Journal ArticleDOI
Masses, parallax, and relativistic timing of the PSR J1713+0747 binary system
TLDR
In this article, the relativistic Shapiro delay, perturbations of pulsar orbital elements due to secular and annual motion of the Earth, and the pulsar's parallax were measured with uncertainties as small as 200 ns.Abstract:
We report on 12 years of observations of PSR J1713+0747, a pulsar in a 68 day orbit with a white dwarf. Pulse times of arrival were measured with uncertainties as small as 200 ns. The timing data yielded measurements of the relativistic Shapiro delay, perturbations of pulsar orbital elements due to secular and annual motion of the Earth, and the pulsar's parallax, as well as pulse spin-down, astrometric, and Keplerian measurements. The observations constrain the masses of the pulsar and secondary star to be m1 = 1.3 ± 0.2 M☉ and m2 = 0.28 ± 0.03 M☉, respectively (68% confidence). Combining the theoretical orbital period-core mass relation with the observational constraints yields a somewhat higher pulsar mass, m1 = 1.53 M☉. The parallax is π = 0.89 ± 0.08 mas, corresponding to a distance of 1.1 ± 0.1 kpc; the precision of the parallax measurement is limited by uncertainties in the electron content of the solar wind. The transverse velocity is unusually small, 33 ± 3 km s-1. We find significant timing noise on timescales of several years, but no more than expected by extrapolating timing noise statistics from the slow pulsar population. With the orientation of the binary orbit fully measured, we are able to improve on previous tests of equivalence principle violations.read more
Citations
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Neutron star observations: Prognosis for equation of state constraints
TL;DR: In this article, the authors investigate how current and proposed observations of neutron stars can lead to an understanding of the state of their interiors and the key unknowns: the typical neutron star radius and the neutron star maximum mass.
Journal ArticleDOI
TEMPO2, a new pulsar-timing package - I. An overview
TL;DR: TEMPO2 as discussed by the authors is a new pulsar-timing package that contains propagation and other relevant effects implemented at the 1-ns level of precision (a factor of ∼100 more precise than previously obtainable).
Journal ArticleDOI
The second fermi large area telescope catalog of gamma-ray pulsars
A. A. Abdo,A. A. Abdo,Marco Ajello,Alice Allafort,Luca Baldini,Jean Ballet,Guido Barbiellini,Guido Barbiellini,Matthew G. Baring,Denis Bastieri,Denis Bastieri,Andrea Belfiore,Andrea Belfiore,Andrea Belfiore,Ronaldo Bellazzini,Bhaswati Bhattacharyya,Elisabetta Bissaldi,E. D. Bloom,Emanuele Bonamente,Emanuele Bonamente,Eugenio Bottacini,Terri Brandt,Johan Bregeon,M. Brigida,M. Brigida,P. Bruel,R. Buehler,M. Burgay,T. H. Burnett,G. Busetto,G. Busetto,S. Buson,S. Buson,G. A. Caliandro,R. A. Cameron,Fernando Camilo,Fernando Camilo,P. A. Caraveo,J. M. Casandjian,C. Cecchi,C. Cecchi,Omer Celik,Omer Celik,Eric Charles,Sylvain Chaty,R. C. G. Chaves,A. Chekhtman,A. Chekhtman,A. W. Chen,James Chiang,G. Chiaro,Stefano Ciprini,R. Claus,Ismaël Cognard,Johann Cohen-Tanugi,L. R. Cominsky,Jan Conrad,S. Cutini,Filippo D'Ammando,A. De Angelis,M. E. DeCesar,M. E. DeCesar,A. De Luca,P. R. den Hartog,F. de Palma,F. de