Results 111 to 120 of about 847,988 (312)

A Binary Millisecond Pulsar in Globular Cluster NGC6544 [PDF]

, 2000
We report the detection of a new 3.06 ms binary pulsar in the globular cluster NGC6544 using a Fourier-domain ``acceleration'' search. With an implied companion mass of ~0.01 solar masses and an orbital period of only P_b~1.7 hours, it displays very ...
Andrew G. Lyne, Biggs J. D., Fernando Camilo, Haslam C. G. T., James R. Herrnstein, Lawson K. D., Lincoln J. Greenhill, Richard N. Manchester, Scott M. Ransom, Standish E. M., Staveley-Smith L., Stephen S. Eikenberry   +11 more
core   +2 more sources

UNDERSTANDING THE EVOLUTION OF CLOSE BINARY SYSTEMS WITH RADIO PULSARS [PDF]

, 2014
We calculate the evolution of close binary systems (CBSs) formed by a neutron star (behaving as a radio pulsar) and a normal donor star, which evolve either to a helium white dwarf (HeWD) or to ultra-short orbital period systems.
O. Benvenuto, O. Benvenuto, M. D. Vito, J. E. Horvath   +3 more
semanticscholar   +1 more source

A Brief, Biased View of Neutron Star Cooling

Astronomische Nachrichten, Volume 346, Issue 1, January 2025.
ABSTRACT This is a concise and non‐technical review of topics related to neutron star (NS) cooling, for both young NSs and NSs in low‐mass x‐ray binaries. Neutrino emission from the NS core drives cooling rates, via different processes including Urca processes and pair breaking and formation at the neutron superfluid critical temperature.
Craig Heinke
wiley   +1 more source

OBSERVATIONS AND MODELING OF THE COMPANIONS OF SHORT PERIOD BINARY MILLISECOND PULSARS: EVIDENCE FOR HIGH-MASS NEUTRON STARS [PDF]

, 2014
We present observations of fields containing eight recently discovered binary millisecond pulsars using the telescopes at MDM Observatory. Optical counterparts to four of these systems are detected, one of which, PSR J2214+3000, is a novel detection ...
Joshua Schroeder, J. Halpern
semanticscholar   +1 more source

Spectral Studies of Super‐Eddington Accreting Neutron Stars in the Magellanic Clouds

Astronomische Nachrichten, Volume 346, Issue 1, January 2025.
ABSTRACT Major outbursts of BeXRBs offer a unique laboratory for studying accretion onto magnetized neutron stars (NSs) over a large dynamic range. The accreting material is entrained from the accretion disk by the strong magnetic field, and then channeled onto the NS, forming a so‐called accretion column (AC).
Georgios Vasilopoulos, Marios Kouzis, Brent F. West, Peter A. Becker   +3 more
wiley   +1 more source

Unveiling Low-frequency Eclipses in Spider Millisecond Pulsars Using Wideband GMRT Observations

The Astrophysical Journal
Eclipses of radio emission have been reported for ∼58 spider millisecond pulsars (MSPs), of which only around 19% have been extensively studied. Such studies at low frequencies are crucial for probing the properties of the eclipse medium.
Sangita Kumari, Bhaswati Bhattacharyya, Devojyoti Kansabanik, Rahul Sharan, Ankita Ghosh, Jayanta Roy   +5 more
doaj   +1 more source

Neutron Star Mass Measurements. I. Radio Pulsars [PDF]

Astrophys.J. 512 (1999) 288, 1998
There are now about fifty known radio pulsars in binary systems, including at least five in double neutron star binaries. In some cases, the stellar masses can be directly determined from measurements of relativistic orbital effects. In others, only an indirect or statistical estimate of the masses is possible.
arxiv   +1 more source

The Timing of Nine Globular Cluster Pulsars

, 2012
We have used the Robert C. Byrd Green Bank Telescope to time nine previously known pulsars without published timing solutions in the globular clusters M62, NGC 6544, and NGC 6624.
Biggs, Boyles, Bryan A. Jacoby, Camilo, Carretta, Chandler, Cocozza, Dessart, D’Amico, D’Amico, D’Amico, Freire, Freire, Freire, Freire, Haslam, Jacoby, King, Lyne, Nice, Paulo C. C. Freire, Pfahl, Phinney, Possenti, Ransom, Ransom, Ryan S. Lynch, Scott M. Ransom, Shklovskii, Splaver, Verbiest, Webbink, Wong   +32 more
core   +1 more source

Determination of the orbital parameters of binary pulsars [PDF]

, 2008
We present a simple method for determination of the orbital parameters of binary pulsars, using data on the pulsar period at multiple observing epochs.
Bhaswati Bhattacharyya, Rajaram Nityananda   +1 more
semanticscholar   +1 more source

Characterization of fatty acid forms using benchtop NMR in omega‐3 oil supplements

Magnetic Resonance in Chemistry, Volume 62, Issue 5, Page 328-336, May 2024.
The proposed method uses benchtop NMR equipment as a tool for the quality control of commercial oil supplements. NMR experiments 1D 1H and 2D 1H‐1H COSY provide a quick and accurate approach to screen the forms of omega‐3 fatty acids in oils: triacylglycerols (TAGs), ethyl esters (EEs), and diacylglycerol (DAGs) and evaluate their ratio. Abstract Omega‐
Carla Remy, Saïda Danoun, Mathieu Delample, Cameron Morris, Véronique Gilard, Stéphane Balayssac   +5 more
wiley   +1 more source