Results 41 to 50 of about 3,309 (210)

Probing the composition of sub-millisecond rotating compact stars by r-modes instability

, 2012
We investigate the implications of the r-modes instability on the composition of a compact star rotating at a sub-millisecond period. In particular, the only viable astrophysical scenario for such an object, wich might present inside the Low Mass X-ray ...
Giuseppe Pagliara, Drago, Alessandro, Alessandro Drago, Pagliara, Giuseppe   +3 more
core   +1 more source

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

TeV astronomy of millisecond pulsars [PDF]

, 1991
This thesis is concerned with the detection of pulsed TeV γ-rays from millisecond pulsars. These stars appear to include some very efficient producers of high energy particles, but the mechanisms by which they produce TeV γ-rays are still a matter of ...
Brazler, Karen Tracy Susan
core  

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

A time-variable, phase-dependent emission line in the X-ray spectrum of the isolated neutron star RXJ0822–4300 [PDF]

, 2012
RX J0822−4300 is the central compact object associated with the Puppis A supernova remnant. Previous X-ray observations suggested RX J0822−4300 to be a young neutron star with a weak dipole field and a peculiar surface temperature distribution dominated ...
Mereghetti, S, P. A. Caraveo, TUROLLA, ROBERTO, Salvetti, D, Mignani, RP, Zane, S, S. Zane, Turolla, R, Esposito, P, Caraveo, PA, R. Turolla, A. Sartori, Tiengo, A, De Luca, A, Sartori, A, Pizzolato, F, F. Pizzolato, D. Salvetti, P. Esposito, A. De Luca, Caraveo, P, S. Mereghetti, R. P. Mignani, A. Tiengo, G. F. Bignami, Bignami, GF   +25 more
core   +1 more source

Exploring Precision Timing of Millisecond Pulsars with Wide-Bandwidth Observations

, 2023
This thesis studies the masses, velocities, and interstellar medium effects of rapidly spinning neutron stars called millisecond pulsars. The masses of seven pulsars and their binary companions are measured.
Mohsen Shamohammadi (19120954)
core   +1 more source

Timing of Millisecond Pulsars [PDF]

Symposium - International Astronomical Union, 1996
Arrival times of some millisecond pulsars can be measured with sub-microsecond precision. This allows unprecedented measurements of the rotation of these stars, astrometric parameters including proper motion and parallax, motion in binary and complex dynamical systems, perturbations resulting from propagation through small scale turbulence in the ...
openaire   +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

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

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