Korean VLBI Network (KVN)



2015 Seminar List:


01/23/2015   01/30/2015   02/13/2015   02/27/2015   03/20/2015   04/10/2015   05/08/2015   05/15/2015   05/22/2015   05/29/2015   06/05/2015   06/12/2015   07/03/2015   07/24/2015   07/31/2015   08/07/2015   08/28/2015   09/04/2015   09/18/2015   09/25/2015   10/02/2015   10/30/2015   11/06/2015   11/27/2015  

Date
08/07/2015
Speaker
Dr. Tae Hyun Jung (KVN)
Venue
KASI
Title
Multi-frequency AGN Survey with KVN (MASK)
Abstract

The unique characteristic of the Korean VLBI Network (KVN) is to perform simultaneous VLBI observations at 22, 43, 86, and 129 GHz.

The KVN multi-frequency VLBI system brings great benefits for high frequency VLBI observations, of which coherence is significantly limited due to atmospheric phase fluctuations.

We already demonstrated the feasibility of frequency phase transfer (FPT) to calibrate high frequency phase errors using the lower frequency phase solutions, and two compact radio sources (1308+326 and NRAO 512) were successfully detected for the first time at 129 GHz using this technique.

Carrying out the multi-frequency VLBI survey for complete sample of VLBI sources based on the 22 GHz detection, which is the lower limit of KVN FPT, will be able to provide a unique multi-frequency VLBI catalog which is certainly important for statistical studies of AGNs and investigating the nature of AGN jet emissions effectively. In this talk, I will outline the ¡°Multi-frequency AGN Survey with KVN (MASK)¡± project as an institute program of KVN.


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Korean VLBI Network (KVN)