Abstract
Variations of primary cosmic ray rigidity spectrum occurring at typical Forbush decreases in the geomagnetically sensitive range are studied. Selected events are grouped in two classes according to the degree of associated geomagnetic perturbation. It is shown that the systematic differences between the two classes, arising when spectral variation is derived from the latitude effect of the amplitude of nucleonic intensity decrease, do practically vanish when tests independent of any variation on the geomagnetic field are applied. For events of the geomagnetically quiet group an inverse power law δD(R)/D(R)=−BR−k with an exponentk lower than unity is found to approximate well all the analyzed experimental data.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
