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We calculate the accretion disc temperature profiles, disc luminosities andboundary layer luminosities for rapidly rotating neutron stars considering thefull effect of general relativity. We compare the theoretical values of thesequantities with their values inferred from EXOSAT data for four low mass X-raybinary sources: XB 1820-30, GX 17+2, GX 9+1 and GX 349+2 and constrain thevalues of several properties of these sources. According to our calculations,the neutron stars in GX 9+1 and GX 349+2 are rapidly rotating and stifferequations of state are unfavoured.Comment: 9 pages, 5 tables, accepted for publication in A&

A study of accretion discs around rapidly rotating neutron stars in general relativity and its applications to four low mass X–ray binaries