Results 11 to 20 of about 2,637 (230)

Binary and Millisecond Pulsars [PDF]

Living Reviews in Relativity, 1998
Our knowledge of binary and millisecond pulsars has greatly increased in recent years. This is largely due to the success of large-area surveys which have brought the known population of such systems in the Galactic disk to around 50.
Duncan R. Lorimer
doaj   +13 more sources

Algorithmic Pulsar Timer for Binaries

The Astrophysical Journal
Pulsar timing is a powerful tool that, by accounting for every rotation of a pulsar, precisely measures the spin frequency, spin frequency derivatives, astrometric position, binary parameters when applicable, properties of the interstellar medium, and ...
Jackson Taylor, Scott Ransom, Prajwal V. Padmanabh   +2 more
doaj   +4 more sources

Discovery of three binary millisecond pulsars

The Astrophysical Journal, 1994
We report the discovery of three binary millisecond pulsars in circular orbits with low-mass companions from a continuing survey of the southern sky with the Parkes radio telescope. The three pulsars, PSR J0034-0534, PSR J1045-4509, and PSR J2145-0750 have pulse periods of 1.87, 7.47, and 16.05 ms and orbital periods of 1.6, 4.1, and 6.8 days ...
M. Bailes, Paul Harrison, D. R. Lorimer, S. Johnston, A. G. Lyne, R. N. Manchester, N. D’Amico, L. Nicastro, Thomas M. Tauris, C. Robinson   +9 more
openalex   +5 more sources

Binary and Millisecond Pulsars [PDF]

Annual Review of Astronomy and Astrophysics, 1994
Most of the ~600 known pulsars are single and located in the disk of our Galaxy. There is circumstantial evidence that the pulsars in this majority are created in supernova (SN) explosions, by the collapse of the cores of massive stars (initial mass M_i ≳ M_(cr) ≃ 8 M_⊙). One is created roughly every 100 y in the Galaxy.
Phinney, E. S., Kulkarni, S. R.
openaire   +3 more sources

Testing extra dimensions with the binary pulsar [PDF]

Classical and Quantum Gravity, 2004
In this letter we calculate the emission of gravity waves by the binary pulsar in the framework of five dimensional braneworlds. We consider only spacetimes with one compact extra-dimension. We show that the presence of additional degrees of freedom, especially the 'gravi-scalar' leads to a modification of Einstein's quadrupole formula.
Durrer, Ruth, Kocian, Philippe
openaire   +5 more sources

A Massive Pulsar in a Compact Relativistic Binary [PDF]

Science, 2013
Pulsar Tests GravityBecause of their extremely high densities, massive neutron stars can be used to test gravity. Based on spectroscopy of its white dwarf companion,Antoniadiset al.(p.448) identified a millisecond pulsar as a neutron star twice as heavy as the Sun.
Paulo C. C. Freire, Timothy T. Pennucci, Scott M. Ransom, Joeri van Leeuwen, Joeri van Leeuwen, Norbert Langer, V. I. Kondratiev, V. I. Kondratiev, Victoria M. Kaspi, David G. Whelan, Ingrid H. Stairs, T. Driebe, Maura McLaughlin, John Antoniadis, Marten H. van Kerkwijk, Thomas M. Tauris, Norbert Wex, V. S. Dhillon, Ryan S. Lynch, C. G. Bassa, Michael Kramer, Michael Kramer, Jason W. T. Hessels, Jason W. T. Hessels, Tom Marsh, Joris P. W. Verbiest   +25 more
openaire   +5 more sources

On the detectability of eccentric binary pulsars [PDF]

Monthly Notices of the Royal Astronomical Society, 2013
By generalizing earlier work of Johnston & Kulkarni, we present a detailed description of the reduction in the signal-to-noise ratio for observations of binary pulsars. We present analytical expressions, and provide software, to calculate the sensitivity reduction for orbits of arbitrary eccentricity.
Manjari Bagchi, Spencer A. Wolfe, D. R. Lorimer, D. R. Lorimer, D. R. Lorimer   +4 more
openaire   +3 more sources

Interpretation of Binary Pulsar Observations [PDF]

Symposium - International Astronomical Union, 1981
The nature, dynamics and evolution of the three known radio pulsar binaries are discussed. The system containing 1913+16 appears to comprise two ~1.4 M⊙ components, and to undergo orbital decay as predicted by general relativity. It is proposed that 1913+16 has a neutron star companion and that 0655+64 and 0820+02 have white dwarf companions which ...
Blandford, R. D., DeCampli, W. M.
openaire   +5 more sources

Radiation Dosimetry of Binary Pulsars [PDF]

The Astrophysical Journal, 1996
Companion stars exposed to high energy radiation from a primary neutron star or accreting black hole can experience significant spallation of their heavy elements, so that their atmospheres would be extremely rich in lithium, beryllium, and especially boron. In this paper we note that the detection or non-detection of these elements, and their relative
Biman B. Nath, David Eichler
openaire   +3 more sources

5‐Fluoro/(trifluoromethoxy)‐2‐indolinone derivatives with anti‐interleukin‐1 activity

Archiv der Pharmazie, Volume 356, Issue 12, December 2023., 2023
Novel 5‐fluoro/(trifluoromethoxy)‐2‐indolinone derivatives were designed and synthesized based on in silico and preliminary in vitro test results from lead compounds. All compounds tested displayed nontoxic IL‐1 receptor inhibitory effects at IC50 values in the range of 10 nM to 13 µM, and seven compounds showed inhibitory responses stronger than the ...
Özge Soylu‐Eter, Zekiye Şeyma Sevinçli, Betül Ersoy, Bahar Hasanusta, Uğur Gatfar, Nathan A. Lack, Burak Erman, Ahmet Gül, Hakan S. Orer, Nilgün Karalı   +9 more
wiley   +1 more source