Mass extinction due to oscillation of Sun about the mid-galactic plane

dc.contributor.author	Das, C
dc.contributor.author	Rana, N. C
dc.date.accessioned	2007-04-17T07:13:06Z
dc.date.available	2007-04-17T07:13:06Z
dc.date.issued	1993-06
dc.identifier.citation	BASI, Vol. 21, No.2, pp. 125-133	en
dc.identifier.uri	http://hdl.handle.net/2248/1481
dc.description.abstract	Apparent periodicity was observed in the mass extinction event for the past few hundred million years. Previous investigations suggested the observed period to be somewhat lower than the calculated period of oscillation of the Sun about the galactic plane. Our knowlege of the structure and surface density of the Milky Way has changed radically over the past decade. The present investigation aims to calculate the time period of the Sun's oscillation about the galactic plane using the latest model of the vertical structure of the disc in the solar neighborhood and to see if it matches the extinction periodicity, which it does indeed, but with a quarter, not one-half, of the period of oscillation	en
dc.format.extent	749179 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en	en
dc.publisher	Astronomical Society of India	en
dc.subject	Mass extinction	en
dc.subject	Solar neighbourhood	en
dc.title	Mass extinction due to oscillation of Sun about the mid-galactic plane	en
dc.type	Article	en