Results 81 to 90 of about 15,813 (253)

Can eccentric binary millisecond pulsars form by accretion induced collapse of white dwarfs?

, 2010
Binary radio pulsars are generally believed to have been spun up to millisecond periods (i.e. recycling) via mass accretion from their donor stars, and they are the descendants of neutron star low-mass X-ray binaries.
Alpar, Bailyn, Belczynski, Bhattacharya, Bhattacharya, Burrows, Canal, Champion, Cote, Cumming, Dai, Davies, Dessart, Du, Ferrario, Freire Paulo, Harrison, Hobbs, Hurley, Hurley, Hurley, Illarinov, Isern, Ivanova, Kitaura, Kluźniak, Kroupa, Kulkarni, Lai, Lai, Liu, Liu, Lorimer, Lorimer, Manchester, Michel, Nomoto, Pfahl, Podsiadlowski, Qian, Ren-Xin Xu, Ruderman, Ruderman, Scheck, Stairs, Taam, Tauris, Tutukov, Van Paradijs, Wang, Wang, Wen-Cong Chen, Xi-Wei Liu, Xiang-Dong Li, Xu, Xu   +55 more
core   +1 more source

Polarimetry of millisecond pulsars

The Astrophysical Journal, 1990
The mean polarization profiles of several fast pulsars were measured. Observations of pulsar PSR 1937 + 21 are similar to previously published results, except that a shallower position angle was found to swing across the pulse at low frequency; for the first time, the occurrence of orthogonal mode switching at all frequencies is explicitly demonstrated.
Stephen E. Thorsett, Daniel R. Stinebring   +1 more
openaire   +2 more sources

Evidence for a Minimum Ellipticity in Millisecond Pulsars [PDF]

The Astrophysical Journal Letters, 2018
Abstract Neutron stars spin down over time due to a number of energy-loss processes. We provide tantalizing population-based evidence that millisecond pulsars (MSPs) have a minimum ellipticity of ϵ ≈ 10−9 around their spin axis and that, consequently, some spin down mostly through gravitational-wave emission.
G. Woan, M. D. Pitkin, B. Haskell, D. I. Jones, P. D. Lasky   +4 more
openaire   +5 more sources

Unveiling Low-frequency Eclipses in Spider Millisecond Pulsars Using Wideband GMRT Observations

The Astrophysical Journal
Eclipses of radio emission have been reported for ∼58 spider millisecond pulsars (MSPs), of which only around 19% have been extensively studied. Such studies at low frequencies are crucial for probing the properties of the eclipse medium.
Sangita Kumari, Bhaswati Bhattacharyya, Devojyoti Kansabanik, Rahul Sharan, Ankita Ghosh, Jayanta Roy   +5 more
doaj   +1 more source

Improving Distances to Binary Millisecond Pulsars with Gaia

The Astrophysical Journal, 2023
Pulsar distances are notoriously difficult to measure, and play an important role in many fundamental physics experiments, such as pulsar timing arrays.
Abigail Moran, Chiara M. F. Mingarelli, Megan Bedell, Deborah Good, David N. Spergel   +4 more
doaj   +1 more source

Millisecond Pulsar Surveys [PDF]

International Astronomical Union Colloquium, 1996
AbstractThere are now more than 30 millisecond pulsars known to be associated with the Galactic disk. The majority of these have been discovered in just the last few years as the result of large-scale all-sky surveys. The properties of the population vary tremendously.
openaire   +2 more sources

Frequency-dependent Emission of the Millisecond Pulsar B1937+21 with the Parkes Ultrawideband Receiver

The Astrophysical Journal
In this study, we report on the broadband polarization behavior of the millisecond pulsar B1937+21 (J1939+2134), using high-quality observations made with the ultrawideband low receiver on Murriyang, the Parkes radio telescope.
Z. Wang, Z. G. Wen, J. P. Yuan, N. Wang, W. Han, H. G. Wang, J. L. Chen, Z. Wang   +7 more
doaj   +1 more source

Discovery and Timing of Millisecond Pulsars with the Arecibo 327 MHz Drift-scan Survey

The Astrophysical Journal, 2023
We present the discovery and timing solutions of four millisecond pulsars (MSPs) discovered in the Arecibo 327 MHz Drift-Scan Pulsar Survey. Three of these pulsars are in binary systems, consisting of a redback (PSR J2055+1545), a black widow (PSR J1630 ...
Evan F. Lewis, Timothy E. E. Olszanski, Julia S. Deneva, Paulo C. C. Freire, Maura A. McLaughlin, Kevin Stovall, Manjari Bagchi, Jose G. Martinez, Benetge B. P. Perera   +8 more
doaj   +1 more source

The High Time Resolution Universe surveys for pulsars and fast transients

, 2012
The High Time Resolution Universe survey for pulsars and transients is the first truly all-sky pulsar survey, taking place at the Parkes Radio Telescope in Australia and the Effelsberg Radio Telescope in Germany. Utilising multibeam receivers with custom
Keith, Michael J.
core   +1 more source

THE FORMATION OF THE ECCENTRIC-ORBIT MILLISECOND PULSAR J1903+0327 AND THE ORIGIN OF SINGLE MILLISECOND PULSARS [PDF]

The Astrophysical Journal, 2011
The millisecond pulsar J1903+0327 is accompanied by an ordinary G-dwarf star in an unusually wide ($P_{\rm orb} \simeq 95.2$\,days) and eccentric ($e \simeq 0.44$) orbit. The standard model for producing MSPs fails to explain the orbital characteristics of this extraordinary binary, and alternative binary models are unable to explain the observables ...
Portegies Zwart, S., van den Heuvel, E.P.J., van Leeuwen, J., Nelemans, G.   +3 more
openaire   +7 more sources