Spectral characteristics of field variations during geomagnetically quiet conditions.
نویسندگان
چکیده
منابع مشابه
Cosmic Ray Modulation on Geomagnetically Most Quiet Days
Abstract The aim of this work is to study the first three harmonics of cosmic ray intensity on geo-magnetically most quiet days over the period 1980-1990 for Deep River and Tokyo neutron monitoring station. The main characteristic of these events is that the amplitude of first harmonic remains high for Deep River having low cutoff rigidity compared to Tokyo neutron monitor having high cutoff ri...
متن کاملPulse Phase Variations of the X – Ray Spectral Features in the Radio - Quiet Neutron Star
We present the results of an XMM-Newton observation of the radio-quiet X–ray pulsar 1E 1207–5209 located at the center of the shell-like supernova remnant G 296.5+10.0. The X–ray spectrum is characterized by the presence of two phase-dependent absorption lines at energies ∼0.7 keV and ∼1.4 keV. Moreover, these broad spectral features have significant substructure, suggesting that they are due t...
متن کاملSpectral Index Variations and Physical Conditions in Kepler ’
A new epoch of VLA measurements of Kepler’s supernova remnant was obtained to make accurate measurements of the radio spectral index variations and polarization. We have compared these new radio images with Hα, infrared, and X-ray data to better understand the three dimensional structure and dynamics of Kepler, and to better understand the physical relationships between the various nonthermal a...
متن کاملEUV brightness variations in the quiet Sun
The Coronal Diagnostic Spectrometer (CDS) onboard the SOHO satellite has been used to obtain movies of quiet Sun regions at disc centre. These movies were used to study brightness variations of solar features at three different temperatures sampled simultaneously in the chromospheric He I 584.3 Å (2·104 K), the transition region O V 629.7 Å (2.5·105 K) and coronal Mg IX 368.1 Å (106 K) lines. I...
متن کاملsimulation and experimental studies for prediction mineral scale formation in oil field during mixing of injection and formation water
abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...
ذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of geomagnetism and geoelectricity
سال: 1977
ISSN: 0022-1392
DOI: 10.5636/jgg.29.29