Results 81 to 90 of about 17,664 (256)

Timing Analysis of the 2022 Outburst of the Accreting Millisecond X-Ray Pulsar SAX J1808.4-3658: Hints of an Orbital Shrinking

The Astrophysical Journal Letters, 2023
We present a pulse timing analysis of NICER observations of the accreting millisecond X-ray pulsar SAX J1808.4−3658 during the outburst that started on 2022 August 19.
Giulia Illiano, Alessandro Papitto, Andrea Sanna, Peter Bult, Filippo Ambrosino, Arianna Miraval Zanon, Francesco Coti Zelati, Luigi Stella, Diego Altamirano, Maria Cristina Baglio, Enrico Bozzo, Luciano Burderi, Domitilla de Martino, Alessandro Di Marco, Tiziana di Salvo, Carlo Ferrigno, Vladislav Loktev, Alessio Marino, Mason Ng, Maura Pilia, Juri Poutanen, Tuomo Salmi   +21 more
doaj   +1 more source

PSR J1909-3744, a Binary Millisecond Pulsar with a Very Small Duty Cycle

, 2003
We report the discovery of PSR J1909-3744, a 2.95 millisecond pulsar in a nearly circular 1.53 day orbit. Its narrow pulse width of 43 microseconds allows pulse arrival times to be determined with great accuracy.
A. Hotan, B. A. Jacoby, Driebe T., M. Bailes, M. H. van Kerkwijk, S. B. Anderson, S. Ord, S. R. Kulkarni, Shklovskii I. S.   +8 more
core   +2 more sources

The Mass of a Millisecond Pulsar [PDF]

The Astrophysical Journal, 2005
Abstract not available.
Jacoby, Bryan A., Hotan, A. W., Bailes, M., Ord, S. M., Kulkarni, S. R.   +4 more
openaire   +3 more sources

A VLITE Search for Millisecond Pulsars in Globular Clusters: Discovery of a Pulsar in GLIMPSE-C01

The Astrophysical Journal
We present results from a search for pulsars in globular clusters, including the discovery of a new millisecond pulsar in the stellar cluster GLIMPSE-C01.
Amaris V. McCarver, Thomas J. Maccarone, Scott M. Ransom, Tracy E. Clarke, Simona Giacintucci, Wendy M. Peters, Emil Polisensky, Kristina Nyland, Tasha Gautam, Paulo C. C. Freire, Blagoy Rangelov   +10 more
doaj   +1 more source

Pulsed Gamma-Ray Emission of PSR J0447+2447

The Astrophysical Journal
PSR J0447+2447 is an isolated millisecond pulsar with a period of ∼2.9953 ms discovered by the Five-hundred-meter Aperture Spherical radio Telescope (FAST).
Liancheng Zhou, Li Zhang, Jun Fang, Z. L. Yang, Yi Yan, J. L. Han   +5 more
doaj   +1 more source

The NANOGrav 12.5 yr Data Set: Polarimetry and Faraday Rotation Measures from Observations of Millisecond Pulsars with the Green Bank Telescope

The Astrophysical Journal, 2022
In this work, we present polarization profiles for 23 millisecond pulsars observed at 820 and 1500 MHz with the Green Bank Telescope as part of the NANOGrav pulsar timing array.
H. M. Wahl, M. A. McLaughlin, P. A. Gentile, M. L. Jones, R. Spiewak, Z. Arzoumanian, K. Crowter, P. B. Demorest, M. E. DeCesar, T. Dolch, J. A. Ellis, R. D. Ferdman, E. C. Ferrara, E. Fonseca, N. Garver-Daniels, G. Jones, M. T. Lam, L. Levin, N. Lewandowska, D. R. Lorimer, R. S. Lynch, D. R. Madison, C. Ng, D. J. Nice, T. T. Pennucci, S. M. Ransom, P. Ray, I. H. Stairs, K. Stovall, J. K. Swiggum, W. W. Zhu   +30 more
doaj   +1 more source

H I Absorption Line and Anomalous Dispersion in the Radio Pulses of PSR B1937+21

The Astrophysical Journal
We use the Five-hundred-meter Aperture Spherical radio Telescope to observe the bright millisecond pulsar PSR B1937+21 (J1939+2134) and record the data in the band from 1.0 to 1.5 GHz.
Jinchen Jiang, Shunshun Cao, Kejia Lee, Bojun Wang, Heng Xu, Siyuan Chen, Yanjun Guo, Peng Jiang, Weicong Jing, Jiguang Lu, Jiangwei Xu, Renxin Xu, Zihan Xue   +12 more
doaj   +1 more source

COSMIC-RAY POSITRONS FROM MILLISECOND PULSARS [PDF]

The Astrophysical Journal, 2015
Observations by the Fermi Large Area Telescope of gamma-ray millisecond pulsar light curves imply copious pair production in their magnetospheres, and not exclusively in those of younger pulsars. Such pair cascades may be a primary source of Galactic electrons and positrons, contributing to the observed enhancement in positron flux above ~10 GeV. Fermi
C. Venter, A. Kopp, A. K. Harding, P. L. Gonthier, I. Büsching   +4 more
openaire   +4 more sources

Decade-long Timing of Four GMRT Discovered Millisecond Pulsars

The Astrophysical Journal
The discovery and timing follow up of millisecond pulsars (MSPs) are necessary not just for their usefulness in pulsar timing arrays (PTAs) but also for investigating their own intriguing properties.
Shyam S. Sharma, Jayanta Roy, Bhaswati Bhattacharyya, Lina Levin   +3 more
doaj   +1 more source

The second millisecond pulsar [PDF]

Nature, 1983
On the principle that no celestial object is unique, the discovery of another millisecond pulsar is overdue. That reported on page 417 has an unexpected interest.
openaire   +1 more source