First Measurement of the Gravitational Redshift at the Surface of a Neutron Star

Details First Measurement of the Gravitational Redshift at the Surface of a Neutron Star First Measurement of the Gravitational Redshift at the Surface of a Neutron Star

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002cxo..prop.1231p&link_type=abstract

Chandra Proposal ID #04500813

Physics

Chandra Proposal Id #04500813

Scientific paper

Chandra observations of 1E1207.4-5209, the neutron star (NS) in the PKS 1209-51/52 SNR, allowed us to discover absorption features in the NS thermal spectrum. This discovery provides a unique opportunity to measure the NS mass and radius and constrain the equation of state. We interpret the features as lines of once-ionized helium formed in the NS atmosphere with a magnetic field of 150 Teragauss, which implies a radius of 9-14 km for a one-solar-mass NS. To measure accurate line energies and resolve potentially multiple lines blended in the low-resolution CCD spectrum, we propose a deep observation with ACIS/LETG. This observation will provide a high-resolution phase-resolved spectrum, required for precise measurement of the NS mass and radius.

Affiliated with

Also associated with

No associations

Rating

First Measurement of the Gravitational Redshift at the Surface of a Neutron Star does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with First Measurement of the Gravitational Redshift at the Surface of a Neutron Star, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and First Measurement of the Gravitational Redshift at the Surface of a Neutron Star will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1042463