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Daily monitor of Sagittarius A* at 22 GHz with the Japanese VLBI Network

Published online by Cambridge University Press:  22 May 2014

M. Tsuboi ,
Y. Asaki ,
Y. Yonekura ,
Y. Miyamoto ,
H. Kaneko ,
M. Seta ,
N. Nakai ,
O. Kameya ,
M. Miyoshi  and
H. Takaba
...Show all authors
M. Tsuboi
Affiliation:
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan email: tsuboi@vsop.isas.jaxa.jp
Y. Asaki
Affiliation:
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan email: tsuboi@vsop.isas.jaxa.jp
Y. Yonekura
Affiliation:
Center for Astronomy, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
Y. Miyamoto
Affiliation:
Center for Astronomy, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
H. Kaneko
Affiliation:
University of Tsukuba, 1-1-1 Ten-noudai, Tsukuba, Ibaraki 305-8571, Japan
M. Seta
Affiliation:
University of Tsukuba, 1-1-1 Ten-noudai, Tsukuba, Ibaraki 305-8571, Japan
N. Nakai
Affiliation:
University of Tsukuba, 1-1-1 Ten-noudai, Tsukuba, Ibaraki 305-8571, Japan
O. Kameya
Affiliation:
Mizusawa VLBI Observatory, National Astronomical Observatory of Japan, Mizusawa, Oshu, Iwate, 023-0861Japan
M. Miyoshi
Affiliation:
National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588, Japan
H. Takaba
Affiliation:
Gifu University, 1-1 Yanagido, Gifu, Gifu 501-1193, Japan
K. Wakamatsu
Affiliation:
Gifu University, 1-1 Yanagido, Gifu, Gifu 501-1193, Japan
Y. Fukuzaki
Affiliation:
Geospatial Information Authority of Japan, Tsukuba, Ibaraki 305-0811, Japan
T. Morimitsu
Affiliation:
The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
K. Uehara
Affiliation:
The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
M. Sekido
Affiliation:
National Institute of Information and Communications Technology, Kashima, Ibaraki 314-8501, Japan
T. Oka
Affiliation:
Keio University, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
S. Takekawa
Affiliation:
Keio University, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
T. Omodaka
Affiliation:
Kagoshima University, Kagoshima, Kagoshima, 890-0065, Japan
T. Handa
Affiliation:
Kagoshima University, Kagoshima, Kagoshima, 890-0065, Japan
A. Takumi
Affiliation:
The Open University of Japan, Mihama-ku, Chiba 261- 8586, Japan
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Abstract

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We have been monitoring the flux density of Sagittarius A* (Sgr A*) at 22 GHz since DOY=42 (11 Feb. 2013) with a sub-array of the Japanese VLBI Network in order to search the increase of 22-GHz emission from Sgr A* induced by the interaction of the G2 cloud with the accretion disk. The flux densities observed until DOY=322 (18 Nov. 2013) are consistent with the previously observed values before the approaching of the cloud. We have detected no large flare during this period.

Keywords

Galaxy: center — galaxies: active — galaxies: nuclei
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S303: The Galactic Center: Feeding and Feedback in a Normal Galactic Nucleus , October 2013 , pp. 382 - 384
Copyright
Copyright © International Astronomical Union 2014 

References

Gillessen, S., et al., 2012 Nature 481, 51CrossRefGoogle Scholar
Lo, K. Y., et al., 1985 Nature 315, 124CrossRefGoogle Scholar
Sadowski, A., Narayan, R., Sironi, L., Özel, F. 2013 MNRAS 433, 2165Google Scholar
Tsuboi, , et al. 2013, ATEL 4923Google Scholar
Tsuboi, , et al. 2013, ATEL 5013Google Scholar
Tsuboi, , et al. 2013, ATEL 5184Google Scholar