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Prof.
6c9e606df0845ea84b327fc5f7fd6dee
14
Dissecting the Universe - Workshop on Results from High-Resolution VLBI
<p><img alt="" src="https://events.mpifr-bonn.mpg.de/indico/event/4/material/0/0.png" style="height:430px; width:720px" /></p>
<p><strong>Scientific rationale:</strong></p>
<p>Recent developments have pushed the limits of resolution in astrophysics to new frontiers. Very-long-baseline interferometry (VLBI) at millimetre wavelengths or using antennas in space yields resolutions down to tens of microarcseconds (that is, fractions of nanoradians). These observations probe compact objects such as the innermost regions of active galactic nuclei. Space VLBI is living a new era at present with the results from the RadioAstron mission, enhancing radio interferometry in terms of resolution at least one order of magnitude with respect to ground-based VLBI. Millimetre VLBI also brings radio interferometry to a new range of resolution and with much enhanced sensitivity due to improvements in data bit rate. With more antennas capable of VLBI at 3-mm wavelength, and successful observations being carried out at 1-mm, a new window is open to universe at unprecedented resolution. This workshop will review recent results on high resolution radio astronomy, including opportunities provided by new antennas becoming available. It will also discuss on the applications of high-resolution imaging techniques and the synergies in the study of compact objects by space and mm-VLBI together. </p>
<p>Contributions to the workshop will be published online in this webpage; no regular proceedings are planned. Abstracts will be sent to the Astrophysical Data System.</p>
<p><strong>Scientific Organising Committee:</strong></p>
<p>E. Ros (MPIfR; Chair), M. Giroletti (IRA-INAF), T. Hovatta (Aalto Univ.), Y.Y. Kovalev (ASC Lebedev), A.P. Lobanov (MPIfR), J.A. Zensus (MPIfR)</p>
<p><strong>Local Organising Committee:</strong></p>
<p>E. Ros (Chair), G. Bruni, B. Naunheim, J.A. Zensus</p>
<p><strong>Sponsors:</strong></p>
<p>This meeting is sponsored by the MPI für Radioastronomie and by <a href="http://www.radionet-eu.org/">RadioNet3</a>. RadioNet3 has received funding from the European Union’s Seventh Framework Programme for research, technological development and demonstration under grant agreement no 283393.</p>
<p> </p>
<p><img alt="" src="http://www.radionet-eu.org/sites/radionet-eu.org/files/cms/images/RadioNet_Logo_200.jpg" style="height:78px; width:200px" /> <strong><img alt="" src="http://www.radionet-eu.org/sites/radionet-eu.org/themes/radionet/img/header_EU.jpg" style="height:78px; width:117px" /></strong> </p>
False
Max-Planck-Institut für Radioastronomie, Bonn, Germany
MPI für Radioastronomie
Auf dem Hügel 69
D-53121 Bonn
GERMANY
0.02
2015-11-30T13:00:00
2015-12-02T18:00:00
2015-03-23T18:00:11
2015-12-10T10:43:02
Europe/Berlin
6c9e606df0845ea84b327fc5f7fd6dee
2
false
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0
Invited
Probing the innermost regions of AGN jets and their magnetic fields with RadioAstron
Dr.
Instituto de Astrofísica de Andalucía - CSIC
9eb4d3571f1fdf2ef0e75e14a1d255b7
Dr.
Instituto de Astrofísica de Andalucía - CSIC
9eb4d3571f1fdf2ef0e75e14a1d255b7
Dr.
MPI für Radioastronomie
4dffa7689a6089770a09283de01dfe1c
Dr.
MPI für Radioastronomie
1d90283748dba5d27eb703668f943867
Dr.
ASC LPI
e662fef01a1d56828983aac26ab1e7d1
Prof.
Boston University
63f5e9dce12d82080e11f66395d3df82
Dr.
Institute for Astrophysical Research, Boston University, USA
6376afeda509c4f19d3ab46aa13c12e4
Max-Planck-Institut für Radioastronomie, Bonn, Germany
MPI für Radioastronomie
Auf dem Hügel 69
D-53121 Bonn
GERMANY
0.02
2015-12-01T16:00:00
2015-12-01T16:30:00
00:30
We present polarimetric 1.3 cm RadioAstron, 7 mm VLBA, and 3 mm GMVA observations of a sample of blazars probing the innermost jet regions at tens of microarcseconds angular resolution. Comparison of the total and polarized emission across these wavebands allows to determine the magnetic field structure and strength in the vicinity of the central black hole through Faraday rotation analysis. It also allows to probe the brightness temperature, angular sizes, and spectra across and along the innermost jet to determine the physical parameters of the fluid (velocity field, energy density) and that of the non-thermal electron population. This information can be used to understand how AGN jets are formed, accelerated and collimated, what is the role played by the magnetic field in these processes.
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2026-08-13
2026-08-14