Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Dimitris M. Christodoulou"'
Publikováno v:
Particles, Vol 7, Iss 3, Pp 653-682 (2024)
We review and meta-analyze particle data and properties of hadrons with measured rest masses. The results of our study are summarized as follows. (1) The strong-force suppression of the repulsive Coulomb forces between quarks is sufficient to explain
Externí odkaz:
https://doaj.org/article/cc519128c20349a7ad3f6b765d8c7fc2
Publikováno v:
Astronomy, Vol 3, Iss 2, Pp 139-166 (2024)
Major (exo)planetary and satellite bodies seem to concentrate at intermediate areas of the radial distributions of all the objects orbiting in each (sub)system. We show that angular-momentum transport during secular evolution of (exo)planets and sate
Externí odkaz:
https://doaj.org/article/8c9550101434417facc96899ee42442c
Publikováno v:
Astronomy, Vol 2, Iss 4, Pp 235-268 (2023)
Natural systems of units {Ui} need to be overhauled to include the dimensionless coupling constants {αUi} of the natural forces. Otherwise, they cannot quantify all the forces of nature in a unified manner. Thus, each force must furnish a system of
Externí odkaz:
https://doaj.org/article/65602dc0386249a58af6b13bd2cef08a
Publikováno v:
The Astrophysical Journal Letters, Vol 961, Iss 2, p L45 (2024)
We report the observations of two self-lensing pulses from KIC 12254688 in Transiting Exoplanet Survey Satellite (TESS) light curves. This system, containing an F2V star and white-dwarf companion, was among the first self-lensing binary systems disco
Externí odkaz:
https://doaj.org/article/5b2dab7da54d46d6941b637ef4326776
Autor:
Joseph O’Leary, Andrew Melatos, Tom Kimpson, Nicholas J. O’Neill, Patrick M. Meyers, Dimitris M. Christodoulou, Sayantan Bhattacharya, Silas G. T. Laycock
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 2, p 126 (2024)
Many accretion-powered pulsars rotate in magnetocentrifugal disequilibrium, spinning up or down secularly over multiyear intervals. The magnetic dipole moment μ of such systems cannot be inferred uniquely from the time-averaged aperiodic X-ray flux
Externí odkaz:
https://doaj.org/article/713a7409aace4c0a83ec29d52992b2db
Autor:
Joseph O’Leary, Andrew Melatos, Nicholas J. O’Neill, Patrick M. Meyers, Dimitris M. Christodoulou, Sayantan Bhattacharya, Silas G. T. Laycock
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 2, p 102 (2024)
The magnetic dipole moment μ of an accretion-powered pulsar in magnetocentrifugal equilibrium cannot be inferred uniquely from time-averaged pulse period and aperiodic X-ray flux data, because the radiative efficiency η _0 of the accretion is unkno
Externí odkaz:
https://doaj.org/article/3a196656759b440c949fbdc3a0141e7b
Publikováno v:
Axioms, Vol 12, Iss 12, p 1093 (2023)
The commonly quoted bistable Higgs potential is not a proper description of the Higgs field because, among other technical reasons, one of its stable states acquires a negative expectation value in vacuum. We rely on formal catastrophe theory to deri
Externí odkaz:
https://doaj.org/article/e61495a423df46d782dfa9b1b77518d1
Autor:
Nicholas M. Sorabella, Silas G. T. Laycock, Liam J. Neeley, Dimitris M. Christodoulou, Sayantan Bhattacharya
Publikováno v:
The Astrophysical Journal, Vol 954, Iss 1, p 59 (2023)
We report observations of four asteroid-crossing events in Transiting Exoplanet Survey Satellite light curves masquerading as self-lensing pulses from binary systems containing main-sequence stars and black hole or neutron-star companions. The observ
Externí odkaz:
https://doaj.org/article/a0701a0fd59f4d98a895191e4a12a886
Autor:
Sayantan Bhattacharya, Silas G. T. Laycock, André-Nicolas Chené, Breanna A. Binder, Dimitris M. Christodoulou, Ankur Roy, Nicholas M. Sorabella, Rigel C. Cappallo
Publikováno v:
The Astrophysical Journal, Vol 944, Iss 1, p 52 (2023)
IC 10 X-1 is an eclipsing high-mass X-ray binary containing a stellar-mass black hole (BH) and a Wolf–Rayet (WR) donor star with an orbital period of P = 34.9 hr. This binary belongs to a group of systems that can be the progenitors of gravitationa
Externí odkaz:
https://doaj.org/article/727ea2c75c6d48f788cf16b7bdc234ec
Publikováno v:
Axioms, Vol 10, Iss 2, p 94 (2021)
For each fundamental and widely used ordinary second-order linear homogeneous differential equation of mathematical physics, we derive a family of associated differential equations that share the same “degenerate” canonical form. These equations
Externí odkaz:
https://doaj.org/article/d28327c6baa54f88aeae4fba8c18edad