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arXiv · astro-ph/0207274

Microflaring of a solar Bright point

O. Vilhu·J. Huovelin·S. Pohjolainen·J. Virtanen·W. Curdt
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Abstract

A solar X-ray Bright point (BP) was observed with the SUMER-spectrograph of the SOHO-observatory. The data consist of four far-UV spectral lines formed between 2 10^4 - 6 10^5 K, with 2 arcsec spatial, 2.8 min temporal and 4 km/s spectral resolution. A striking feature is the strong microflaring and appearance of several short lived transients. Using simultaneous magnetic field measurements the region observed seemed to lie above a cancelling flux region. With respect to the filling factor and emission measure this particular BP was similar to the average surface of a moderately active solar type star.

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O. Vilhu, J. Huovelin, S. Pohjolainen, J. Virtanen, W. Curdt. 2002-07-12. Microflaring of a solar Bright point. https://doi.org/10.1051/0004-6361%3A20021024

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