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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

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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

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