Results 21 to 30 of about 139,218 (319)

Discovery and Timing Analysis of New Pulsars in Globular Cluster NGC 5024: New Observations from FAST

open access: yesThe Astrophysical Journal Letters, 2023
The most distant globular cluster (GC) with known pulsars is NGC 5024 (M53). In this paper, we report the discovery of a new binary millisecond pulsar, PSR J1312+1810E (M53E), and present the new timing solutions for M53B–E based on 22 observations from ...
Yujie Lian   +5 more
doaj   +1 more source

A LOFAR census of millisecond pulsars [PDF]

open access: yesAstronomy & Astrophysics, 2016
27 pages, 10 figures, 5 tables, accepted to A& ...
Patrick Weltevrede   +44 more
openaire   +11 more sources

Effect of Clustered Nursing Care on Sleep Behaviors of the Preterm Neonates Admitted to the Neonatal Intensive Care Unit [PDF]

open access: yesIranian Journal of Neonatology, 2019
Background: Premature neonates admitted to the neonatal intensive care unit (NICU) undergo sleep disorder due to various manipulations. The present study aimed to investigate the effect of clustered nursing care on sleep behaviors in premature neonates ...
Marjan Bazregari   +3 more
doaj   +1 more source

Pulse Profiles of Millisecond Pulsars [PDF]

open access: greenInternational Astronomical Union Colloquium, 1996
We present a comparison between the average radio pulse profiles of millisecond pulsars (MSPs) in the field and in globular clusters. Our sample consists of 20 field MSPs and 25 cluster MSPs for which observations exist at 400 - 600 MHz.We find that 6 of the 20 field MSPs, or about 30%, have a comparable interpulse at a phase offset of 180 ±30 degrees.
Ray Jayawardhana, J. E. Grindlay
openalex   +4 more sources

Transitional Millisecond Pulsars

open access: yes, 2021
Millisecond pulsars in tight binaries have recently opened new challenges in our understanding of physical processes governing the evolution of binaries and the interaction between astrophysical plasma and electromagnetic fields. Transitional systems that showed changes from rotation-powered to accretion powered states and vice versa have bridged the ...
PAPITTO, ALESSANDRO   +1 more
openaire   +3 more sources

Defining Millisecond Pulsars

open access: yesResearch Notes of the AAS, 2023
Abstract Millisecond pulsars (MSP) are an important subclass of rotation powered pulsars (RPP), traditionally defined as those with P s  < 20–30 ms and B s  ≲ 1010 G.
Priyam Halder   +4 more
openaire   +2 more sources

Study on the Expansion Kinetics of Plasma and Absorption Wave Induced by Millisecond-Nanosecond Combined Pulse Lasers in Fused Quartz

open access: yesPhotonics, 2023
The transient temperature field, the velocity and pressure of plasma, and the absorption wave of fused quartz induced by millisecond-nanosecond combined pulse lasers are simulated.
Congrui Geng   +6 more
doaj   +1 more source

Binary and Millisecond Pulsars [PDF]

open access: yesAnnual Review of Astronomy and Astrophysics, 1994
Most of the ~600 known pulsars are single and located in the disk of our Galaxy. There is circumstantial evidence that the pulsars in this majority are created in supernova (SN) explosions, by the collapse of the cores of massive stars (initial mass M_i ≳ M_(cr) ≃ 8 M_⊙). One is created roughly every 100 y in the Galaxy.
Phinney, E. S., Kulkarni, S. R.
openaire   +3 more sources

Description and Application of the Surfing Effect

open access: yesUniverse, 2022
The standard technique for very low-frequency gravitational wave detection is mainly based on searching for a specific spatial correlation in the variation of the times of arrival of the radio pulses emitted by millisecond pulsars with respect to a ...
Michele Maiorano   +2 more
doaj   +1 more source

Spin frequency distributions of binary millisecond pulsars [PDF]

open access: yes, 2014
Rotation-powered millisecond radio pulsars have been spun up to their present spin period by a $10^8$ - $10^9$ yr long X-ray-bright phase of accretion of matter and angular momentum in a low-to-intermediate mass binary system.
Papitto, A.   +3 more
core   +2 more sources

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