Results 101 to 110 of about 121,901 (271)

Characterizing Timing Noise in Normal Pulsars with the Nanshan Radio Telescope

open access: yesUniverse
We present a decade of observations of pulse arrival times for 85 pulsars using the Nanshan radio telescope from July 2002 to March 2014. The Cholesky method can accurately estimate the covariance function of the timing residuals, significantly improving
Jianping Yuan   +12 more
doaj   +1 more source

Meterwavelength Single Pulse Polarimetric Emission Survey. VI. Toward Understanding the Phenomenon of Pulsar Polarization in Partially Screened Vacuum Gap Model

open access: yesThe Astrophysical Journal, 2023
We have observed 123 pulsars with periods longer than 0.1 s in the Meterwavelength Single Pulse Polarimetric Emission Survey. In this work, a detailed study of the polarization behavior of these pulsars has been carried out.
Dipanjan Mitra   +2 more
doaj   +1 more source

Pulsar interpretation of the lepton spectra measured by AMS-02 [PDF]

open access: yes, 2016
AMS-02 recently published its lepton spectra measurement. The results show that the positron fraction no longer increases above $\sim$200 GeV. The aim of this work is to investigate the possibility that the excess of positron fraction is due to pulsars ...
Feng, Jie, Zhang, Hong-Hao
core   +2 more sources

A Perspective of Multi‐Reflecting TOF MS

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT Time‐of‐flight mass spectrometry (TOF MS) excels in rapid and high‐sensitivity analysis, making it a cornerstone of analytical chemistry. But as sample complexity explodes in omics studies, so does the need for higher resolving power to ensure accurate results.
A. N. Verenchikov   +3 more
wiley   +1 more source

Challenges in explaining the Galactic Center gamma-ray excess with millisecond pulsars [PDF]

open access: yes, 2014
Millisecond pulsars have been discussed as a possible source of the gamma-ray excess observed from the region surrounding the Galactic Center. With this in mind, we use the observed population of bright low-mass X-ray binaries to estimate the number of ...
I. Cholis, D. Hooper, T. Linden
semanticscholar   +1 more source

The Kinematics of Pulsars [PDF]

open access: yesSymposium - International Astronomical Union, 1985
Pulsars have a galactic radial distribution similar to that of many galactic populations such as HII regions, massive stars and supernova remnants. However they are generally much further from the plane of the Galaxy than these objects. Proper motion measurements sho that this is because they are typically moving with high velocities.
openaire   +2 more sources

Modeling the Radial Distribution of Pulsars in the Galaxy

open access: yesThe Astrophysical Journal Letters
The Parkes 20 cm multibeam pulsar surveys have discovered nearly half of the known pulsars and revealed many distant pulsars with high dispersion measures.
J. T. Xie   +4 more
doaj   +1 more source

Deriving birth timing of roe deer fawns from body measurements to limit mowing mortality

open access: yesWildlife Biology, EarlyView.
Every spring, hiding roe deer fawns Capreolus capreolus in meadows are injured or killed by mowing activities. To assess the temporal overlap between mowing activities and the fawning period, and thus help reduce the risk of mowing death, we have determined the average parturition date in three regions of Bavaria, southern Germany.
Ferdinand Paul Stehr   +3 more
wiley   +1 more source

Statistical Analysis of Pulsar Flux Density Distribution

open access: yesThe Astrophysical Journal
This study presents a comprehensive analysis of the spectral properties of 886 pulsars across a wide frequency range from 20 MHz–343.5 GHz, including a total of 86 millisecond pulsars (MSPs).
H. W. Xu   +16 more
doaj   +1 more source

The High Time Resolution Universe surveys for pulsars and fast transients

open access: yes, 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

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