Results 81 to 90 of about 111,592 (291)

Millisecond pulsars, TeV halos, and implications for the Galactic Center gamma-ray excess [PDF]

Physical Review D, 2018
Observations by HAWC indicate that many young pulsars (including Geminga and Monogem) are surrounded by spatially extended, multi-TeV emitting regions.
D. Hooper, T. Linden
semanticscholar   +1 more source

Whistler Chorus Amplification in the Magnetosphere: The Nonlinear Free‐Electron Laser Model and the Ginzburg‐Landau Equation

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

Observations of Low-frequency Radio Emission from Millisecond Pulsars and Multipath Propagation in the Interstellar Medium [PDF]

Astrophysical Journal Supplement Series, 2018
Studying the gravitational-wave sky with pulsar timing arrays (PTAs) is a key science goal for the Square Kilometre Array (SKA) and its pathfinder telescopes.
N. Bhat, S. Tremblay, F. Kirsten, B. W. Meyers, B. W. Meyers, M. Sokolowski, W. Straten, S. McSweeney, S. Ord, R. Shannon, A. Beardsley, B. Crosse, D. Emrich, T. Franzen, L. Horsley, M. Johnston-Hollitt, D. Kaplan, D. Kenney, M. Morales, D. Pallot, K. Steele, S. Tingay, C. Trott, M. Walker, R. Wayth, A. Williams, Chen Wu   +26 more
semanticscholar   +1 more source

Fermi pulsar revolution [PDF]

, 2010
2009 has been an extraordinary year for gamma-ray pulsar astronomy and 2010 promises to be equally good. Not only have we registered an extraordinary increase in the number of pulsars detected in gamma rays, but we have also witnessed the birth of new ...
Caraveo, Patrizia A.
core  

The Spin Distribution of Millisecond X-ray Pulsars

, 2008
The spin frequency distribution of accreting millisecond X-ray pulsars cuts off sharply above 730 Hz, well below the breakup spin rate for most neutron star equations of state. I review several different ideas for explaining this cutoff.
Alessandro Patruno, D. Chakrabarty, Diego Altamirano, Manuel Linares, Nanda Rea, Nathalie Degenaar, Paolo Soleri, Piergiorgio Casella, Rudy Wijnands   +8 more
core   +1 more source

High‐Yield Bioproduction of Extracellular Vesicles from Stem Cell Spheroids via Millifluidic Vortex Transport

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, Laura Charnay, Noa Burshtein, Jean‐Michel Guigner, Léonie Dec, Damarys Loew, Amanda K.A. Silva, Anke Lindner, Claire Wilhelm   +8 more
wiley   +1 more source

Discovery of Four Pulsars in a Pilot Survey at Intermediate Galactic Latitudes with FAST

The Astrophysical Journal, 2023
We present the discovery and timing results of four pulsars discovered in a pilot survey at intermediate Galactic latitudes with the Five-hundred Aperture Spherical Telescope (FAST). Among these pulsars, two belong to the category of millisecond pulsars (
Q. J. Zhi, J. T. Bai, S. Dai, X. Xu, S. J. Dang, L. H. Shang, R. S. Zhao, D. Li, W. W. Zhu, N. Wang, J. P. Yuan, P. Wang, L. Zhang, Y. Feng, J. B. Wang, S. Q. Wang, Q. D. Wu, A. J. Dong, H. Yang, J. Tian, W. Q. Zhong, X. H. Luo, Miroslav D. Filipović, G. J. Qiao   +23 more
doaj   +1 more source

Searching for pulsed emission from XTE J0929-314 at high radio frequencies

, 2009
The aim of this work is to search for radio signals in the quiescent phase of accreting millisecond X-ray pulsars, in this way giving an ultimate proof of the recycling model, thereby unambiguously establishing that accreting millisecond X-ray pulsars ...
A. Possenti, Alpar, Altamirano, Bhattacharya, Brown, Burderi, Burderi, Burgay, Campana, Casella, Colpi, Cordes, D'Amico, D'Avanzo, Di Salvo, Di Salvo, Eggleton, Emmering, Galloway, Kramer, Krimm, L. Burderi, M. Burgay, M. N. Iacolina, Manchester, Monelli, Rappaport, Rutledge, Shakura, T. Di Salvo, Taylor, Wijnands   +31 more
core   +1 more source

Motion of the hot spot and spin torque in accreting millisecond pulsars [PDF]

, 2008
The primary concern of this contribution is that accreting millisecond pulsars (AMXPs) show a much larger amount of information than is commonly believed. The three questions to be addressed are: 1. Is the apparent spin torque observed in AMXPs real ? 2.
A. Patruno, Alessandro Patruno, Diego Altamirano, Manuel Linares, Nanda Rea, Nathalie Degenaar, Paolo Soleri, Piergiorgio Casella, Rudy Wijnands   +8 more
core   +2 more sources

XMM‐Newton Observations of the Peculiar Be X‐Ray Binary A0538‐66

Astronomische Nachrichten, Volume 346, Issue 1, January 2025.
ABSTRACT A0538‐66 is a neutron star/Be x‐ray binary located in the Large Magellanic Cloud and, since its discovery in the 70s, it showed a peculiar behavior that makes it a unique object in the high‐mass x‐ray binaries scene: the extremely eccentric orbit (e=0.72$$ e=0.72 $$), the short spin period of the neutron star (P=69$$ P=69 $$ ms), the episodes ...
Michela Rigoselli, Caterina Tresoldi, Lorenzo Ducci, Sandro Mereghetti   +3 more
wiley   +1 more source