COHERENT MICROWAVE EMISSION AS AN INDICATOR OF NON-THERMAL ENERGY RELEASE AT A CORONAL X-RAY POINT
Journal Title: Solar-Terrestrial Physics - Year 2022, Vol 8, Issue 2
Abstract
A response has been found in a narrow band 5–7 GHz of microwave emission to the appearance of a coronal X-ray point. The emission source is a short X-ray loop located in the tail part of an active region and occurring when magnetic fields are reconnected near the footpoints of high and low loops rooted in nearby magnetic pores of the opposite polarity. The power of energy release is low and no response of the hot plasma component was observed in hard X-rays. Analysis of images in soft X-ray and extreme UV radiation shows that microwave emission has a coherent nature and is generated at a frequency of about twice the plasma frequency by electrons with energies above several tens of keV. The result indicates a high diagnostic potential of microwave observations to detect acceleration processes in weak transitory events and can be useful for observation planning with new generation radioheliographs currently under development.
Authors and Affiliations
Altyntsev A. T. , Meshalkina N. S. , Myshyakov I. I.
Keywords
Related Articles
- EP ID EP706568
- DOI 10.12737/stp-82202201
- Views 81
- Downloads 0
CHROMOSPHERIC K CAII TELESCOPE OF BAIKAL ASTROPHYSICAL OBSERVATORY. NEW LIGHT
In recent years, most results of CaII studies of the solar chromosphere in H and K lines have been based on observations with narrow passband filters. The Baikal Observatory’s full-disk chromospheric telescope for the K...
SIMULATION STUDY OF THE ENERGETIC NEUTRAL ATOM (ENA) IMAGING MONITORING OF THE GEOMAGNETOSPHERE ON A LUNAR BASE
Since the moon’s revolution cycle is exactly the same as its rotation cycle, we can only see the moon always facing Earth in the same direction. Based on the clean particle radiation environment of the moon, a neutral at...
GEOMAGNETIC DATA RECOVERY APPROACH BASED ON THE CONCEPT OF DIGITAL TWINS
There is no ground-based magnetic station or observatory that guarantees the quality of information received and transmitted to it. Data gaps, outliers, and anomalies are a common problem affecting virtually any ground-b...
MONITORING OF GEOMAGNETIC DISTURBANCES USING THE GLOBAL SURVEY METHOD IN REAL TIME
A method for forecasting geomagnetic storms using the realization of the global survey method in real time is presented. The method is based on data from the worldwide network of neutron monitors NMDB. Using this method,...
DIAMAGNETIC STRUCTURES AS A BASIS OF QUASI-STATIONARY SLOW SOLAR WIND
The results presented in this review reflect the fundamentals of the modern understanding of the nature of the structure of the slow solar wind (SW) along the entire length from the Sun to the Earth's orbit. It is known...