Results 51 to 60 of about 17,664 (256)
Probing the millisecond pulsar origin of the γ-ray excess in the Galactic centre with LISA
Astronomy & AstrophysicsThe gigaelectronvolt γ-ray excess observed towards the Galactic centre remains unexplained. While dark matter annihilation has long been considered a leading explanation, an alternative scenario involving a large population of millisecond pulsars remains
Korol Valeriya, Igoshev Andrei
doaj +1 more source
On the Transition from Accretion Powered to Rotation Powered Millisecond Pulsars [PDF]
, 2010 The heating associated with the deposition of $\gamma$-rays in an accretion disk is proposed as a mechanism to facilitate the transformation of a low mass X-ray binary to the radio millisecond pulsar phase. The $\gamma$-ray emission produced in the outer
Archibald +14 more
core +2 more sources
Green Bank Telescope Discovery of the Redback Binary Millisecond Pulsar PSR J0212+5321
The Astrophysical Journal, 2023 We report the discovery of a 2.11 ms binary millisecond pulsar during a targeted search of the redback optical candidate coincident with the γ -ray source 3FGL J0212.5+5320 using the Robert C.
Karen I. Perez +3 more
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Optical Identification of the Shortest-period Spider Pulsar System M71E
The Astrophysical Journal, 2023 M71E is a spider pulsar (i.e., a millisecond pulsar with a tight binary companion) with the shortest known orbital period of P = 53.3 minutes, which was discovered by Pan et al.
Zhuokai Liu, Subo Dong
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A compact steep spectrum radio source in NGC1977 [PDF]
, 2012 A compact steep spectrum radio source (J0535-0452) is located in the sky coincident with a bright optical rim in the HII region NGC1977. J0535-0452 is observed to be $\leq 100$ mas in angular size at 8.44 GHz.
Ransom, Scott M., Roshi, D. Anish
core +1 more source
Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.Abstract We present a novel nonlinear model for whistler‐mode chorus amplification based on the free‐electron laser (FEL) mechanism. First, we derive the nonlinear collective variable equations for the whistler‐electron interaction. Consistent with in situ satellite observations, these equations predict that a small seed wave can undergo exponential ...
Brandon Bonham, Amitava Bhattacharjee
wiley +1 more source
Optical and Infrared Lightcurve Modeling of the Gamma-ray Millisecond Pulsar 2FGL J2339.6-0532 [PDF]
Journal of Astronomy and Space Sciences, 2013 We report the detection of a quasi-sinusoidally modulated optical flux with a period of 4.6343 hour in the optical and infrared band of the Fermi source 2FGL J2339.7-0531.
Tzu-Ching Yen +5 more
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SciPost Physics Proceedings, 2023 After more than a decade since its discovery, the Galactic center gamma-ray excess - discovered with the Fermi Large Area Telescope - remains puzzling. While the spectrum of the signal can be explained by either dark matter or an unresolved population of
Oscar Macias, Martin Pohl, Chris Gordon, Phaedra Coleman
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The Bologna submillisecond pulsar survey [PDF]
, 1999 Since the discovery of the original millisecond pulsar, no pulsars with a shorter spin period ...
D'Amico, N.
core +2 more sources
Advanced Materials, Volume 37, Issue 20, May 19, 2025.Stem cell spheroids, produced via a high‐throughput microfabrication technique, are transported within a vortex generated at the outlet channels of a cross‐slot millifluidic chip. For Reynolds number exceeding 170–200, intermittent high shear stresses applied to each spheroid within the vortex trigger a massive release of biologically active ...
Elliot Thouvenot +8 more
wiley +1 more source