Results 21 to 30 of about 38,574 (261)

Impact of Meteorological Parameters on Dispersion Modeling of Sulfur Dioxide from Gas Flares (Case Study: Sirri Island) [PDF]

open access: yesIranica Journal of Energy and Environment, 2019
In this study, in 2011 for the duration of two months, the dispersion of a major air pollutant, sulfur dioxide from gas flares of an oil field, in Iran, was investigated.
M. A. Mirrezaei
doaj   +1 more source

Effect of solar flares on 54Mn and 57Co radioactive decay constants performance [PDF]

open access: yesNuclear Technology and Radiation Protection, 2021
Changes in radioactive decay rates due to solar flares have attracted increasing scientific attention in recent decades. In previous studies we demonstrated that solar flares cause changes in the decay rate of 241Am, 222Rn, and 232Th. The change
Walg Jonathan   +4 more
doaj   +1 more source

Photometric Research of Pre-flare and Extra-flare Activity of Flare Stars [PDF]

open access: yesInternational Astronomical Union Colloquium, 1995
Preliminary results of a photometric search for non-flare activity of the flare star EV Lac during June-August 1994 are presented. These observations are part of the long-term project entitled “Investigation of pre-flare processes on flare stars” being carried out at the Observatory of the Jordan Valley Regional College since July 1994. The project was
G. Roizman, L. Pustil'nik, D. Pundak
openaire   +1 more source

The Flare Catalog and the Flare Activity in the Kepler Mission [PDF]

open access: yesThe Astrophysical Journal Supplement Series, 2019
Abstract We present a flare catalog of the Kepler mission using the long-cadence data of Data Release 25. This catalog comprises 3420 flare stars and 162,262 flare events. A comparison shows that the flare catalogs of previous studies are seriously polluted by various false-positive signals and artifacts.
Huiqin Yang, Jifeng Liu
openaire   +2 more sources

Astro-COLIBRI 2—An Advanced Platform for Real-Time Multi-Messenger Discoveries

open access: yesGalaxies, 2023
The study of flaring astrophysical events in the multi-messenger approach requires instantaneous follow-up observations to better understand the nature of these events through complementary observational data.
Patrick Reichherzer   +5 more
doaj   +1 more source

What aspects of solar flares can be clarified with mm/submm observations?

open access: yesFrontiers in Astronomy and Space Sciences, 2022
This paper identifies several unsolved questions about solar flares, which can potentially be answered or at least clarified with mm/submm observations with ALMA.
Gregory D. Fleishman   +3 more
doaj   +1 more source

Retrospective analysis of GLEs and estimates of radiation risks

open access: yesJournal of Space Weather and Space Climate, 2018
28 February 2017 marked 75 years since the first confident registration of solar cosmic rays (SCRs), i.e., accelerated solar particles with energies from about 106 to ~1010 ÷ 1011 eV.
Miroshnichenko Leonty I.
doaj   +1 more source

Quasi-Periodic Pulsations in an M-Class Solar Flare

open access: yesUniverse, 2023
We have studied the quasi-periodic pulsations (QPPs) of the M2.3 flare that occurred in the active region NOAA 12172 on 23 September 2014. Through the fast Fourier transform (FFT) method, we decompose the flare light curves into fast- and slowly-varying ...
Jun Xu   +3 more
doaj   +1 more source

Multi-Periodicity of High-Frequency Type III Bursts as a Signature of the Fragmented Magnetic Reconnection

open access: yesUniverse, 2023
Using the radio spectra of the 2 April 2022 eruptive flare, we analyze a group of highfrequency type III bursts by our new wavelet method. In this analysis, we found a multi-periodicity of these bursts that is interpreted by the electron beams ...
Marian Karlický, Ján Rybák
doaj   +1 more source

Algorithm for choosing the best frame in a video stream in the task of identity document recognition [PDF]

open access: yesКомпьютерная оптика, 2021
During the process of document recognition in a video stream using a mobile device camera, the image quality of the document varies greatly from frame to frame.
M.A. Aliev   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy