Results 41 to 50 of about 1,859,004 (334)

A Statistical Study of Short-period Decayless Oscillations of Coronal Loops in an Active Region

open access: yesThe Astrophysical Journal, 2023
Coronal loop oscillations are common phenomena in the solar corona, which are often classified as decaying and decayless oscillations. Using the high-resolution observation measured by the Extreme Ultraviolet Imager (EUI) on board the Solar Orbiter, we ...
Dong Li, David M. Long
doaj   +1 more source

Geotomography with solar and supernova neutrinos [PDF]

open access: yes, 2005
We show how by studying the Earth matter effect on oscillations of solar and supernova neutrinos inside the Earth one can in principle reconstruct the electron number density profile of the Earth. A direct inversion of the oscillation problem is possible
A. B. Borisov   +23 more
core   +3 more sources

Solar neutrino oscillation phenomenology [PDF]

open access: yesPramana, 2004
This article summarises the status of the solar neutrino oscillation phenomenology at the end of 2002 in the light of the SNO and KamLAND results. We first present the allowed areas obtained from global solar analysis and demonstrate the preference of the solar data towards the Large-Mixing-Angle (LMA) MSW solution. A clear confirmation in favor of the
openaire   +2 more sources

Present Status of Neutrino Mixing [PDF]

open access: yes, 2001
A short review of the status of neutrino mixing and neutrino oscillations is given. The basics of neutrino mixing and oscillations is discussed. The latest evidences of neutrino oscillations obtained in the Super-Kamiokande and the SNO solar neutrino ...
B. Pontecorvo   +22 more
core   +3 more sources

Solar neutrino oscillations [PDF]

open access: yesNuclear Physics A, 1994
The special properties of solar neutrinos that render this flux so uniquely important in searches for neutrino masses and flavor mixing are reviewed. The effects of matter, including density fluctuations and turbulence, on solar neutrino oscillations are explained through analogies with more familiar atomic physics phenomena.
openaire   +3 more sources

Dissipative Instability of Magnetohydrodynamic Sausage Waves in a Compressional Cylindrical Plasma: Effect of Flow Shear and Viscosity Shear

open access: yesThe Astrophysical Journal, 2023
The shear flow influences the stability of magnetohydrodynamic (MHD) waves. In the presence of a dissipation mechanism, flow shear may induce an MHD wave instability below the threshold of the Kelvin–Helmholtz instability, which is called dissipative ...
D. J. Yu
doaj   +1 more source

Temporal variations of the rotation rate in the solar interior [PDF]

open access: yes, 2000
The temporal variations of the rotation rate in the solar interior are studied using frequency splittings from Global Oscillations Network Group (GONG) data obtained during the period 1995-99.
Basu S., H. M. Antia, Sarbani Basu
core   +3 more sources

Techniques for Observing Solar Oscillations [PDF]

open access: yesSymposium - International Astronomical Union, 1988
There is currently a wide range of methods for observing the properties of solar oscillations. It is generally true, however, that the means used to analyze the data are just as important to the final result as the instrumentation. I discuss first the instrumental techniques used to observe solar p-modes, with attention given both to low- and no ...
openaire   +1 more source

Solar-like oscillations in a metal-poor globular cluster with the HST

open access: yes, 2009
We present analyses of variability in the red giant stars in the metal-poor globular cluster NGC6397, based on data obtained with the Hubble Space Telescope.
Bedding   +20 more
core   +1 more source

Solar neutrino oscillations in the quasi-vacuum regime [PDF]

open access: yes, 2001
Motivated by recent experimental data, we study solar neutrino oscillations in the range 10^-10 < delta m^2/E < 10^-7 eV^2/MeV. In this range vacuum oscillations become increasingly affected by (solar and terrestrial) matter effects for increasing delta ...
Bahcall   +27 more
core   +5 more sources

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