Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
DETECTION OF THE NEUPERT EFFECT IN THE CORONA OF AN RS CANUM VENATICORUM BINARY SYSTEM BY XMM-NEWTON AND THE VERY LARGE ARRAY
 

Summary: DETECTION OF THE NEUPERT EFFECT IN THE CORONA OF AN RS CANUM VENATICORUM
BINARY SYSTEM BY XMM-NEWTON AND THE VERY LARGE ARRAY
Manuel Gu¨del, Marc Audard, and Kester W. Smith1
Paul Scherrer Institut, Wu¨renlingen und Villigen, CH-5232 Villigen PSI, Switzerland; guedel@astro.phys.ethz.ch, audard@astro.phys.ethz.ch,
kester@astro.phys.ethz.ch
Ehud Behar
Columbia Astrophysics Laboratory, Columbia University, 550 West 120th Street, New York, NY 10027; behar@astro.columbia.edu
Anthony J. Beasley
Owens Valley Radio Observatory, California Institute of Technology, Big Pine, CA 93513; tbeasley@ovro.caltech.edu
and
Rolf Mewe
SRON National Institute for Space Research, Sorbonnelaan 2, 3584 CA Utrecht, The Netherlands; r.mewe@sron.nl
Received 2001 September 4; accepted 2002 May 30
ABSTRACT
The RS CVn­type binary Geminorum was observed during a large, long-duration flare simultaneously
with XMM-Newton and the Very Large Array. The light curves show a characteristic time dependence that is
compatible with the Neupert effect observed in solar flares: the time derivative of the X-ray light curve resem-
bles the radio light curve. This observation can be interpreted in terms of a standard flare scenario in which
accelerated coronal electrons reach the chromosphere, where they heat the cool plasma and induce chromo-
spheric evaporation. Such a scenario can hold only if the amount of energy in the fast electrons is sufficient to

  

Source: Audard, Marc - INTEGRAL Science Data Centre & Observatory of Geneva, Université de Genčve

 

Collections: Physics