Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008atel.1405....1k&link_type=abstract
The Astronomer's Telegram, #1405
Astronomy and Astrophysics
Astronomy
3
X-Ray, Gamma Ray, Neutron Stars, Pulsars
Scientific paper
Monitoring observations with the PCA instrument (2-60 keV) aboard the Rossi X-ray timing Explorer performed between 2008, February 17 and 26 (43.5 ks exposure in total) revealed the spin-down rate of the newly discovered 70.5 ms pulsar in AX J1838.0-0655 (Gotthelf et al.; ATEL #1392). We obtained a phase coherent timing solution yielding a greatly improved pulse period of 70.4982056(2) ms and a period derivative of 4.94(5)E-14 s/s evaluated at the epoch MJD 54513.0 (TDB).
Hermsen Willem
Klein-Wolt Marc
Kuiper Lucien
Wijnands Rudy
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