Timing Pulsars in Globular Cluster NGC6441

Details Timing Pulsars in Globular Cluster NGC6441 Timing Pulsars in Globular Cluster NGC6441

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20915906f&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #159.06; Bulletin of the American Astronomical Society,

Astronomy and Astrophysics

Astronomy

Scientific paper

We present timing solutions for two binary and two isolated millisecond pulsars in globular cluster NGC6441. Pulsar NGC6441A was discovered during a 1.4 GHz search with the Parkes radio telescope and NGC6441B-D were discovered during a 2 GHz search with the Green Bank Telescope. The spin down rate of NGC6441C was used to constrain the mass to light ratio of the cluster and show that the core mass-to-light ratio is typical for a globular cluster. Pulsar NGC6441A is a highly eccentric binary, allowing us to constrain the pulsar masses using relativistic effects. These constraints suggest a system of a 1.6 Msun pulsar and a 0.8 Msun companion with the possibility of a double neutron star within the errors. This project was supported by NRAO and the NSF REU progr

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