Relativistic deflection of background starlight measures the mass of a nearby white dwarf star-Reference-Cited by-同舟云学术

Relativistic deflection of background starlight measures the mass of a nearby white dwarf star

Published:2017-06-09 Issue:6342 Volume:356 Page:1046-1050
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Sahu Kailash C.¹^ORCID,Anderson Jay¹^ORCID,Casertano Stefano¹,Bond Howard E.²^ORCID,Bergeron Pierre³,Nelan Edmund P.¹^ORCID,Pueyo Laurent¹,Brown Thomas M.¹^ORCID,Bellini Andrea¹^ORCID,Levay Zoltan G.¹^ORCID,Sokol Joshua¹,Dominik Martin⁴^ORCID,Calamida Annalisa¹^ORCID,Kains Noé¹^ORCID,Livio Mario⁵

Affiliation:

1. Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA.

2. Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802, USA.

3. Département de Physique, Université de Montréal, C.P. 6128, Succ. Centre-Ville, Montréal, QC H3C 3J7, Canada.

4. University of St Andrews, School of Physics and Astronomy, North Haugh, St Andrews, KY16 9SS, UK.

5. Department of Physics and Astronomy, University of Nevada, Las Vegas, 4505 South Maryland Parkway, Las Vegas, NV 89154, USA.

Abstract

General relativity weighs a white dwarf Light from a background star is deflected by the gravitational field of the Sun. This effect was used in 1919 to provide some of the first evidence for general relativity. Sahu et al. applied the concept to another star: a nearby white dwarf called Stein 2051 B, which passed close in front of a more distant normal star (see the Perspective by Oswalt). The authors measured the tiny shifts in the apparent position of the background star, an effect called astrometric microlensing. The apparent motion matched the predictions of general relativity, which allowed the authors to determine the mass of the white dwarf. Science , this issue p. 1046 ; see also p. 1015

Funder

National Aeronautics and Space Administration

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference56 articles.

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