Twenty-One Millisecond Pulsars in Terzan 5 Using the Green Bank Telescope-Reference-Cited by-同舟云学术

Twenty-One Millisecond Pulsars in Terzan 5 Using the Green Bank Telescope

Published:2005-02-11 Issue:5711 Volume:307 Page:892-896
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Ransom Scott M.¹²³⁴⁵,Hessels Jason W. T.¹²³⁴⁵,Stairs Ingrid H.¹²³⁴⁵,Freire Paulo C. C.¹²³⁴⁵,Camilo Fernando¹²³⁴⁵,Kaspi Victoria M.¹²³⁴⁵,Kaplan David L.¹²³⁴⁵

Affiliation:

1. National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903, USA.

2. Department of Physics, McGill University, 3600 University Street, Montreal, QC H3A 2T8, Canada.

3. Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, Canada.

4. National Astronomy and Ionosphere Center, Arecibo Observatory, HC03 Box 53995, PR 00612, USA.

5. Columbia Astrophysics Laboratory, Columbia University, 550 West 120th Street, New York, NY 10027, USA.

Abstract

We have identified 21 millisecond pulsars (MSPs) in globular cluster Terzan 5 by using the Green Bank Telescope, bringing the total of known MSPs in Terzan 5 to 24. These discoveries confirm fundamental predictions of globular cluster and binary system evolution. Thirteen of the new MSPs are in binaries, of which two show eclipses and two have highly eccentric orbits. The relativistic periastron advance for the two eccentric systems indicates that at least one of these pulsars has a mass 1.68 times greater than the mass of the Sun at 95% confidence. Such large neutron star masses constrain the equation of state of matter at or beyond the nuclear equilibrium density.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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