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  1. Journal of Astrophysics and Astronomy
  2. Journal of Astrophysics and Astronomy : Volume 29
  3. Journal of Astrophysics and Astronomy : Volume 29, Issue 1-2, June 2008
  4. Geo-effectiveness of CMEs
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Journal of Astrophysics and Astronomy : Volume 38
Journal of Astrophysics and Astronomy : Volume 37
Journal of Astrophysics and Astronomy : Volume 36
Journal of Astrophysics and Astronomy : Volume 35
Journal of Astrophysics and Astronomy : Volume 34
Journal of Astrophysics and Astronomy : Volume 33
Journal of Astrophysics and Astronomy : Volume 32
Journal of Astrophysics and Astronomy : Volume 31
Journal of Astrophysics and Astronomy : Volume 30
Journal of Astrophysics and Astronomy : Volume 29
Journal of Astrophysics and Astronomy : Volume 29, Issue 3-4, December 2008
Journal of Astrophysics and Astronomy : Volume 29, Issue 1-2, June 2008
Editorial
Keynote address: Outstanding problems in solar physics
Solar magnetic fields
Global solar dynamo models: Simulations and predictions
Prospects for predicting cycle 24
What helicity can tell us about solar magnetic fields
The evolution of vector magnetic field associated with major flares in NOAA AR10656
Inductive magnetic footpoint tracking by combining the minimum energy fit with the local correlation tracking and doppler velocity
Prediction of peaks in wolf numbers in cycle 24 according to actual numbers of polar faculae
Helioseismology and the solar cycle: Past, present and future
Seismic study of magnetic field in the solar interior
Helioseismic effects of energetic transients
Magnetic and velocity field variations in the active regions NOAA 10486 and NOAA 10488
Software for interactively visualizing solar vector magnetograms of udaipur solar observatory
Solar flare physics enlivened by TRACE and RHESSI
X-ray emission from solar flares
X-ray studies of flaring plasma
Models of solar irradiance variations: Current status
Spatially resolved images and solar irradiance variability
Wave heating of the solar chromosphere
Ultraviolet spectroscopic observations of coronal streamers in the SOHO era
Microflares as possible sources for coronal heating
Initiation and propagation of coronal mass ejections
UV diagnostics for the energy budget of flares and CMEs
X-ray emission characteristics of flares associated with CMEs
Helioseismic ring analysis of CME source regions
Analysis of ion charge states in solar wind and CMEs
The solar wind: Our current understanding and how we got here
Numerical simulations of kinetic Alfvén waves to study spectral index in solar wind turbulence and particle heating
Damping of slow magnetoacoustic waves in an inhomogeneous coronal plasma
Hα intensity oscillations in large flares
Role of magnetic carpet in coronal heating
Multi-parametric effect of solar activity on cosmic rays
Solar and interplanetary disturbances causing moderate geomagnetic storms
Effect of magnetic activity on ionospheric time delay at low latitude
Geomagnetic field variation during winter storm at localized southern and northern high latitude
Effect of interplanetary magnetic field and disturb storm time on H component
Geo-effectiveness of CMEs
Relationship between interplanetary (IP) parameters and geomagnetic indices during IP shock events of 2005
Multipoint observations of low latitude ULF Pc3 waves in south-east Australia
Energy dependence of near-relativistic electron spectrum at geostationary orbit during the SEP events of 2005
Next generation UV coronagraph instrumentation for solar cycle-24
High resolution observations using adaptive optics: Achievements and future needs
SphinX: A fast solar Photometer in X-rays
Proposed national large solar telescope
Development of a low-order Adaptive Optics system at Udaipur Solar Observatory
Utilization of GPS satellites for precise irradiation measurement and monitoring
Journal of Astrophysics and Astronomy : Volume 28
Journal of Astrophysics and Astronomy : Volume 27
Journal of Astrophysics and Astronomy : Volume 26
Journal of Astrophysics and Astronomy : Volume 25
Journal of Astrophysics and Astronomy : Volume 24
Journal of Astrophysics and Astronomy : Volume 23
Journal of Astrophysics and Astronomy : Volume 22
Journal of Astrophysics and Astronomy : Volume 21
Journal of Astrophysics and Astronomy : Volume 20
Journal of Astrophysics and Astronomy : Volume 19
Journal of Astrophysics and Astronomy : Volume 18

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Geo-effectiveness of CMEs

Content Provider Springer Nature Link
Author Jadeja, Ajaysinh K. Iyer, K. N. Vats, Hari Om Maharan, P. K.
Copyright Year 2008
Abstract Coronal Mass Ejections (CMEs) are important phenomena in coronal dynamics causing interplanetary signatures (ICMEs). They eject large amounts of mass and magnetic fields into the heliosphere, causing major geomagnetic storms and interplanetary shocks. Geomagnetic storms are often characterized by abrupt increases in the northward component of the earth’s field, called sudden commencements (SSC) followed by large decreases of the magnetic field and slow recovery to normal values. The SSCs are well correlated with IP shocks. Here a case study of 10–15 February 2000 and also the statistical study of CME events observed by IPS array, Rajkot, during the years 2000 to 2003 and Radio Astronomy Center, Ooty are described. The geomagnetic storm index Dst, which is a measure of geo-effectiveness, is shown to be well correlated with normalized scintillation index ‘g’, derived from Ooty Radio Telescope (ORT) observations.
Starting Page 287
Ending Page 291
Page Count 5
File Format PDF
ISSN 02506335
Journal Journal of Astrophysics and Astronomy
Volume Number 29
Issue Number 1-2
e-ISSN 09737758
Language English
Publisher Springer-Verlag
Publisher Date 2008-10-29
Publisher Institution Indian Academy of Sciences
Publisher Place India
Access Restriction One Nation One Subscription (ONOS)
Subject Keyword Coronal mass ejection interplanetary medium and normamalized scintillation index Astrophysics Astronomy
Content Type Text
Resource Type Article
Subject Astronomy and Astrophysics Space and Planetary Science
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