quiet blazars exhibit systematic differences in their optical polarization proper- ties. We find that gamma-ray-loud blazars h ... More
Presented by Dr. Emmanouil ANGELAKIS on 4/7/2017 at 14:18
Session: Session III
I will briefly discuss the interpretation of the peculiar light curve of J1415+1320, that shows time-symmetric and recurring U-shaped features across the cm-wave and mm-wave bands, which we call Symmetric Achromatic Variability (SAV). Although a common proposal to explain simmilar features in blazar radio light curves are Extreme Scattering Events (ESEs), this is shown to be not viable for this pa ... More
Presented by Dr. Walter MAX-MOERBECK on 4/7/2017 at 13:30
Session: Session III
We use the VLBI technique to obtain precise astrometric measurements to several young stars in nearby star-forming regions belonging to the galactic structure known as the Gould's Belt. These measurements will allow us to investigate the structure of the clouds and their internal kinematics and eventually to characterize the overall dynamics of the Belt. I will present the current status of the pr ... More
Presented by Dr. Gisela Noemí ORTIZ-LEÓN on 4/7/2017 at 14:42
Session: Session III
Stars similar to our Sun undergo radical changes as their lives draw to an end. After swelling up to huge red giants, they start to pulsate, blowing off large clouds of gas and dust, to create intricately shaped and mesmerizing planetary nebulae. The remaining part of the star collapses under gravity, creating a compact white dwarf to slowly cool and fade away. One of the pivotal questions in this ... More
Presented by Dr. Gabor OROSZ on 4/7/2017 at 14:30
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