Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session H11: Thermodynamic and Mathematical Aspects of Gravity
10:45 AM–12:33 PM,
Sunday, April 14, 2019
Sheraton
Room: Governor's Square 17
Sponsoring
Unit:
DGRAV
Chair: David Garfinkle, Oakland University
Abstract: H11.00003 : An Entropy-Area Law for Neutron Stars Near the Black Hole Threshold*
11:09 AM–11:21 AM
View Presentation Abstract
Presenter:
Nicolas Yunes
(Montana State University)
Authors:
Stephon Alexander
(Brown University)
Kent Yagi
(University of Virginia)
Nicolas Yunes
(Montana State University)
Neutron stars have been shown to exhibit a set of universal relations independent of their equation of state that bears semblance to the black hole no hair relations. In this talk, I will show that a rescaled entropy measure also possesses nearly universal behavior for an equilibrium sequence of isolated neutron stars constructed numerically. Moreover, as the stellar compactness (or central density) in the sequence is increased, the degree of universality increases, the entropy approaches the black hole limit, and the entropy scales more and more with the stellar surface area instead of the stellar volume. All of these results point strongly to the existence of an entropy-area law for neutron stars near the threshold of gravitational collapse.
*KY acknowledges support from NSF Award PHY-1806776 and networking support by the COST Action GWverse CA16104. NY acknowledges support from NASA EPSCoR award 80NSSC17M0041 and NSF grant W7386.
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