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Study of X‐ray pulsars Cep X‐4 and 4U 1907+09
Author(s) -
Agrawal P.C.,
Mukerjee K.,
Paul B.,
Rao A.R.,
Seetha S.,
Kasturirangan K.
Publication year - 1999
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/1521-3994(199908)320:4/5<346::aid-asna346>3.0.co;2-o
Subject(s) - pulsar , physics , astrophysics , x ray pulsar , pulse (music) , x ray , satellite , astronomy , optics , detector
The X‐ray pulsars Cep X‐4 and 4U 1907+09 were observed with the pointed mode proportional counters(PPCs) of Indian X‐ray Astronom Experiment(IXAE) on IRS‐P3 satellite. Detailed studies of pulse profile of Cep X‐4 revealed an interpulse dominated double‐pulse profile. In the case of pulsar 4U 1907+09, the pulse period measurements indicate spindown of the pulsar with $\dot P$ = +0.21 s yr —1 using the IXAE observations.