Hostname: page-component-78c5997874-j824f Total loading time: 0 Render date: 2024-11-10T21:07:19.314Z Has data issue: false hasContentIssue false
  • English
  • Français

An OH maser flare with a strong magnetic field in W75N

Published online by Cambridge University Press:  01 March 2007

V. I. Slysh  and
V. Migenes
V. I. Slysh
Affiliation:
Astro Space Center, Lebedev Physical Institute, 84/32 Profsoyuznaya, Moscow, 117997 email: vslsysh@asc.rssi.ru
V. Migenes
Affiliation:
Department of Astronomy, University of Guanajuato, P.O. Box 144, Guanajuato, GTO. Mexico 36000, email: vmigenes@astro.ugto.mx
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

A flare of OH maser emission was discovered in W75N in 2000. Its location was determined with the VLBA to be within 110 AU from one of the ultra-compact HII regions, VLA2. The flare consisted of several maser spots. Four of the spots were found to form Zeeman pairs, all of them with a magnetic field strength of about 40 mG. This is the highest ever magnetic field strength found in OH masers, an order of magnitude higher than in typical OH masers. We discuss the possible source for the enhanced magnetic field and its relation to the flare event.

Keywords

ISM:magnetic fieldsstars: flaremaser
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S242: Astrophysical Masers and their Environments , March 2007 , pp. 166 - 167
Copyright
Copyright © International Astronomical Union 2008

References

Alakoz, A. V., Slysh, V. I., Popov, M. V. & Val'tts, I. E., 2005, Astron. Letters 31, 375CrossRefGoogle Scholar
Fish, V. L., Reid, M. J., Argon, A. L. & Zheng, X.-W., 2005, ApJS 160, 220CrossRefGoogle Scholar
Slysh, V. I., Migenes, V., Val'tts, I. E., Lyubchenko, S. Yu., Horiuchi, S., Altunin, V. I., Fomalont, E. B. & Inoue, M., 2002, ApJ 564, 317CrossRefGoogle Scholar
Torrelles, J. M. et al. , 2003, ApJL 598, L115CrossRefGoogle Scholar