Results 61 to 70 of about 120,963 (192)

Variability of Solar Five-Minute Oscillations in the Corona as Observed by the Extreme Ultraviolet Spectrophotometer (ESP) on the Solar Dynamics Observatory Extreme Ultraviolet Variability Experiment (SDO/EVE)

, 2012
Solar five-minute oscillations have been detected in the power spectra of two six-day time intervals from soft X-ray measurements of the Sun observed as a star using the Extreme Ultraviolet Spectrophotometer (ESP) onboard the Solar Dynamics Observatory ...
Didkovsky, Leonid, Judge, Darrell, Kosovichev, Alexander, Wieman, Seth, Woods, Tom   +4 more
core   +1 more source

Investigation of quasi-periodic variations in hard X-rays of solar flares. II. Further investigation of oscillating magnetic traps [PDF]

, 2011
In our recent paper (Solar Physics 261, 233) we investigated quasi-periodic oscillations of hard X-rays during impulsive phase of solar flares. We have come to conclusion that they are caused by magnetosonic oscillations of magnetic traps within the ...
A. Frank, B. Lipa, B.V. Somov, G.D. Fleishman, G.J. Fishman, J. Jakimiec, J. Jakimiec, J. Jakimiec, J. Jakimiec, M. Karlický, M. Tomczak, M. Tomczak, M.J. Aschwanden, M.J. Aschwanden, P.A. Bradley, S. Krucker, S. Tsuneta, S.A. Bogachev, T. Kosugi, T.N. LaRosa, U. Bak-Steślicka, U. Bak-Steślicka, V.F. Melnikov, V.M. Nakariakov   +23 more
core   +2 more sources

The Role of High-frequency Transverse Oscillations in Coronal Heating

The Astrophysical Journal Letters, 2023
Transverse oscillations that do not show significant damping in solar coronal loops are found to be ubiquitous. Recently, the discovery of high-frequency transverse oscillations in small-scale loops has been accelerated by the Extreme Ultraviolet Imager ...
Daye Lim, Tom Van Doorsselaere, David Berghmans, Richard J. Morton, Vaibhav Pant, Sudip Mandal   +5 more
doaj   +1 more source

Solar Oscillations and Convection. I. Formalism for Radial Oscillations [PDF]

The Astrophysical Journal, 2001
Comment: 13 pages, 3 ...
Nordlund, Åke, Stein, R.F.
openaire   +2 more sources

Seasonal Variations of the 7Be Solar Neutrino Flux

, 1999
Measuring the 7Be solar neutrino flux is crucial towards solving the solar neutrino puzzle. The Borexino experiment, and possibly the KamLAND experiment, will be capable of studying the 7Be neutrinos in the near future.
A. de Gouvêa, A. Loeb, Alexander Friedland, André de Gouvêa, B. Faid, B. Faid, B. T. Cleveland, Dzh. N. Abdurashitov, G. L. Fogli, H. Minakata, Hitoshi Murayama, J. M. Gelb, J. N. Bahcall, J. N. Bahcall, J. N. Bahcall, J. N. Bahcall, J. N. Bahcall, J. N. Bahcall, J. N. Bahcall, J. N. Bahcall, J. Pantaleone, K. S. Hirata, K. Whisnant, L. Wolfenstein, M. Maris, P. I. Krastev, P. I. Krastev, P. I. Krastev, R. Barbieri, R. Ehrlich, S. L. Glashow, S. L. Glashow, S. M. Bilenky, S. P. Mikheyev, S. Pakvasa, S. T. Petcov, S. T. Petcov, V. Barger, V. Barger, V. N. Gribov, W. Hampel, Y. Fukuda, Y. Fukuda, Z. G. Berezhiani   +43 more
core   +1 more source

Seismological insights into solar and stellar magnetic activity cycles

EPJ Web of Conferences, 2017
The Sun’s magnetic activity cycle varies primarily on a time scale of approximately 11yrs from minimum to maximum and back again. It is well-known that the properties of the Sun’s acoustic oscillations are affected by the near-surface internal magnetic ...
Broomhall Anne-Marie
doaj   +1 more source

Evidence of a Quasiperiodic Global-scale Oscillation in the Near-surface Shear Layer of the Sun

The Astrophysical Journal Letters, 2023
We present evidence of hitherto undiscovered global-scale oscillations in the near-surface shear layer of the Sun. These oscillations are seen as large-scale variations of radial shear in both the zonal and meridional flows relative to their mean values.
Richard S. Bogart, Charles S. Baldner, Sarbani Basu, Rachel Howe, Maria Cristina Rabello Soares   +4 more
doaj   +1 more source

Low-amplitude Solar-like Oscillations in the K5 V Star ϵ Indi A

The Astrophysical Journal
We have detected solar-like oscillations in the mid-K-dwarf ϵ Indi A, making it the coolest dwarf to have measured oscillations. The star is noteworthy for harboring a pair of brown dwarf companions and a Jupiter-type planet.
Mia S. Lundkvist, Hans Kjeldsen, Timothy R. Bedding, Mark J. McCaughrean, R. Paul Butler, Ditte Slumstrup, Tiago L. Campante, Conny Aerts, Torben Arentoft, Hans Bruntt, Cátia V. Cardoso, Fabien Carrier, Laird M. Close, João Gomes da Silva, Thomas Kallinger, Robert R. King, Yaguang Li, Simon J. Murphy, Jakob L. Rørsted, Dennis Stello   +19 more
doaj   +1 more source

The application of a Trous wave filtering and Monte Carlo analysis on SECIS 2001 solar eclipse observations

, 2005
8000 images of the Solar corona were captured during the June 2001 total Solar eclipse. New software for the alignment of the images and an automated technique for detecting intensity oscillations using multi scale wavelet analysis were developed.
A. C. Katsiyannis, A. C. Katsiyannis, A. F. Nemec, B. Roberts, C. Torrence, D. Banerjee, D. R. Williams, D. R. Williams, E. O'Shea, F. Murtagh, F. P. Keenan, J. M. Pasachoff, J. M. Pasachoff, J.-L. Starck, K. J. H. Phillips, S. Koutchmy, V. M. Nakariakov   +16 more
core   +1 more source

Physics of solar-like oscillations [PDF]

Solar Physics, 2004
AbstractThe physics of solar and stellar oscillations determine their observable characteristics. I provide a brief overview of the properties of solar-like oscillations, excited by stochastic processes, in other stars. In addition, I consider the current state of investigations of such oscillations, as well as the prospects for an improved ...
openaire   +2 more sources