Results 81 to 90 of about 22,313 (204)
Dark Energy From the Gravitational Wave Background With Scalar Field Dark Matter
Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.ABSTRACT Recent observational results, such as those from pulsar timing arrays (PTA), suggest a low‐frequency Gravitational Wave Background (GWB) permeates our universe. This opens the possibility that gravitational waves could span a broader spectrum, potentially impacting cosmological scales.
Edwin L. Pérez‐Ochoa, Tonatiuh Matos
wiley +1 more source
Tidal Interactions in Pulsar Binaries [PDF]
International Astronomical Union Colloquium, 1996 Abstract The value of using pulse timing to measure orbital variations in eccentric pulsar binaries which are close enough at periastron to interact tidally is discussed. We briefly review a model for dynamical tidal evolution which shows that chaotic orbital evolution is possible, and list several applications to real systems.
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Follow-up Investigation of 11 Pulsars Discovered in the Commensal Radio Astronomy FAST Survey
The Astrophysical JournalIn this paper, we study 11 pulsars that were discovered by the Five-hundred-meter Aperture Spherical radio Telescope (FAST) in the Commensal Radio Astronomy FAST Survey.
K. Yang +42 more
doaj +1 more source
Orbital Parameters of Binary Radio Pulsars : Revealing Their Structure, Formation, Evolution and Dynamic History [PDF]
, 2011 Orbital parameters of binary radio pulsars reveal the history of the pulsars' formation and evolution including dynamic interactions with other objects.
Bagchi, Manjari
core
Recent Developments in Degenerate Higher Order Scalar Tensor Theories
Annalen der Physik, Volume 537, Issue 2, February 2025.Degenerate Higher Order Scalar Tensor theories are reviewed, together with their applications in cosmology and astrophysics. These theories have been applied to build models of the early universe, in the description of the late‐time cosmic acceleration, as well as in astrophysics, including black hole physics. They have the potential to provide answers
Andrei Lazanu
wiley +1 more source
Orbital Trends of Binary Pulsars [PDF]
Symposium - International Astronomical Union, 2004 We try to understand the eccentricity of high-mass binary pulsars using some methods of statistical mechanics.
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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
Eichler, David, Nath, Biman B.
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Unveiling Low-frequency Eclipses in Spider Millisecond Pulsars Using Wideband GMRT Observations
The Astrophysical JournalEclipses 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 +5 more
doaj +1 more source
An Algebraic Approach to Light–Matter Interactions
Advanced Physics Research, Volume 4, Issue 1, January 2025.This is a review of an algebraic approach to light–matter interactions that is theoretically powerful and computationally friendly. Theoretical expressions can be developed and manipulated conveniently thanks to the generality of the basis on which the approach rests, and a compact notation.
Ivan Fernandez‐Corbaton
wiley +1 more source
Gamma-ray binaries: microquasars and binary systems with pulsar
Il Nuovo Cimento C, 2011 Invited talk presented at the Workshop "SciNeGHE 2010", September 8-10, 2010, Trieste, Italy; 6 pages, 1 figure.
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