EVN Mini-symposium совместно с ИПА РАН

15:00 - 15:10

Welcome by IAA director (Alexander Ipatov) or vice director (Dmitry Ivanov)

Welcome by EVN PC chair (Michael Lindqvist)

15:10 - 15:25

Michael Lindqvist, "Present status and technical directions of the EVN"

The European VLBI Network has evolved significantly during recent years and as a result it is producing excellent science. This is of course of fundamental importance and the main motivation for further developments of the EVN. I will describe the present status of the array and outline some of the planned future technical directions.

15:25 - 15:40

Bob Campbell, "The KVAZAR telescopes in the EVN"

The three KVAZAR telescopes first participated in EVN observations as additional stations in EK028A-C in October 2008, and have regularly been in EVN network monitoring and user experiments starting from March and May 2010, respectively. Their participation provides a valuable improvement in u-v coverage, especially in the medium to long baselines. I will quickly review some of the history, and discuss the importance of the KVAZAR stations to the performance of the EVN.

15:55 - 16:10

Alexey Melnikov, "Astronomical VLBI Observations in the IAA RAS"

"Quasar" VLBI network of the Institute of Applied Astronomy consist of three 32-m fully steerable radio telescopes RT-32, located at the "Svetloe", "Zelenchukskaya" and "Badary" observatories. At present "Quasar" is fully operational and regularly participates in the observational programs of IVS, ENV, and domestic programs. Here we present a description of our domestic programs, their purposes and results.

16:10 - 16:25

Andrei Lobanov, "VLBI studies of complex structural changes in compact
radio sources"

Sub-milliarcsecond resolution of VLBI measurements provides the best opportunity to detect and track structural changes in a variety of compact radio sources - from the superluminal jets, to expanding supernovae, evolving maser spots, and close binary stars. Timescales on which structural changes have been traced with VLBI can range from tens of years down to tens of minutes. Examples and perspectives of such studies will be outlined briefly in this talk.

16:25 - 16:40

Mikhail Kharinov, "Radio Observations of the Cosmic Gamma-Ray Burst
on "Quasar" Network Telescopes"

From the beginning of 2003 the radio telescopes of "Quasar" network in a single-dish mode are using for observation of radio emission afterglows from the cosmic gamma-ray burst s (GRB) at X-band. We successfully started from GRB030329 but rare radio afterglows achieve 20 mJy what could been detected by RT-32. To rise this possibility the observation and processing methods was improved. And now we can get 3-sigma level 6 mJy as maximum at good weather conditions. Totally was observed 68 sources of GRB, including associated supernovas (SN). Radio emission were detected from GRB030329, SGR1806-20, GRB080319B and GRB110328A. Scheduling and processing of observations were made with a special program packages developed in IAA RAS: SchedMaker and ClassVisual.

16:40 - 16:55

Marcello Giroletti, "EVN observations of gamma-ray sources"

The launch of the AGILE and Fermi satellites and the upgrades to Cherenkov telescopes have revolutionised our view of the gamma-ray sky. VLBI observations are the only tool to image the finest scale structures on which the gamma-ray radiation is produced. I will show some cases in which EVN observations have been of great importance in this context, from radio galaxies (M87) and blazars (0229+200 and 0536+145) to stellar systems (nova V407 Cyg).

16:55 - 17:10

Sandor Frey, "The highest redshift radio quasars with the highest resolution"

Quasars at the highest redshifts (z>5) are rare and valuable objects, both for astrophysical studies of active galactic nuclei and for cosmology. They provide information on the growth of the earliest supermassive black holes in the Universe, on the evolution of radio-loud quasars over billions of years, and on the cosmological model. Sensitive VLBI observations allow us to reveal the innermost structure of the quasar jets, down to ~10 pc linear scales. Here I briefly review the results of our recent EVN observations of high-redshift quasars, with special emphasis on projects where the participation of the KVAZAR radio telescopes was essential. These results include the first estimate of radio jet proper motion at z>5 (in the quasar J1026+2542), and high-resolution imaging of all four z~6 quasars known at present.

17:10 - 17:25

Ania Bartkiewicz, "Methanol maser observations using EVN"

The European VLBI Network has appeared as a great tool in investigations of high-mass star-forming regions via 6.7 GHz methanol maser emission. Expansion of the array with C-band receivers enabled us to find new morphologies and to look in close vicinities of borning massive stars.

17:25 - 17:40

Antonis Polatidis, "The Low Frequency Array (LOFAR): observing capabilities
and the quest for long baselines at low frequencies"

LOFAR has been operational since December 2012 and has yielded new results in a variety of astronomical fields from the Sun, and cosmic rays to large scale clusters. I will discuss the capabilities, present some first results and the opportunities to use the LOFAR. I will also mention the progress of the LOFAR long baseline group.