First Soft X-Ray Observations of Global Coronal Waves with the GOES Solar X-Ray Imager

Details First Soft X-Ray Observations of Global Coronal Waves with the GOES Solar X-Ray Imager First Soft X-Ray Observations of Global Coronal Waves with the GOES Solar X-Ray Imager

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005apj...626l.121w&link_type=abstract

The Astrophysical Journal, Volume 626, Issue 2, pp. L121-L124.

Astronomy and Astrophysics

Astronomy

33

Sun: Activity, Sun: Chromosphere, Sun: Corona, Sun: X-Rays, Gamma Rays, Waves

Scientific paper

We present the first observations of global coronal waves obtained with the Solar X-Ray Imager (SXI) aboard the GOES-12 satellite. Focusing on six events, the basic morphological and kinematic characteristics of the waves observed in soft X-rays are derived. Taking advantage of SXI's high temporal cadence and comparing the wave signatures with extreme-UV, Hα, and He I data, we prove that both chromospheric and coronal signatures of waves can be created by a single decelerating disturbance, presumably a large-amplitude simple wave or shock. We stress that SXI is a very useful tool for studying coronal waves and other transients because of its high cadence and duty cycle.

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