K parameter analysis of the radio emission region of pulsars

Using a new method of multi-frequency of K parameter, we estimate the ratio of altitudes of radio emission region of pulsars at 430 and 1418 MHz. The value of the ratio is 1.34+/-0.12 and the power law index of altitude-frequency is 0.24+/-0.08. It is indicated that the lower radio frequencies originate further out and the emission region is radially narrow.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000079124600026&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Physics, MultidisciplinarySCI(E)中国科学引文数据库(CSCD)4ARTICLE174-751