A two-solar-mass neutron star measured using Shapiro delay
- P. Demorest, T. Pennucci, S. Ransom, M. Roberts, J. Hessels
- PhysicsNature
- 28 October 2010
Radio timing observations of the binary millisecond pulsar J1614-2230 that show a strong Shapiro delay signature are presented and the pulsar mass is calculated to be (1.97 ± 0.04)M⊙, which rules out almost all currently proposed hyperon or boson condensate equations of state.
A Radio Pulsar/X-ray Binary Link
- A. Archibald, I. Stairs, R. Remillard
- PhysicsScience
- 20 May 2009
From X-ray Binary to Pulsar Pulsars with millisecond rotational periods are thought to originate from neutron stars in low-mass x-ray binaries that had their spin frequencies increased by…
Shapiro delay measurement of a two solar mass neutron star
- P. Demorest, T. Pennucci, S. Ransom, M. Roberts, J. Hessels
- Physics
- 27 October 2010
Neutron stars are composed of the densest form of matter known to exist in our universe, and thus provide a unique laboratory for exploring the properties of cold matter at supranuclear density.…
DISCOVERY OF THE OPTICAL COUNTERPARTS TO FOUR ENERGETIC FERMI MILLISECOND PULSARS
- R. Breton, M. V. van Kerkwijk, I. Stairs
- Physics
- 7 February 2013
In the last few years, over 43 millisecond radio pulsars have been discovered by targeted searches of unidentified γ-ray sources found by the Fermi Gamma-Ray Space Telescope. A large fraction of…
Discovery of a Transient Magnetar: XTE J1810–197
- A. Ibrahim, C. Markwardt, T. Cline
- Physics
- 23 October 2003
We report the discovery of a new X-ray pulsar, XTE J1810-197, that was serendipitously discovered on 2003 July 15 by the Rossi X- Ray Timing Explorer (RXTE) while observing the soft gamma repeater…
Chandra X-Ray Observations of G11.2–0.3: Implications for Pulsar Ages
- V. Kaspi, M. Roberts, G. Vasisht, E. Gotthelf, M. Pivovaroff, N. Kawai
- Physics
- 16 July 2001
We present Chandra X-Ray Observatory imaging observations of the young Galactic supernova remnant G11.2-0.3. The image shows that the previously known young 65 ms X-ray pulsar is at position (J2000)…
PRECISE γ-RAY TIMING AND RADIO OBSERVATIONS OF 17 FERMI γ-RAY PULSARS
- P. Ray, M. Kerr, M. Ziegler
- Physics
- 10 November 2010
We present precise phase-connected pulse timing solutions for 16 γ-ray-selected pulsars recently discovered using the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope plus one very…
A millisecond pulsar in a stellar triple system
- S. Ransom, I. Stairs, K. Stovall
- Physics, GeologyNature
- 2 January 2014
Gravitationally bound three-body systems have been studied for hundreds of years and are common in our Galaxy. They show complex orbital interactions, which can constrain the compositions, masses and…
The Pulsar Wind Nebula in G11.2–0.3
- M. Roberts, C. Tam, N. Kawai
- Physics
- 3 December 2001
We present an X-ray and radio study of the wind nebula surrounding the central pulsar PSR J1811-1925 in the supernova remnant G11.2-0.3. Using high-resolution data obtained with the Chandra X-Ray…
A Major Soft Gamma Repeater-like Outburst and Rotation Glitch in the No-longer-so-anomalous X-Ray Pulsar 1E 2259+586
- V. Kaspi, F. Gavriil, P. Woods, J. Jensen, M. Roberts, D. Chakrabarty
- Physics
- 10 April 2003
We report a major outburst from the anomalous X-ray pulsar 1E 2259+586, in which over 80 X-ray bursts were detected in 4 hr using the Rossi X-Ray Timing Explorer. The bursts range in duration from 2…
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