Palma,Charles D. Dermer,Gregory Desvignes,Gregory Desvignes,Seth Digel,L. Di Venere,Persis S. Drell,Alex Drlica-Wagner,R. Dubois,D. Dumora,Cristobal M. Espinoza,L. Falletti,C. Favuzzi,C. Favuzzi,Elizabeth C. Ferrara,W. B. Focke,A. Franckowiak,Paulo C. C. Freire,Stefan Funk,P. Fusco,P. Fusco,F. Gargano,Dario Gasparrini,S. Germani,S. Germani,Nicola Giglietto,Nicola Giglietto,Paolo Giommi,Francesco Giordano,Francesco Giordano,Marcello Giroletti,T. Glanzman,G. Godfrey,Eric V. Gotthelf,I. A. Grenier,M.-H. Grondin,M.-H. Grondin,J. E. Grove,L. Guillemot,Sylvain Guiriec,D. Hadasch,Y. Hanabata,Alice K. Harding,M. Hayashida,M. Hayashida,E. Hays,Jason W. T. Hessels,Jason W. T. Hessels,John W. Hewitt,A. B. Hill,A. B. Hill,D. Horan,Xian Hou,R. E. Hughes,Miranda Jackson,Miranda Jackson,Gemma H. Janssen,T. Jogler,Gudlaugur Johannesson,R. P. Johnson,A. S. Johnson,Tyrel J. Johnson,Tyrel J. Johnson,W. N. Johnson,Simon Johnston,T. Kamae,Jun Kataoka,Michael Keith,Matthew Kerr,Jürgen Knödlseder,Jürgen Knödlseder,Michael Kramer,Michael Kramer,M. Kuss,J. Lande,S. Larsson,Luca Latronico,Marianne Lemoine-Goumard,Francesco Longo,Francesco Longo,F. Loparco,F. Loparco,M. N. Lovellette,P. Lubrano,P. Lubrano,Andrew Lyne,R. N. Manchester,M. Marelli,Francesco Massaro,M. Mayer,M. N. Mazziotta,Julie McEnery,Julie McEnery,Maura McLaughlin,J. Mehault,Peter F. Michelson,Roberto Mignani,Roberto Mignani,Roberto Mignani,W. Mitthumsiri,Tsunefumi Mizuno,A. A. Moiseev,A. A. Moiseev,M. E. Monzani,A. Morselli,Igor V. Moskalenko,S. Murgia,Takeshi Nakamori,Rodrigo Nemmen,E. Nuss,Masanori Ohno,T. Ohsugi,M. Orienti,E. Orlando,J. F. Ormes,David Paneque,David Paneque,J. H. Panetta,D. Parent,D. Parent,J. S. Perkins,Melissa Pesce-Rollins,M. Pierbattista,F. Piron,G. Pivato,Holger J. Pletsch,T. A. Porter,A. Possenti,S. Rainò,S. Rainò,Robert R. Rando,Robert R. Rando,Scott M. Ransom,Paul S. Ray,M. Razzano,M. Razzano,Nanda Rea,A. Reimer,Olaf Reimer,N. Renault,T. Reposeur,Steven Ritz,Roger W. Romani,M. Roth,R. Rousseau,Jayashree Roy,John J. Ruan,Alberto Sartori,P. M. Saz Parkinson,Jeffrey D. Scargle,André Schulz,Carmelo Sgrò,Ryan Shannon,E. J. Siskind,David A. Smith,Gloria Spandre,P. Spinelli,P. Spinelli,Benjamin Stappers,Andrew W. Strong,D. J. Suson,Hiromitsu Takahashi,J. G. Thayer,J. B. Thayer,Gilles Theureau,D. J. Thompson,Stephen E. Thorsett,L. Tibaldo,O. Tibolla,M. Tinivella,Diego F. Torres,Diego F. Torres,Gino Tosti,Gino Tosti,Eleonora Troja,Eleonora Troja,Yasunobu Uchiyama,T. L. Usher,Justin Vandenbroucke,V. Vasileiou,Christo Venter,Giacomo Vianello,V. Vitale,V. Vitale,Na Wang,Patrick Weltevrede,Brian L Winer,M. T. Wolff,D. L. Wood,D. L. Wood,K. S. Wood,Matthew Wood,Zhenwei Yang +257 more
TL;DR: In this article, a catalog of gamma-ray pulsar detections using three years of data acquired by the Large Area Telescope (LAT) on the Fermi satellite is presented.
Journal ArticleDOI
Neutron Star Observations: Prognosis for Equation of State Constraints
TL;DR: In this article, a theoretical analysis of neutron star structure, including general relativistic limits to mass, compactness, and spin rates, is presented. But the authors focus on the state of the interiors and the key unknowns: the typical neutron star radius and the maximum mass.
References
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