Fluxes of low-energy particles in quiet periods of solar activity and the mgii index

M. A. Zeldovich, Yu I. Logachev, K. Kecskeméty, G. M. Surova

Research output: Article

2 Citations (Scopus)

Abstract

Low fluxes of protons with energies 0.3-10 MeV were studied during 21-23 solar cycles as a function of the MgII index using the data of the instruments CPME, EIS (IMP8), and EPHIN (SOHO). It has been shown that a) during quiet time of solar activity the fluxes of protons (background protons) have a positive correlation with the MgII index value throughout the solar cycle, b) specific features of variations of the MgII index during the solar minima of 1986-1987 and 1996-1997 can be considered, as well as variations of background fluxes of low energy charged particles, to be manifestations of the 22-year magnetic cycle of the Sun, and c) periods of the lowest value of the MgII index are also characterized by the smaller values of the ratio of intensities of protons and helium nuclei than in other quiet periods. A hypothesis is put forward that acceleration in a multitude of weak solar flares is one of the sources of background fluxes of low energy particles in the interplanetary space.

Original languageEnglish
Pages (from-to)378-383
Number of pages6
JournalCosmic Research
Volume47
Issue number5
DOIs
Publication statusPublished - okt. 2009

Fingerprint

solar activity
particle energy
Protons
Fluxes
protons
solar cycles
solar cycle
energy
interplanetary space
Charged particles
solar flares
Sun
helium
Helium
charged particles
sun
cycles
nuclei
index
particle

ASJC Scopus subject areas

  • Aerospace Engineering
  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Fluxes of low-energy particles in quiet periods of solar activity and the mgii index. / Zeldovich, M. A.; Logachev, Yu I.; Kecskeméty, K.; Surova, G. M.

In: Cosmic Research, Vol. 47, No. 5, 10.2009, p. 378-383.

Research output: Article

Zeldovich, M. A. ; Logachev, Yu I. ; Kecskeméty, K. ; Surova, G. M. / Fluxes of low-energy particles in quiet periods of solar activity and the mgii index. In: Cosmic Research. 2009 ; Vol. 47, No. 5. pp. 378-383.
@article{c708647415ea4d9da85f6bc780966416,
title = "Fluxes of low-energy particles in quiet periods of solar activity and the mgii index",
abstract = "Low fluxes of protons with energies 0.3-10 MeV were studied during 21-23 solar cycles as a function of the MgII index using the data of the instruments CPME, EIS (IMP8), and EPHIN (SOHO). It has been shown that a) during quiet time of solar activity the fluxes of protons (background protons) have a positive correlation with the MgII index value throughout the solar cycle, b) specific features of variations of the MgII index during the solar minima of 1986-1987 and 1996-1997 can be considered, as well as variations of background fluxes of low energy charged particles, to be manifestations of the 22-year magnetic cycle of the Sun, and c) periods of the lowest value of the MgII index are also characterized by the smaller values of the ratio of intensities of protons and helium nuclei than in other quiet periods. A hypothesis is put forward that acceleration in a multitude of weak solar flares is one of the sources of background fluxes of low energy particles in the interplanetary space.",
author = "Zeldovich, {M. A.} and Logachev, {Yu I.} and K. Kecskem{\'e}ty and Surova, {G. M.}",
year = "2009",
month = "10",
doi = "10.1134/S0010952509050062",
language = "English",
volume = "47",
pages = "378--383",
journal = "Cosmic Research",
issn = "0010-9525",
publisher = "Maik Nauka-Interperiodica Publishing",
number = "5",

}

TY - JOUR

T1 - Fluxes of low-energy particles in quiet periods of solar activity and the mgii index

AU - Zeldovich, M. A.

AU - Logachev, Yu I.

AU - Kecskeméty, K.

AU - Surova, G. M.

PY - 2009/10

Y1 - 2009/10

N2 - Low fluxes of protons with energies 0.3-10 MeV were studied during 21-23 solar cycles as a function of the MgII index using the data of the instruments CPME, EIS (IMP8), and EPHIN (SOHO). It has been shown that a) during quiet time of solar activity the fluxes of protons (background protons) have a positive correlation with the MgII index value throughout the solar cycle, b) specific features of variations of the MgII index during the solar minima of 1986-1987 and 1996-1997 can be considered, as well as variations of background fluxes of low energy charged particles, to be manifestations of the 22-year magnetic cycle of the Sun, and c) periods of the lowest value of the MgII index are also characterized by the smaller values of the ratio of intensities of protons and helium nuclei than in other quiet periods. A hypothesis is put forward that acceleration in a multitude of weak solar flares is one of the sources of background fluxes of low energy particles in the interplanetary space.

AB - Low fluxes of protons with energies 0.3-10 MeV were studied during 21-23 solar cycles as a function of the MgII index using the data of the instruments CPME, EIS (IMP8), and EPHIN (SOHO). It has been shown that a) during quiet time of solar activity the fluxes of protons (background protons) have a positive correlation with the MgII index value throughout the solar cycle, b) specific features of variations of the MgII index during the solar minima of 1986-1987 and 1996-1997 can be considered, as well as variations of background fluxes of low energy charged particles, to be manifestations of the 22-year magnetic cycle of the Sun, and c) periods of the lowest value of the MgII index are also characterized by the smaller values of the ratio of intensities of protons and helium nuclei than in other quiet periods. A hypothesis is put forward that acceleration in a multitude of weak solar flares is one of the sources of background fluxes of low energy particles in the interplanetary space.

UR - http://www.scopus.com/inward/record.url?scp=70350367722&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=70350367722&partnerID=8YFLogxK

U2 - 10.1134/S0010952509050062

DO - 10.1134/S0010952509050062

M3 - Article

AN - SCOPUS:70350367722

VL - 47

SP - 378

EP - 383

JO - Cosmic Research

JF - Cosmic Research

SN - 0010-9525

IS - 5

ER -