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Observations of the December 13 and 14, 2006, Solar Particle Events in the 80 MeV/n - 3 GeV/n range from space with PAMELA detector
Observations Solar Particle Events detector
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2011/10/13
We present the space spectrometer PAMELA observations of proton and helium fluxes during the December 13 and 14, 2006 solar particle events. This is the first direct measurement of the solar energetic...
Spectroscopic evidence for helicity in explosive events
Sun: UV radiation—Sun: transition region— Sun: chromosphere
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2011/9/30
We report spectroscopic observations in support of a novel view of transition region explosive events, observations that lend empirical evidence that at least in some cases explosive events may be not...
Changes in Sea-Level Pressure over South Korea Associated with High-Speed Solar Wind Events
solar-terrestrial weather sea-level pressure solar wind
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2011/9/30
We explore a possibility that the daily sea-level pressure (SLP) over South Korea responds to the high-speed solar wind event. This is of interest in two aspects: First, if there is a statistical asso...
A2163: Merger events in the hottest Abell galaxy cluster II. Subcluster accretion with galaxy-gas separation
Galaxies clusters general – Galaxies intergalactic medium – X-rays galaxies clusters
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2010/11/16
Located at z = 0.203, A2163 is a rich galaxy cluster with an intra-cluster medium (ICM) that exhibits extraordinary properties,including an exceptionally high X-ray luminosity, average temperature, an...
Dwarf archaeology: Probing the first enrichment events with low-luminosity galaxies
Galaxy Astrophysics (astro-ph.GA) Cosmology and Extragalactic Astrophysics (astro-ph.CO)
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2010/12/27
We present a novel way to utilize metal-poor stars in the local, ultra-faint dwarf galaxies (UFDs) to learn about the formation process of the first galaxies. Since UFDs have much simpler star formati...
Enigmatic SolarWind Disappearance Events – DoWe Understand Them?
Solar wind disappearance polar field reversals transient coronal holes active regions
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2010/9/16
At the Sun–Earth distance of one astronomical unit (1AU),the solar wind is known to be strongly supersonic and super Alfv´enic with Mach and Alfv´en numbers being on average 12 and 9 respe...
Effects of Residue Background Events in Direct Detection Experiments on Determining Properties of Halo Dark Matter
Effects Direct Detection Experiments Properties of Halo Dark Matter
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2010/11/12
We reexamine the model–independent data analysis methods for extracting properties of Weakly
InteractingMassive Particles (WIMPs) by using data (measured recoil energies) from direct Dark
Matter det...
Dust obscuration events of the symbiotic nova RR tel in The near ir
symbiotic nova RR tel The near ir
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2009/6/17
Dust obscuration events of the symbiotic nova RR tel in The near ir。
Dust Formation Events in Colliding Winds：An Application to Eta Car
Dust Formation Eta Car Colliding Winds
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2009/6/15
Dust Formation Events in Colliding Winds：An Application to Eta Car。
Predicting the future from observable sequences of events in astrophysics I. Maximum Likelihood Estimation for a fixed number of parameters
astrophysics Maximum Likelihood
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2009/5/27
Using analytical and numerical methods, estimates are given of future predictions in astrophysics that can be gathered from a sequence of observed events, for example for γ-ray bursts. Some general pr...
Enigmatic SolarWind Disappearance Events–DoWe Understand Them?
Solar wind disappearance polar field reversals transient coronal holes active regions
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2009/5/7
At the Sun-Earth distance of one astronomical unit (1AU), the solar wind is known to be strongly supersonic and super Alfv´enic with Mach and Alfv´en numbers being on average 12 and 9 resp...
Energy Dependence of Near-relativistic Electron Spectrum at Geostationary Orbit during the SEP Events of 2005
SEP events shocks geostationary orbit REDs REEs
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2009/5/6
In view of the renewed interest in the study of energetic particles
in the outer radiation belt of the earth, we feel it will be helpful in
looking for the energy dependence of the electron energy s...
Relationship between Interplanetary (IP) Parameters and Geomagnetic Indices during IP Shock Events of 2005
IP parameters IP shocks solar–terrestrial relationship
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2009/5/6
In the present study, we investigate the possible relationship
of IP parameters of solar wind and interplanetary magnetic field with
ground-based geomagnetic indices. To carry out the study, we take...