Results 81 to 90 of about 16,963 (231)

Broadband X-Ray Timing and Spectral Characteristics of the Accretion-powered Millisecond X-Ray Pulsar MAXIJ1816-195

open access: yesThe Astrophysical Journal, 2023
We studied the broadband X-ray timing and spectral behaviors of the newly confirmed accreting millisecond X-ray pulsar MAXI J1816−195 during its 2022 outburst.
Zhaosheng Li   +13 more
doaj   +1 more source

COSMIC-RAY POSITRONS FROM MILLISECOND PULSARS [PDF]

open access: yesThe 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   +4 more
openaire   +4 more sources

Observations of Nine Millisecond Pulsars at 8600 MHz Using the TMRT

open access: yesThe Astrophysical Journal
We report detection results of nine millisecond pulsars (MSPs) at 8600 MHz using simultaneous 2250 and 8600 MHz observations conducted with the Shanghai Tian Ma Radio Telescope.
Xiao-Wei Wang   +9 more
doaj   +1 more source

The second millisecond pulsar [PDF]

open access: yesNature, 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

Multiwavelength Evidence for Two New Candidate Transitional Millisecond Pulsars in the Subluminous Disk State: 4FGL J0639.1-8009 and 4FGL J1824.2+1231

open access: yesThe Astrophysical Journal
We report the discovery of two new Galactic accreting compact objects consistent with the respective positions of the unassociated Fermi-LAT γ -ray sources 4FGL J0639.1-8009 and 4FGL J1824.2+1231. A combination of new and archival X-ray data from Chandra,
Rebecca Kyer   +6 more
doaj   +1 more source

Investigating Unassociated Fermi-LAT sources for the search of Gamma ray pulsars including Millisecond pulsars using semicoherent approch [PDF]

open access: yesEPJ Web of Conferences
The search for gamma-ray pulsars including millisecond pulsars (MSPs) among unassociated Fermi-Large Area Telescope (LAT) sources offers an opportunity to study these rapidly rotating, highly magnetized neutron stars.
Hrishikesh Chandana A.   +5 more
doaj   +1 more source

Timing of Millisecond Pulsars [PDF]

open access: yesSymposium - International Astronomical Union, 1996
Arrival times of some millisecond pulsars can be measured with sub-microsecond precision. This allows unprecedented measurements of the rotation of these stars, astrometric parameters including proper motion and parallax, motion in binary and complex dynamical systems, perturbations resulting from propagation through small scale turbulence in the ...
openaire   +1 more source

Timing of Millisecond Pulsars in NGC 6752. III. On the Presence of Nonluminous Matter in the Cluster’s Core

open access: yesThe Astrophysical Journal
Millisecond pulsars are subject to accelerations in globular clusters (GCs) that manifest themselves in both the first and second spin period time derivatives, and can be used to explore the mass distribution of the potentials they inhabit.
A. Corongiu   +11 more
doaj   +1 more source

'Hidden' millisecond pulsars

open access: yesThe Astrophysical Journal, 1991
The radiative and hydrodynamical processes occurring near the region where the pulsar wind interacts with the material outflowing from the illuminated companion star atmosphere are addressed. The emphasis is placed on the properties of a class of 'hidden' millisecond pulsars.
openaire   +1 more source

Polarimetry of millisecond pulsars

open access: yesThe 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   +1 more
openaire   +1 more source

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