Results 41 to 50 of about 64,388 (220)

A Search for Pulsars around Sgr A* in the First Event Horizon Telescope Data Set

open access: yesThe Astrophysical Journal, 2023
In 2017 the Event Horizon Telescope (EHT) observed the supermassive black hole at the center of the Milky Way, Sagittarius A* (Sgr A*), at a frequency of 228.1 GHz ( λ = 1.3 mm).
Pablo Torne   +284 more
doaj   +1 more source

Using HAWC to discover invisible pulsars [PDF]

open access: yes, 2017
Observations by HAWC and Milagro have detected bright and spatially extended TeV $\ensuremath{\gamma}$-ray sources surrounding the Geminga and Monogem pulsars.
T. Linden   +7 more
semanticscholar   +1 more source

A Preliminary Study of Large Scale Pulsar Candidate Sifting Based on Parallel Hybrid Clustering

open access: yesUniverse, 2022
Pulsar candidate sifting is an essential part of pulsar analysis pipelines for discovering new pulsars. To solve the problem of data mining of a large number of pulsar data using a Five-hundred-meter Aperture Spherical radio Telescope (FAST), a parallel ...
Zhi Ma   +8 more
doaj   +1 more source

TWO LONG-TERM INTERMITTENT PULSARS DISCOVERED IN THE PALFA SURVEY [PDF]

open access: yes, 2016
We report the discovery of two long-term intermittent radio pulsars in the ongoing Pulsar Arecibo L-Band Feed Array survey. Following discovery with the Arecibo Telescope, extended observations of these pulsars over several years at Jodrell Bank ...
A. Lyne   +36 more
semanticscholar   +1 more source

The GMRT High Resolution Southern Sky Survey for Pulsars and Transients. IV. Discovery of Four New Pulsars with an FFA Search

open access: yesThe Astrophysical Journal, 2023
The fast Fourier transform (FFT) based periodicity search methods provide an efficient way to search for millisecond and binary pulsars but encounter significant sensitivity degradation while searching for long period and short duty cycle pulsars.
S. Singh   +5 more
doaj   +1 more source

THE EINSTEIN@HOME GAMMA-RAY PULSAR SURVEY. I. SEARCH METHODS, SENSITIVITY, AND DISCOVERY OF NEW YOUNG GAMMA-RAY PULSARS [PDF]

open access: yes, 2016
We report on the results of a recent blind search survey for gamma-ray pulsars in Fermi Large Area Telescope (LAT) data being carried out on the distributed volunteer computing system, Einstein@Home.
C. Clark   +28 more
semanticscholar   +1 more source

Gamma-ray emission from millisecond pulsars - an Outergap perspective [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2013
In this review paper we explain the following gamma-ray emission features from the millisecond pulsars. (1) Why is the dipolar field of millisecond pulsars so weak but the magnetic pair creation process may still be able to control the size of the ...
Kwong Sang Cheng
doaj   +1 more source

Pulsars as probes of gravity and fundamental physics [PDF]

open access: yes, 2016
Radio-loud neutron stars known as pulsars allow a wide range of experimental tests for fundamental physics, ranging from the study of super-dense matter to tests of general relativity and its alternatives.
M. Kramer
semanticscholar   +1 more source

Discovery of 15 New Pulsars at High Galactic Latitudes with FAST

open access: yesThe Astrophysical Journal
We present the discovery and timing results for 15 pulsars discovered in a high-Galactic-latitude survey conducted with the Five-hundred-meter Aperture Spherical Telescope.
Xin Xu   +11 more
doaj   +1 more source

Polarimetric Evidence of the First White Dwarf Pulsar: The Binary System AR Scorpii

open access: yesGalaxies, 2018
The binary star AR Scorpii was recently discovered to exhibit high amplitude coherent variability across the electromagnetic spectrum (ultraviolet to radio) at two closely spaced ∼2 min periods, attributed to the spin period of a white dwarf and the beat
David A.H. Buckley   +4 more
doaj   +1 more source

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