VERA Observation of the W49NH2O Maser Outburst in 2003 October | Zendy

Honma Mareki | Zendy; Yoon Kyung Choi | Zendy; Takeshi Bushimata | Zendy; Takahiro Fujii | Zendy; Tomoya Hirota | Zendy; K. Horiai | Zendy; Hiroshi Imai | Zendy; Noritomo Inomata | Zendy; J. Ishitsuka | Zendy; Kenzaburo Iwadate | Zendy; Takaaki Jike | Zendy; Osamu Kameya | Zendy; Ryuichi Kamohara | Zendy; Yukitoshi Kanya | Zendy; Noriyuki Kawaguchi | Zendy; Hideyuki Kobayashi | Zendy; Seisuke Kuji | Zendy; Tomoharu Kurayama | Zendy; Seiji Manabe | Zendy; Takeshi Miyaji | Zendy; Akiharu Nakagawa | Zendy; Kouichirou Nakashima | Zendy; Riiko Nagayoshi | Zendy; Toshihiro Omodaka | Zendy; Tomoaki Oyama | Zendy; María Rioja | Zendy; Satoshi Sakai | Zendy; Sei-ichiro Sakakibara | Zendy; Katsuhisa Sato | Zendy; Tetsuo Sasao | Zendy; Katsunori M. Shibata | Zendy; Rie Shimizu | Zendy; Kasumi Sora | Zendy; Hiroshi Suda | Zendy; Yoshiaki Tamura | Zendy; Kazuyoshi Yamashita | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

VERA Observation of the W49NH₂O Maser Outburst in 2003 October

Author(s) -

Honma Mareki,

Yoon Kyung Choi,

Takeshi Bushimata,

Takahiro Fujii,

Tomoya Hirota,

K. Horiai,

Hiroshi Imai,

Noritomo Inomata,

J. Ishitsuka,

Kenzaburo Iwadate,

Takaaki Jike,

Osamu Kameya,

Ryuichi Kamohara,

Yukitoshi Kanya,

Noriyuki Kawaguchi,

Hideyuki Kobayashi,

Seisuke Kuji,

Tomoharu Kurayama,

Seiji Manabe,

Takeshi Miyaji,

Akiharu Nakagawa,

Kouichirou Nakashima,

Riiko Nagayoshi,

Toshihiro Omodaka,

Tomoaki Oyama,

María Rioja,

Satoshi Sakai,

Sei-ichiro Sakakibara,

Katsuhisa Sato,

Tetsuo Sasao,

Katsunori M. Shibata,

Rie Shimizu,

Kasumi Sora,

Hiroshi Suda,

Yoshiaki Tamura,

Kazuyoshi Yamashita

Publication year - 2004

Publication title -

publications of the astronomical society of japan

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.99

H-Index - 110

eISSN - 2053-051X

pISSN - 0004-6264

DOI - 10.1093/pasj/56.3.l15

Subject(s) - physics , very long baseline interferometry , maser , astrophysics , shock front , astronomy , shock (circulatory) , shock wave , medicine , thermodynamics

We report on a strong outburst of the W49N H2O maser observed with VERA.Single-dish monitoring with VERA 20 m telescopes detected a strong outburst ofthe maser feature at V_LSR = -30.7 km/s in 2003 October. The outburst had aduration of ~100 days and a peak intensity of 7.9 x 10^4 Jy, being one of thestrongest outbursts in W49N observed so far. VLBI observations with the VERAarray were also carried out near to the maximum phase of the outburst, and theoutburst spot was identified in the VLBI map. While the map was in goodagreement with previous studies, showing three major concentrations of maserspots, we found a newly formed arc-like structure in the central maserconcentration, which may be a shock front powered by a forming star or a starcluster. The outburst spot was found to be located on the arc-like structure,indicating a possible connection of the present outburst to a shock phenomenon.Comment: 4 pages, 2 figures included, to appear in PASJ letter (Vol.56, #3, 2004 June

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research