Results 31 to 40 of about 16,242 (188)

The GMRT High Resolution Southern Sky Survey for Pulsars and Transients. V. Localization of Two Millisecond Pulsars

The Astrophysical Journal, 2023
The timing follow-up of newly discovered millisecond pulsars (MSPs) is hindered by the larger positional uncertainty (a few tens of arcminutes) associated with the discovery.
Shyam S. Sharma, Jayanta Roy, Sanjay Kudale, Bhaswati Bhattacharyya, Arpit K. Behera, Shubham Singh   +5 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

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

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

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

Twenty Years of Searching for (and Finding) Globular Cluster Pulsars

, 2007
Globular clusters produce orders of magnitude more millisecond pulsars per unit mass than the Galactic disk. Since the first cluster pulsar was uncovered twenty years ago, at least 138 have been identified - most of which are binary millisecond pulsars ...
A. Cumming, C. Bassa, Scott M. Ransom, V. M. Kaspi, Z. Wang   +4 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

PSR J1947−1120: A New Huntsman Millisecond Pulsar Binary

The Astrophysical Journal
We present the discovery of PSR J1947–1120, a new huntsman millisecond pulsar with a red giant companion star in a 10.3 day orbit. This pulsar was found via optical, X-ray, and radio follow-up of the previously unassociated γ -ray source 4FGL J1947.6 ...
Jay Strader, Paul S. Ray, Ryan Urquhart, Samuel J. Swihart, Laura Chomiuk, Elias Aydi, Eric C. Bellm, Kristen C. Dage, Megan E. DeCesar, Julia S. Deneva, Maura A. McLaughlin, Isabella Molina, Teresa Panurach, Kirill V. Sokolovsky   +13 more
doaj   +1 more source

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

The XinJiang Astronomical Observatory NSRT Pulsar Data Archive

Advances in Astronomy, Volume 2019, Issue 1, 2019., 2019
The sensitivity of our pulsar observation system with typical integration time of 16 minutes has reached 0.4 mJy after we have upgraded the receiver cooling system of NanShan 25‐m radio telescope (NSRT) at Xinjiang Astronomical Observatory (XAO) in 2002. About 280 pulsars were observed after the upgrade.
Hailong Zhang, Markus Demleitner, Jie Wang, Na Wang, Jun Nie, Jianping Yuan, Junhui Fan   +6 more
wiley   +1 more source