KVN and VERA Array (KaVA)

Call for Proposals of KaVA (KVN and VERA Array) 2019A
Deadline: 1st November, 2018, 08:00 UT

Go to proposal submission

Dear Colleagues,

We invite proposals for the open use observations of the KaVA (http://kava.kasi.re.kr), a joint VLBI array of the KVN (Korean VLBI Network) and the VERA (VLBI exploration of Radio Astrometry). The joint array consists of three 21-m KVN telescopes and four 20-m VERA telescopes, with baseline lengths ranging from 300 km to 2300 km.

This open use call is to provide VLBI observations at 22 GHz and 43 GHz for astronomers around the world. We support astronomers in the preparation of proposals, scheduling, and data analysis. For that reason, proposers who are not familiar with KaVA capability are strongly recommended to consult with KaVA experts prior to submission. If it is difficult to find collaborators from VERA or KVN, please contact us to find one. The contact address for the support is kavaprop@kasi.re.kr.

In order to avoid conflicts and/or duplication of the targets between open use proposals and the existing KaVA Large Programs, proposers are highly recommended to visit KaVA Large Program (LP) webpage where KaVA LPs and their source list are presented at https://radio.kasi.re.kr/kava/large_programs.php.

Even though the proposed targets are listed in the LPs, they will be accepted as separate open use observations if the scientific goal of the proposals cannot be achieved with the data of the LPs. Otherwise, we encourage the proposers to collaborate with the science teams of the corresponding KaVA LPs. Observations will be conducted with single polarization (LCP) and 1-Gbps data rate. Please consult the KaVA status report for the details. https://radio.kasi.re.kr/kava/status_report19a/node3.html

The total available observation time is up to 250 hours and the observations will be scheduled between 15th January 2019 and 15th July 2019. The maximum observing time per proposal is limited to 100 hours. If requested, the observation time can be allocated over a year, until 15th January 2019, but the observation time will be still limited to 100 hours. From this call, KaVA will open “phase-referencing”. Please consult the KaVA status for the details. The deadline for submission is at 08:00 UT on 1st November 2018. Detailed information on the proposal submission can be found at https://radio.kasi.re.kr/kava/proposal_info.php.

ToO opportunity

It is strongly recommended that Target of Opportunity proposals (especially expected ToO) are submitted to regular CfP of KaVA. Unexpected or urgent ToO can be submitted to ask Director's time at any time. These proposals must include clear triggering criteria to initiate an observation. The ToO is valid for one year when it is approved. The ToO proposals to Director's time should follow the same format of regular call and should be sent to kavaprop@kasi.re.kr.

Recovery Observation

If an open use observation has more than one missing station due to system trouble and/or very severe weather conditions (e.g. strong wind due to a typhoon), the PI can request recovery observations within a year of receiving the correlated data. The PI should resubmit the proposal in which PI should clarify the problems in the previous observations and the necessity of recovery observations for your scientific goal. The KaVA TAC will consider the time allocation of the recovery observations for the next season. If you have any questions, please send an email to kavaprop@kasi.re.kr.


Jongsoo Kim
Director of Radio Astronomy Division, KASI


Mareki Honma
Director of Mizusawa VLBI Observatory, NAOJ

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KaVA ( KVN and VERA Array )