Results 81 to 90 of about 809,546 (293)

Binary pulsars as dark-matter probes

, 2015
During the motion of a binary pulsar around the Galactic center, the pulsar and its companion experience a wind of dark-matter particles that can affect the orbital motion through dynamical friction.
Pani, Paolo
core   +1 more source

Probing Pulsar Winds Using Inverse Compton Scattering [PDF]

, 1999
We investigate the effects of inverse Compton scattering by electrons and positrons in the unshocked winds of rotationally-powered binary pulsars. This process can scatter low energy target photons to produce gamma rays with energies from MeV to TeV. The
Aschenbach, Ball, Bell, Chernyakova, de Jager, Emmering, Harding, Hester, Hirayama, Ho, J.G. Kirk, Johnston, Johnston, Johnston, Johnston, Jones, Kaspi, Kaspi, Kennel, Kirk, Lewis Ball, Luo, Mastichiadis, Melatos, Qiao, Rees, Tavani, Tavani, Yoshikoshi, Zhang   +29 more
core   +3 more sources

A millisecond pulsar in an extremely wide binary system [PDF]

, 2016
We report on 22 yrs of radio timing observations of the millisecond pulsar J1024−0719 by the telescopes participating in the European Pulsar Timing Array (EPTA).
C. Bassa, G. Janssen, B. Stappers, T. Tauris, T. Wevers, P. Jonker, L. Lentati, J. Verbiest, J. Verbiest, G. Desvignes, E. Graikou, L. Guillemot, P. Freire, P. Lazarus, R. N. Caballero, D. Champion, I. Cognard, A. Jessner, C. Jordan, R. Karuppusamy, Michael Kramer, K. Lazaridis, Kejia Lee, Kang Liu, A. Lyne, J. Mckee, S. Osłowski, S. Osłowski, D. Perrodin, S. Sanidas, G. Shaifullah, G. Shaifullah, R. Smits, G. Theureau, C. Tiburzi, C. Tiburzi, Weiwei Zhu   +36 more
semanticscholar   +1 more source

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   +3 more sources

Strong-Field Gravity Tests with the Double Pulsar

Physical Review X, 2021
Continued timing observations of the double pulsar PSR J0737–3039A/B, which consists of two active radio pulsars (A and B) that orbit each other with a period of 2.45 h in a mildly eccentric (e=0.088) binary system, have led to large improvements in the ...
M. Kramer, I. H. Stairs, R. N. Manchester, N. Wex, A. T. Deller, W. A. Coles, M. Ali, M. Burgay, F. Camilo, I. Cognard, T. Damour, G. Desvignes, R. D. Ferdman, P. C. C. Freire, S. Grondin, L. Guillemot, G. B. Hobbs, G. Janssen, R. Karuppusamy, D. R. Lorimer, A. G. Lyne, J. W. McKee, M. McLaughlin, L. E. Münch, B. B. P. Perera, N. Pol, A. Possenti, J. Sarkissian, B. W. Stappers, G. Theureau   +29 more
doaj   +1 more source

A massive millisecond pulsar in an eccentric binary [PDF]

, 2016
The recent discovery of a population of eccentric (e ~ 0.1) millisecond pulsar (MSP) binaries with low-mass white dwarf companions in the Galactic field represents a challenge to evolutionary models that explain MSP formation as recycling: all such ...
E. Barr, P. Freire, Michael Kramer, D. Champion, M. Berezina, C. Bassa, A. Lyne, B. Stappers   +7 more
semanticscholar   +1 more source

Strong binary pulsar constraints on Lorentz violation in gravity. [PDF]

Physical Review Letters, 2013
Binary pulsars are excellent laboratories to test the building blocks of Einstein's theory of general relativity. One of these is Lorentz symmetry, which states that physical phenomena appear the same for all inertially moving observers.
Kent Yagi, D. Blas, N. Yunes, E. Barausse   +3 more
semanticscholar   +1 more source

Real‐world outcomes of aflibercept 8 mg in patients previously treated for neovascular age‐related macular degeneration

Acta Ophthalmologica, EarlyView.
Abstract Purpose To evaluate visual, anatomical and safety outcomes of aflibercept 8 mg in previously treated patients with neovascular age‐related macular degeneration (nAMD). Methods This retrospective study included nAMD patients switched to aflibercept 8 mg from prior anti‐VEGF therapies at Sahlgrenska University Hospital between February 2024 and ...
Imadeddin Abu Ishkheidem, Esra Inci, Martin Breimer, Sofia Töyrä Silfverswärd, Madeleine Zetterberg, Marita Andersson Grönlund   +5 more
wiley   +1 more source

Relativistic gravity and binary radio pulsars [PDF]

Eighth Canadian conference on general relativity and relativistic astrophysics, 1999
Following a summary of the basic principles of pulsar timing, we present a review of recent results from timing observations of relativistic binary pulsars. In particular, we summarize the status of timing observations of the much celebrated original binary pulsar PSR B1913+16, draw attention to the recent confirmation of strong evidence for geodetic ...
openaire   +2 more sources

Gravity experiments with radio pulsars

Living Reviews in Relativity
The discovery of the first pulsar in a binary star system, the Hulse–Taylor pulsar, 50 years ago opened up an entirely new field of experimental gravity.
Paulo C. C. Freire, Norbert Wex
doaj   +1 more source