Results 51 to 60 of about 109,416 (289)

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

ПЕРВЫЕ РЕЗУЛЬТАТЫ ДЕКАМЕТРОВОГО ОБЗОРА СЕВЕРНОГО НЕБА. РЕДЕТЕКТИРОВАНИЕ ИЗВЕСТНЫХ ПУЛЬСАРОВ

open access: yesOdessa Astronomical Publications, 2011
At the UTR-2 radio telescope the survey of northern sky is being conducted with aim to search for pulsars and transients. In the first stage the detection of a complete list of known pulsars with parameters DM -3, period more than 0.1 s and declination ...
В. В Захаренко   +4 more
doaj   +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

Pulsars and Magnetars [PDF]

open access: yesBrazilian Journal of Physics, 2013
The high-energy sources known as anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs) are well explained as magnetars: isolated neutron stars powered by their own magnetic energy. After explaining why it is generally believed that the traditional energy sources at work in other neutron stars (accretion, rotation, residual heat) cannot ...
openaire   +4 more sources

Orthogonal pulsars as a key test for pulsar evolution [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2020
ABSTRACT At present, there is no direct information about evolution of inclination angle χ between magnetic and rotational axes in radio pulsars. As to theoretical models of pulsar evolution, they predict both the alignment, i.e. evolution of inclination angle χ to 0°, and its counter-alignment, i.e. evolution to 90°.
M. M. Rashkovetskyi   +7 more
openaire   +3 more sources

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

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

Pulsars

open access: yesLe Journal de Physique Colloques, 1973
Pas de Résumé ...
openaire   +2 more sources

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