搜索结果: 1-14 共查到“太阳与太阳系 Activity”相关记录14条 . 查询时间(0.106 秒)
Scientists last autumn revealed that the gas phosphine was found in trace amounts in Venus’ upper atmosphere. That discovery promised the slim possibility that phosphine serves as a biological signatu...
The HARPS search for southern extra-solar planets. XXXI. Magnetic activity cycles in solar-type stars: statistics and impact on precise radial velocities
Planetary systems – Stars: activity – Stars: chromospheres – Line: profi les – Techniques: radial velocities – Techniques:spectroscopic
2011/10/17
Context. Searching for extrasolar planets through radial velocity measurements relies on the stability of stellar photospheres. Aims. We aim at characterizing the statistical properties of magnetic ac...
The HARPS search for southern extra-solar planets. XXX. Planetary systems around stars with solar-like magnetic cycles and short-term activity variation
stars: planetary systems – techniques: radial velocities – stars: activity – stars: individual: HD7199 – stars: individual
2011/9/30
We present the discovery of four new long-period planets within the HARPS high-precision sample: \object{HD137388}b ($M\sin{i}$ = 0.22 $M_J$), \object{HD204941}b ($M\sin{i}$ = 0.27 $M_J$), \object{HD7...
The Influence of Solar Activity on the Rainfall over India: Cycle-to-Cycle Variations
Solar activity Indian rainfall galactic cosmic rays volcanic or interstellar dust
2010/9/17
We use 130 years data for studying correlative effects due to solar cycle and activity phenomena on the occurrence of rainfall over India. For the period of different solar cycles, we compute the corr...
The Extreme Solar Activity during October–November 2003
Sunspots rotation flare extreme activity
2010/9/17
The positional measurements of sunspots from the Kodaikanal Observatory and Solar Geophysical data are used to study the association between occurrence of the abnormal activities of big sunspot groups...
Energetic neutral atom fluxes from the heliosheath varying with the activity phase of the solar cycle
Energetic neutral atom fluxes solar cycle
2009/5/27
Energetic neutral atoms (ENA's) which are produced in the heliospheric interface can be used to remotely investigate this highly interesting, but poorly known region acting as buffer against the inter...
Long-term variation in the distribution of the solar filaments
observed at the Observatorie de Paris, Section de Meudon from March
1919 to December 1989 is presented to compare with sunspot cycle a...
The Influence of Solar Activity on the Rainfall over India：Cycle-to-Cycle Variations
Solar activity Indian rainfall galactic cosmic rays volcanic or interstellar dust
2009/5/7
We use 130 years data for studying correlative effects due to solar cycle and activity phenomena on the occurrence of rainfall over India. For the period of different solar cycles, we compute the corr...
The Extreme Solar Activity during October–November 2003
Sunspots rotation flare extreme activity
2009/5/7
The positional measurements of sunspots from the Kodaikanal Observatory and Solar Geophysical data are used to study the association between occurrence of the abnormal activities of big sunspot groups...
Effect of Magnetic Activity on Ionospheric Time Delay at Low Latitude
Ionospheric time delay scintillation TEC geomagnetic storm
2009/5/6
The purpose of this work is to investigate the effect of magnetic
activity on ionospheric time delay at low latitude Station Bhopal
(geom. lat. 23.2◦N, geom. long. 77.6◦E) using dual fre...
Multi-parametric Effect of Solar Activity on Cosmic Rays
Sun solar parameters cosmic ray modulation running multiple correlation method
2009/5/6
The long-term modulation of cosmic ray intensity (CRI) by
different solar activity (SA) parameters and an inverse correlation between
individual SA parameter and CRI is well known. Earlier, it has b...
SOLAR ACTIVITY INFLUENCE ON EQUIVALENT WIDTHS OF SOME PHOTOSPHERIC LINES
SOLAR ACTIVITY PHOTOSPHERIC LINES EQUIVALENT WIDTHS
2009/4/23
SOLAR ACTIVITY INFLUENCE ON EQUIVALENT WIDTHS OF SOME PHOTOSPHERIC LINES。
SENSITIVITY OF THE MnI 539.47 nm SPECTRAL LINE TO SOLAR ACTIVITY
Sun activity - Techniques spectroscopic - Line profiles
2009/3/5
observations of the MnI 539.47 nm spectral line in the solar
ux made at the Astronomical Observatory in Belgrade between 1994 and 2003
have been reduced and certain line parameters, viz. the equival...
Long-term variation in the distribution of the solar filaments observed at the Observatorie de Paris, Section de Meudon from March 1919 to December 1989 is presented to compare with sunspot cycle and ...