17 Result(s)
within
Physics
Astronomy, Observations and Techniques
**ng Long
Conference Paper
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Chapter and Conference Paper
Observations of Supernova Remnants in the Large Magellanic Cloud with the Einstein Observatory
As the nearest extragalactic system, the Large Magellanic Cloud (LMC) is destined to play a major role in understanding the X-ray emission from all normal galaxies including our own. Classed as a prototype Sb(...
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Chapter and Conference Paper
A Soft X-Ray Study of the Large Magellanic Cloud
A survey of the Large Magellanic Cloud (LMC) has been carried out with the imaging X-ray telescope aboard the Einstein Observatory. Ninety-seven sources were detected. On statistical grounds, we estimate that les...
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Chapter and Conference Paper
An X-Ray Survey of Supernova Remnants in the Large Magellanic Cloud
The last supernova (SN) observed in the Galaxy occurred ~375 years ago and it is clear that progress in SN research would be glacial at best if we were limited to the study of galactic events. Although the fir...
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Chapter and Conference Paper
Extragalactic Supernova Remnants
Because the supernova remnants (SNRs) in other galaxies are at well-defined distances and because in many cases the reddening within extragalactic samples is more uniform than is the case for the Galactic SNR ...
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Chapter and Conference Paper
A Comment on the Seyfert Environment
The study on the Seyfert environment has been of considerable interest lately, since it is believed that the tidal force of a close companian may drive gas into the inner region and either fuel nuclear activit...
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Chapter and Conference Paper
The Two-Point Correlation Function of Groups in CFA Survey
The power law form of the two-point spatial correlation function of groups of galaxies is observed among a statistically homogeneous group sample based on the CfA redshift survey. The correlation range is from...
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Chapter and Conference Paper
Supernova Remnants and Candidates in M33
Supernova remnants (SNRs) provide fundamental information about stellar evolution and the properties of the interstellar medium. The galactic sample of optical SNRs is large, but severely limited by obscuratio...
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Chapter and Conference Paper
EUVE Observations of U Gem
We have observed U Gem during the peak and declining phases of a wide outburst in 1993 December with EUVE. At peak, U Gem was one of the brightest EUV sources in the sky. The spectrum of the source is complex. Fi...
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Chapter and Conference Paper
Far Ultraviolet Observations of Dwarf Novae made with the Hopkins Ultraviolet Telescope
Observations with the Hopkins Ultraviolet Telescope on the Astro-1 and Astro-2 space shuttle missions have provided the first set of moderate (3 Å) resolution far ultraviolet (FUV) spectra of dwarf novae to in...
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Chapter and Conference Paper
Spectrally Resolved Maps of Optically Thick Accretion Disks
We report first results of the HST/FOS time-resolved, low-resolution spectroscopy of the eclipsing cataclysmic variable UX UMa, including multi-wavelength map** of its accretion disk in the ultraviolet region.
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Chapter and Conference Paper
The EUVE Observations of Dwarf Novae
In the standard theory of dwarf novae in outburst, the boundary layer region between the inner edge of the accretion disk and the white dwarf surface radiates primarily in the extreme ultraviolet. Using EUVE, obs...
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Chapter and Conference Paper
Measuring the Galaxy Power Spectrum with Multiresolution Decomposition
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Chapter and Conference Paper
An Automatic Precise Registration Method Based on the Relative Geometric Calibration Between Bands for Satellite Multi-spectral Image
A registration method for satellite multi-spectral image is proposed, which is based on the relative geometric calibration between bands. This method precisely calibrate the relative geometric distortion of re...
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Chapter and Conference Paper
Overview of High-Precision Spectral Payload On-Orbit Radiometric Calibration
High-precision spectral payload during the track performance changes occur, and there for need to be calibrated by on-orbit radiation calibration technology. This paper describes several types of on-orbit radi...
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Chapter and Conference Paper
Micro-Vibration Environment Parameters Measurement and Analysis of a Novel Satellite in Orbit
The in-orbit remote sensing results of optical payloads on a novel kind of satellite are affected obviously by the micro-vibration environment in the satellite platform, and it is needed to suppress and compen...
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Chapter and Conference Paper
Design of Lobster-Eye Focusing System for Dark Matter Detection
Dark matter and dark energy are recognized as “Two dark clouds shrouded in the clear sky of physics in the twenty-first century.” Experimental and theoretical exploration of dark matter and dark energy will gr...
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Chapter and Conference Paper
Analysis of Straylight for the Green House Gas Instrument
The Green House Gas Instrument (GHGI) is an imaging spectrometer, which has four spectrum bands within 0.75 ~ 2.38 μm. This paper discussed the stray light performance of GHGI. Because the straylight requireme...
