Now showing items 1-10 of 14
Isotopic composition of solar energetic particle events measured by Advanced Composition Explorer/ULEIS
Since its 1997 August launch, the Ultra Low Energy Isotope Spectrometer (ULEIS) on board the Advanced Composition Explorer (ACE) has observed a large number of solar energetic particle (SEP) events in the 0.4-3 MeV nucleonˉ¹ ...
A generalized framework for reasoning with angular directions
This extended abstract presents a new scheme for qualitative reasoning with directions between points in 2D-space, called Star-ontology(6). The current results of our study on the complexity issues for reasoning with ...
Acceleration of ³He nuclei at interplanetary shocks
e have surveyed the 0.5-2.0 MeV nucleonˉ¹ ion composition of 56 interplanetary (IP) shocks observed with the Ultra - Low-Energy Isotope Spectrometer on board the Advanced Composition Explorer from 1997 October 1 through ...
On the origin of reverse polarity TCRs
Reverse polarity, or South-then-North (SN) bipolar, traveling compression regions (SN TCRs) are often observed in the Earth's magnetotail lobes. These events have been interpreted as either slowly earthward propagating ...
Multiband microvariability observations of BL lacertae during the outburst of 1997
BL Lac was observed in the V and R bands on 11 nights in 1997 July during a major optical outburst. It varied continuously, exhibiting nightly variations ranging from 0.1 to 0.6 mag. Over the course of the 11 nights, BL ...
Seawater temperature trends at USA tide gauge sites
Seawater temperatures have been measured at United States tide gauges throughout most of the 20th century. All available records have been digitized, and the longest 14 have been analyzed by linear least-square regression. ...
Evidence of different magnetotail responses to small solar wind pressure pulses depending on IMF Bz polarity
The response of the magnetotail to small flux rope associated pressure pulses depends on the IMF Bz polarity. Clear and large amplitude magnetotail reverse polarity South-then-North traveling compression regions (SN TCRs) ...
Existence Criteria for Singular Initial Value Problems with Sign Changing Nonlinearities
A general existence theory is presented for initial value problems where our nonlinearity may be singular in its dependent variable and may also change sign.
White dwarfs in common proper motion binary systems: Mass distribution and kinematics
We present the mass distribution, gravitational redshifts, radial velocities, and space motions of white dwarf stars in common proper motion binary systems. The mass distribution we derive for the 41 DA white dwarfs in ...
Automated alignment by hybrid video and 3-D video moiré with both conventional and parallel processing
A problem common to automated assembly in manufacturing or in automated docking of spacecraft is angular and lateral alignment of components. A hybrid video system utilizing both conventional imaging and 3-D video moiré ...