Can HST Measure the Mass of the Isolated Neutron Star RX J185635-3754 ?
Bohdan Paczynski
TL;DR
This paper proposes using high-precision astrometric measurements during a close approach to determine the mass of an isolated neutron star through gravitational lensing effects.
Contribution
It introduces a method to measure neutron star mass by observing gravitational lensing during a predicted close approach.
Findings
Potential to measure neutron star mass with high precision
Method relies on astrometric displacement caused by lensing
Event duration approximately one year
Abstract
In June 2003 the isolated neutron star RX J185635-3754 will pass within 0.3'' of a 26.5 mag star, changing its position by about 0.6 mas. The displacement, caused by gravitational lensing, will be proportional to the neutron star mass. The total event duration will be approximately 1 year.
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Taxonomy
TopicsPulsars and Gravitational Waves Research · Geophysics and Gravity Measurements · Geophysics and Sensor Technology