Towards New Tests of Strong-Field Gravity with Measurements of Surface Atomic Line Redshifts from Neutron Stars

Simon DeDeo, Dimitrios Psaltis

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

In contrast to gravity in the weak-field regime, which has been subject to numerous experimental tests, gravity in the strong-field regime is largely unconstrained by observations. We show that gravity theories that pass solar system tests, but that diverge from general relativity in the strong-field regime, predict neutron stars with significantly different properties than their general relativistic counterparts. The range of redshfits of surface atomic lines predicted by such theories is significantly wider than the uncertainty introduced by our lack of knowledge of the equation of state of ultradense matter. Measurements of such lines with x-ray observatories can thus put new constraints on strong-field gravity.

Original languageEnglish (US)
Pages (from-to)4
Number of pages1
JournalPhysical review letters
Volume90
Issue number14
DOIs
StatePublished - 2003

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Towards New Tests of Strong-Field Gravity with Measurements of Surface Atomic Line Redshifts from Neutron Stars'. Together they form a unique fingerprint.

Cite this