Results 31 to 40 of about 31,208 (216)
Variable Magellanic HMXB Sources versus Variable ULX Sources: Nothing to Brag about the ULX Sources
Galaxies, 2020 We carry out a meta-analysis of ultraluminous X-ray (ULX) sources that show large variabilities (by factors of >10) between their highest and lowest emission states in the X-ray energy range of 0.3–10 keV.
Dimitris M. Christodoulou +5 more
doaj +1 more source
Predicting Pulsars from Imbalanced Dataset with Hybrid Resampling Approach
Advances in Astronomy, 2021 Pulsar stars, usually neutron stars, are spherical and compact objects containing a large quantity of mass. Each pulsar star possesses a magnetic field and emits a slightly different pattern of electromagnetic radiation which is used to identify the ...
Ernesto Lee +5 more
doaj +1 more source
Spin Equilibrium of Rapidly Spinning Neutron Stars via Transient Accretion
Galaxies, 2023 The concept of spin equilibrium due to an interaction between the stellar magnetosphere and a thin, Keplerian accretion disk, and a well-known formula of the corresponding equilibrium spin frequency, provide a key understanding of spin evolution and the ...
Sudip Bhattacharyya
doaj +1 more source
Pulsar Electrodynamics — Pulsars and Puzzlers — [PDF]
International Astronomical Union Colloquium, 1996 Abstract A gedanken experiment presented here provides basic understanding of how the pulsar magnetosphere operates. We discuss current issues about the electric-field acceleration along magnetic field lines and subsequent pair creation, and also about the pulsar wind problem.
openaire +2 more sources
The specifics of pulsar radio emission
Open Astronomy, 2022 A characteristic property of pulsars is pulsed periodic radio emission, which has a high stability of periods. Despite the high stability of the emission periods of pulsars, monitoring the time of arrival of pulses (timing) shows the presence of ...
Losovsky Boris Ya.
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Quark Deconfinement in Rotating Neutron Stars
Universe, 2017 In this paper, we use a three flavor non-local Nambu–Jona-Lasinio (NJL) model, an improved effective model of Quantum Chromodynamics (QCD) at low energies, to investigate the existence of deconfined quarks in the cores of neutron stars.
Richard D. Mellinger +4 more
doaj +1 more source
Advanced Science, EarlyView.Molecular and functional landscape of BD progression and severity based on in‐depth proteomics. Tree boosting machine learning models with favorable performance in BD diagnosis and stratification. Efficient biomarker panels for BD diagnosis and stratification. .
Linlin Cheng +6 more
wiley +1 more source
Glitches in Southern Pulsars [PDF]
International Astronomical Union Colloquium, 2000 Abstract Parkes timing observations of 31 mostly young pulsars over nearly nine years are described. A total of 29 glitches were detected, of which 19 are previously unreported. Twelve glitches were seen in PSR J1341–6220, making this the most frequently glitching pulsar known, and the largest known glitch was detected in PSR J1614–5047 ...
R. Pace +8 more
openaire +8 more sources
Decoding the Nature of Coherent Radio Emission in Pulsars I: Observational Constraints
UniverseRadio observations from normal pulsars indicate that the coherent radio emission is excited by curvature radiation from charge bunches. In this review, we provide a systematic description of the various observational constraints on the radio emission ...
Dipanjan Mitra +2 more
doaj +1 more source