Radio Continuum and Type III Bursts Associated with Coronal X-Ray Structures

Details Radio Continuum and Type III Bursts Associated with Coronal X-Ray Structures Radio Continuum and Type III Bursts Associated with Coronal X-Ray Structures

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...472..874r&link_type=abstract

Astrophysical Journal v.472, p.874

Astronomy and Astrophysics

Astronomy

5

Sun: X-Rays, Gamma Rays, Sun: Corona, Sun: Radio Radiation

Scientific paper

In this paper, we report the detection of a metric continuum burst source at the top of a coronal loop observed in soft X-rays. The continuum burst was probably a flare continuum that lasted more than 1 hr. This is the first observation of such metric continuum emission produced by energetic electrons with high-spatial resolution imaging instruments in both X-rays and radio. The nonthermal radio emission appears to be associated with the rupture of a part of the loop top and the ejection of soft X-ray plasma at the top of the coronal loop. We have also identified X-ray coronal structures in which type III emitting electron beams propagate. The metric continuum is most likely caused by second-harmonic plasma emission, and the electron density in the soft X-ray structure where type Ills are observed is close to the critical plasma density derived from radio observations.

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