On the evaluation of magnetic shear from H-alpha pictures

dc.contributor.author	Venkatakrishnan, P
dc.date.accessioned	2008-07-25T05:44:09Z
dc.date.available	2008-07-25T05:44:09Z
dc.date.issued	1993-01-10
dc.identifier.citation	Solar physics, Vol. 143, No. 2, pp. 385 - 387	en
dc.identifier.issn	0038-0938
dc.identifier.uri	http://hdl.handle.net/2248/2876
dc.description.abstract	It is shown that pre-flare activity in H-alpha filaments is unrelated to changes in magnetic shear. Changes in the shear angle are found to be related to either redeployment of the sources of magnetic flux relative to the main sunspots or to the emergence of new flux. Without involving any measure of the transverse magnetic field, it is difficult to link changes in the shear angle with changes in magnetic shear. It is also determined that non-potential magnetic fields are necessary for the occurrence of flares.	en
dc.format.extent	341064 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en	en
dc.publisher	Kluwer Academic Publishers	en
dc.relation.uri	http://adsabs.harvard.edu/abs/1993SoPh..143..385V	en
dc.subject	H alpha line	en
dc.subject	Solar magnetic field	en
dc.subject	Solar physics	en
dc.subject	Solar prominences	en
dc.subject	Solar flares	en
dc.subject	Sunspots	en
dc.title	On the evaluation of magnetic shear from H-alpha pictures	en
dc.type	Article	en