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Narrowband-imaging the far-ultraviolet background.

机译:窄带成像远紫外背景。

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摘要

This thesis presents preliminary maps and results obtained during the first sounding rocket flight of an experiment designed to perform narrowband imaging of line and continuum components of the diffuse far-ultraviolet background. The instrument is capable of measuring C IV emission (155 nm), {dollar}rm Hsb2{dollar} fluorescence {dollar}({lcub}sim{rcub}160{dollar} nm) and far-UV continuum (140-180 nm) over large portions of the sky with good sensitivity on degree scales. The experiment consists of four co-aligned, wide-field {dollar}(30spcirc times 20spcirc ){dollar} self-filtering telescopes with 7-10 nm bandpasses centered on 145, 155, 161, and 176 nm. The three-mirror telescope design and microchannel-plate detector with two- dimensional readout provide {dollar}{lcub}sim{rcub}5spprime{dollar} imaging for point-source subtraction. The instrument was launched on the night of July, 14 1996 from White Sands Missile Range, New Mexico. It scanned over 10,000 {dollar}rm degsp2 (pi{dollar} sr) during its 300 second flight.; Among the first results is a map of global C IV emission from the Cygnus loop supernova remnant. Partial skymaps for each waveband and preliminary data concerning the components of the Galactic and extragalactic far-UV background are presented and discussed in relation to the nature of the hot, warm and cold phases of the interstellar medium and the star formation history of the universe.
机译:本论文介绍了初步的图谱和在第一次探空火箭飞行期间获得的结果,该实验旨在对弥散的远紫外线背景的线和连续分量进行窄带成像。该仪器能够测量C IV发射(155 nm),{rm} rm Hsb2 {dol}荧光{dol}({lcub} sim {rcub} 160 {dollar} nm)和远紫外连续光谱(140-180 nm) )在天空的大部分区域上,并具有良好的度标灵敏度。该实验由四个共对准的宽视场{dollar}(30spcirc乘以20spcirc){dollar}自滤式望远镜组成,它们的中心通过分别为145、155、161和176 nm的7-10 nm带通。具有二维读数的三镜望远镜设计和微通道板探测器可提供{dollar} {lcub} sim {rcub} 5spprime {dollar}成像,用于点源减法。该仪器于1996年7月14日晚上从新墨西哥州的白沙导弹靶场发射升空。在其300秒的飞行中,它扫描了10,000 {rm} rm degsp2(pi {dollar} sr)。最早的结果之一是天鹅座环超新星残余物的全球C IV排放图。提出并讨论了每个波段的部分天空图以及有关银河系和银河系远紫外线背景成分的初步数据,这些数据涉及星际介质的热,暖和冷相的性质以及宇宙的恒星形成历史。

著录项

  • 作者

    Schiminovich, David.;

  • 作者单位

    Columbia University.;

  • 授予单位 Columbia University.;
  • 学科 Physics Astronomy and Astrophysics.
  • 学位 Ph.D.
  • 年度 1998
  • 页码 252 p.
  • 总页数 252
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 天文学;
  • 关键词

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