Observations of the birth of a small coronal hole

Autor:	J. T. Nolte, C. V. Solodyna, Allen S. Krieger
Rok vydání:	1977
Předmět:	Physics X-ray astronomy Astrophysics::High Energy Astrophysical Phenomena Equator Astronomy Coronal hole Astronomy and Astrophysics Coronal loop Astrophysics Light curve Rotation Corona Space and Planetary Science Astrophysics::Solar and Stellar Astrophysics Diffusion (business)
Zdroj:	Solar Physics. 54:123-134
ISSN:	1573-093X 0038-0938
Popis:	Using soft X-ray data from the S-054 X-ray spectrographic telescope aboard Skylab, we observed temporal changes in the emission structure of the X-ray corona associated with the birth of a small coronal hole. Designated as CH6, this coronal hole was born near the equator in a time interval less than 9 1/2 hr. By constructing a light curve for a point near the center of CH6, we observed a sudden 40% decrease in X-ray emission associated with the birth of this coronal hole. On a time scale of hours, the growth of CH6 in area proceeded faster than the average rate predicted by the diffusion of solar fields. The short term decay of CH6 followed the diffusive rate to within experimental uncertainty, On a time scale of one rotation, the subsequent development of CH6 was not consistent with steady growth at the average rate predicted by diffusion.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d5cb20dfccf3c81c32bc0fb427751fb4 https://doi.org/10.1007/bf00146428 Zobrazit plný text záznamu Full text from SpringerLink