Thermodynamic history of a solar active region observed in X-rays

Details Thermodynamic history of a solar active region observed in X-rays Thermodynamic history of a solar active region observed in X-rays

Dec 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...210l.153t&link_type=abstract

Astrophysical Journal, vol. 210, Dec. 15, 1976, pt. 2, p. L153-L157.

Astronomy and Astrophysics

Astronomy

3

Energy Budgets, Solar Activity, Solar Corona, Solar X-Rays, Thermodynamic Properties, X Ray Astronomy, Apollo Telescope Mount, Data Reduction, Energy Dissipation, Faculae, Heat Balance, Radiant Flux Density, Solar Physics, Solar Temperature, Spaceborne Astronomy

Scientific paper

The structure and energy content of an active coronal volume during its early history are investigated using soft X-ray images secured with the glancing-incidence telescope on Skylab. During the late stages of emerging-flux-region activity, the maximum temperatures exceeded 6.5 million K. At that time, the temporal rate of change in thermal energy content was about 10 to the 25th power ergs/s and was comparable to the rate of energy loss by radiation. Fluctuations in the energy content of the X-ray source region imply that this coronal active region was probably not in energy equilibrium during the five days of observation.

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