Hostname: page-component-848d4c4894-v5vhk Total loading time: 0 Render date: 2024-06-29T18:56:36.012Z Has data issue: false hasContentIssue false
  • English
  • Français

A Flare on AD Leo observed in Optical, UV and Microwaves

Published online by Cambridge University Press:  27 September 2017

P.B. Byrne  and
D.E. Gary
P.B. Byrne
Affiliation:
Armagh Observatory, Armagh BT61 90G, N Ireland
D.E. Gary
Affiliation:
Solar Astronomy, Caltech, Pasadena CA 91125, USA

Summary

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.

We report a simultaneous IUE, VLA and ground-based photometric observation of a flare on the dMe star, AD Leo, on 2nd February 1903. The optical flare was extremely impulsive, lasting in total only about 3 mins. A relatively longlived 6 cm flare was observed with the VLA which was initially 100% polarized. An IUE spectrum, taken ≈ 8 min after the onset of the optical U band flare, shows motu than a factor of 2 increase in the Ha II λ 1640Å emission line. The other mid-transition region lines such as C IV λλ154B/52Å show almost no response.

Type
Session I: Stellar Flares
Information
International Astronomical Union Colloquium , Volume 104 , Issue 2: Solar and Stellar Flares , 1989 , pp. 63 - 66
Copyright
Copyright © Kluwer 1989

References

Byrne, P.B., Butler, C.J., Andrews, A.D., Rodono, M., Catalano, S., Pazzani, V., Linsky, J.L., Bornman, P., Haisch, B.M.: 1983, Inf. Bull. Var. Stars, No. 2258.Google Scholar
Byrne, P.B., Doyle, J.G.: 1988, Astron. Astrophys., in press.Google Scholar
Byrne, P.B., Brown, A., Butler, C.J., Gary, D.E., Linsky, J.L., Simon, T.: 1989, in preparationGoogle Scholar
Gary, D.E., Byrne, P.B., Butler, C.J.: 1988, in Cool Stars, Stellar Systems and the Sun, Eds. Linsky, J.L. and Stencel, R.E., Lecture Notes in Physics, No. 291. Publ. Springer-Verlag, p. 106.CrossRefGoogle Scholar
Kohl, J.L.: 1977, Astrophys. J., 211, 958.Google Scholar