Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Kovaltsov, G. A. (Gennady A.)"'
Autor:
Koldobskiy, S. A. (Sergey A.), Kähkönen, R. (Riikka), Hofer, B. (Bernhard), Krivova, N. A. (Natalie A.), Kovaltsov, G. A. (Gennady A.), Usoskin, I. G. (Ilya G.)
Solar magnetic activity drives the dominant 11-year cyclic variability of different space environmental indices, but they can be delayed with respect to the original variations due to the different physical processes involved. Here, we analyzed the p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2423::72ad42d37d4a2957a488abda9ed15b82
http://urn.fi/urn:nbn:fi-fe2022042630429
http://urn.fi/urn:nbn:fi-fe2022042630429
Autor:
Usoskin, I. G. (Ilya G.), Koldobskiy, S. A. (Sergey A.), Kovaltsov, G. A. (Gennady A.), Rozanov, E. V. (Eugene V.), Sukhodolov, T. V. (Timofei V.), Mishev, A. L. (Alexander L.), Mironova, I. A. (Irina A.)
Our direct knowledge of solar eruptive events is limited to several decades and does not include extreme events, which can only be studied by the indirect proxy method over millennia, or by a large number of Sun‐like stars. There is a gap, spanning
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2423::760b360aca843d5857ef902f80530965
http://urn.fi/urn:nbn:fi-fe2020060941221
http://urn.fi/urn:nbn:fi-fe2020060941221
Autor:
Mishev, A. L. (Alexander L.), Koldobskiy, S. A. (Sergey A.), Kovaltsov, G. A. (Gennady A.), Gil, A. (Agnieszka), Usoskin, I. G. (Ilya G.)
An updated yield function for a standard NM64 neutron monitor (NM) is computed and extended to different atmospheric depths from sea level to 500 g/cm² (∼5.7 km altitude) and is presented as lookup tables and a full parametrization. The yield func
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2423::2cb90c669313100ec399f975b3192af8
http://urn.fi/urn:nbn:fi-fe202002195944
http://urn.fi/urn:nbn:fi-fe202002195944
Autor:
Koldobskiy, S. A. (Sergey A.), Bindi, V. (Veronica), Corti, C. (Claudio), Kovaltsov, G. A. (Gennady A.), Usoskin, I. G. (Ilya G.)
The newly published spectra of protons and helium over time directly measured in space by the Alpha Magnetic Spectrometer (AMS‐02) experiment for the period 2011–2017 provide a unique opportunity to calibrate ground‐based neutron monitors (NMs)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2423::139a35a63c8945d7ca82fb74f5fe9542
http://urn.fi/urn:nbn:fi-fe2019060318271
http://urn.fi/urn:nbn:fi-fe2019060318271
Autor:
Koldobskiy, S. A. (Sergey A.), Kovaltsov, G. A. (Gennady A.), Mishev, A. L. (Alexander L.), Usoskin, I. G. (Ilya G.)
A new method to reconstruct the high-rigidity part (≥ 1 GV) of the spectral fluence of solar energetic particles (SEP) for GLE events, based on the world-wide neutron monitor (NM) network data, is presented. The method is based on the effective rig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2423::509e96b32028f7071f319bf469a82fcf
http://urn.fi/urn:nbn:fi-fe2019080723675
http://urn.fi/urn:nbn:fi-fe2019080723675
Direct measurements of solar energetic particles (SEP) cover the space era of several decades, but indirectly they can be studied for thousands and millions of years backward using cosmogenic nuclides in lunar rocks and soil. With a proper nuclide pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2423::609845b9a04afff661f65a4384a25c68
http://urn.fi/urn:nbn:fi-fe2020091569607
http://urn.fi/urn:nbn:fi-fe2020091569607
A comparison of cosmic proton spectra directly measured by the Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics (PAMELA) experiment during 2006–2014 with data of polar neutron monitors for the same time interval is presented.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2423::1e1f13bc5eb1243b0f26cf230cf3529a
http://urn.fi/urn:nbn:fi-fe2018080733499
http://urn.fi/urn:nbn:fi-fe2018080733499
The “effective” rigidity of a neutron monitor for a ground-level enhancement (GLE) event is defined so that the event-integrated fluence of solar energetic protons with rigidity above it is directly proportional to the integral intensity of the G
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2423::43b6b6069ee6521d767a1cfdabbbbf09
http://urn.fi/urn:nbn:fi-fe2018080833519
http://urn.fi/urn:nbn:fi-fe2018080833519
Autor:
Gil, A. (Agnieszka), Asvestari, E. (Eleanna), Kovaltsov, G. A. (Gennady A.), Usoskin, I. (Ilya)
Variability of Galactic cosmic ray (GCR) is often expressed in terms of the modulation potential, which is typically assessed using energy-integrating ground-based detectors, such as neutron monitors (NMs) for the last decades or cosmogenic isotopes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2423::e2a4d4739ec7786c972ead9c94f26d74
http://urn.fi/urn:nbn:fi-fe2017102650306
http://urn.fi/urn:nbn:fi-fe2017102650306
Autor:
Asvestari, E. (Eleanna), Gil, A. (Agnieszka), Kovaltsov, G. A. (Gennady A.), Usoskin, I. G. (Ilya G.)
The method of assessment of galactic cosmic rays (GCR) variability over different timescales, using energy-integrating ground-based detectors such as a neutron monitor and cosmogenic isotopes ¹⁰Be and ¹⁴C stored in natural archives is revisited
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2423::ee37fb20170ab4d6061f3d5519dd5aca
http://urn.fi/urn:nbn:fi-fe2017112455055
http://urn.fi/urn:nbn:fi-fe2017112455055