Junctions and thin shells in general relativity using computer algebra: II. The null formalism

Details Junctions and thin shells in general relativity using computer algebra: II. The null formalism Junctions and thin shells in general relativity using computer algebra: II. The null formalism

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997cqgra..14.1285m&link_type=abstract

Classical and Quantum Gravity, Volume 14, Issue 5, pp. 1285-1294 (1997).

Computer Science

7

Scientific paper

We present extensions to the GRJunction computer algebra program, which allow the study of null boundary surfaces and thin shells in general relativity. We summarize the null formalism due to Barrabès and Israel and highlight those steps which differ from the timelike/spacelike cases. GRJunction has been used to verify a number of results from the literature. We then present two new results calculated with the aid of GRJunction. These are the junction of two Kerr - Newman solutions at a non-horizon straddling null shell in the slow rotation limit and the exact junction of two Kerr - Newman solutions at a horizon straddling shell.

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