Towards new tests of strong-field gravity with measurements of surface atomic line, redshifts from neutron stars

Simon DeDeo; Dimitrios Psaltis

Towards new tests of strong-field gravity with measurements of surface atomic line, redshifts from neutron stars

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Abstract

To date, studies of neutron stars have focused on better determining the equation of state, whose details are still debated. In this paper, it is argued that the uncertainty in the behavior of strong-field gravity introduces much greater differences in neutron-star properties than do current uncertainties in the neutron-star equations of state. Furthermore, it is shown that new observational developments allow for the measurement of the gravitational redshift of surface atomic lines, which is the cleanest source of information about the mass, radius, and spin of neutron stars.

Original language	English (US)
Article number	141101
Pages (from-to)	141101/1-141101/4
Journal	Physical review letters
Volume	90
Issue number	14
State	Published - Apr 11 2003
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

Cite this

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title = "Towards new tests of strong-field gravity with measurements of surface atomic line, redshifts from neutron stars",

abstract = "To date, studies of neutron stars have focused on better determining the equation of state, whose details are still debated. In this paper, it is argued that the uncertainty in the behavior of strong-field gravity introduces much greater differences in neutron-star properties than do current uncertainties in the neutron-star equations of state. Furthermore, it is shown that new observational developments allow for the measurement of the gravitational redshift of surface atomic lines, which is the cleanest source of information about the mass, radius, and spin of neutron stars.",

author = "Simon DeDeo and Dimitrios Psaltis",

note = "Funding Information: We thank A. Loeb, J. Maldacena, C. Miller, and F. {\"O}zel for useful discussions. S. D. acknowledges the support of an NSF grant. D. P. acknowledges the support of NSF Grant No. PHY-0070928.",

year = "2003",

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language = "English (US)",

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PY - 2003/4/11

Y1 - 2003/4/11

N2 - To date, studies of neutron stars have focused on better determining the equation of state, whose details are still debated. In this paper, it is argued that the uncertainty in the behavior of strong-field gravity introduces much greater differences in neutron-star properties than do current uncertainties in the neutron-star equations of state. Furthermore, it is shown that new observational developments allow for the measurement of the gravitational redshift of surface atomic lines, which is the cleanest source of information about the mass, radius, and spin of neutron stars.

AB - To date, studies of neutron stars have focused on better determining the equation of state, whose details are still debated. In this paper, it is argued that the uncertainty in the behavior of strong-field gravity introduces much greater differences in neutron-star properties than do current uncertainties in the neutron-star equations of state. Furthermore, it is shown that new observational developments allow for the measurement of the gravitational redshift of surface atomic lines, which is the cleanest source of information about the mass, radius, and spin of neutron stars.

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Towards new tests of strong-field gravity with measurements of surface atomic line, redshifts from neutron stars

Abstract

ASJC Scopus subject areas

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