This book discusses various fields of Far UV spectroscopy, ranging from a catalog of stellar spectra to detailed modeling and measurements of the interplanetary background. It presents various types of data sets and different techniques for calibration.
This book is the result of a working group sponsored by ISSI in Bern, which was initially created to study possible ways to calibrate a Far Ultraviolet (FUV) instrument after launch. In most cases, ultraviolet instruments are well calibrated on the ground, but unfortunately, optics and detectors in the FUV are very sensitive to contaminants and it is very challenging to prevent contamination before and during the test and launch sequences of a space mission. Therefore, ground calibrations need to be confirmed after launch and it is necessary to keep track of the temporal evolution of the sensitivity of the instrument during the mission.
The studies presented here cover various fields of FUV spectroscopy, including a catalog of stellar spectra, datasets of Moon Irradiance, observations of comets and measurements of the interplanetary background. Detailed modelling of the interplanetary background is presented as well. This work also includes comparisons of older datasets with current ones. This raises the question of the consistency of the existing datasets. Previous experiments have been calibrated independently and comparison of the datasets may lead to inconsistencies. The authors have tried to check that possibility in the datasets and when relevant suggest a correction factor for the corresponding data.
| Foreword |
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v | |
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1 | (4) |
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PART I Interstellar Hydrogen and the Sun |
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5 | (134) |
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2 Distribution of Interstellar Hydrogen Atoms in the Heliosphere and Backscattered Solar Lyman-α |
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7 | (60) |
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3 Solar Parameters for Modeling the Interplanetary Background |
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67 | (72) |
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PART II Interplanetary Hydrogen |
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139 | (50) |
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4 Thirty Years of Interplanetary Background Data: A Global View |
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141 | (22) |
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5 Lyman-α Models for LRO LAMP from MESSENGER MASCS and SOHO SWAN Data |
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163 | (14) |
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6 New Horizons Cruise Observations of Lyman-α Emissions from the Interplanetary Medium |
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177 | (12) |
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PART III Instrument Cross-Calibration |
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189 | (80) |
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7 A New Catalog of Ultraviolet Stellar Spectra for Calibration |
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191 | (36) |
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8 Absolute Ultraviolet Irradiance of the Moon from the LASP Lunar Albedo Measurement and Analysis from SOLSTICE (LLAMAS) Project |
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227 | (28) |
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9 Lyman-α Observations of Comet Holmes from SORCE SOLSTICE and SOHO SWAN |
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255 | (14) |
| Index |
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269 | |
Eric Quémerais obtained his doctorate in Astronomy and Space Physics from Université Paris 6 in 1993. In 1994, he was a postdoctoral research associate at Lunar and Planetary Laboratory, University of Arizona, Tucson. In 1995, he obtained a position of Chargé de Recherche at CNRS, France and was promoted to Directeur de Recherche in 2010. He has been working on various UV instruments, including the SWAN Lyman alpha photometer on the ESA/NASA SOHO mission, the SPICAM-UV spectrometer on ESAs Mars-Express mission and SPICAV-UV on ESAs Venus-Express mission. Since 2009, he is the Principal Investigator of the PHEBUS instrument, a UV spectrometer that will fly on the European spacecraft of the ESA/JAXA Bepi-Colombo mission.
Martin Snow obtained his doctorate in Astrophysical, Planetary, and Atmospheric Science from the University of Colorado in 1995. From 1996 to 1998 he was a post-doctoral researcher at the Laboratory for Atmospheric and Space Physics (LASP) at the University of Colorado working on the interaction of comet plasma tails and the solar wind. He then became a Research Scientist at LASP and is currently in the position of Research Scientist III. He is the instrument scientist for SORCE SOLSTICE and the GOES-R EXIS EUVS-C. His research interests include solar variability in the ultraviolet, lunar reflectance, and long-term monitoring of the solar spectral irradiance.
Roger-Maurice Bonnet is a solar physicist and the Executive Director of the International Space Science Institute in Bern, Switzerland. He is the former director of the Scientific Program of the European Space Agency and former president of COSPAR. He is responsible for all Space Science Series books at ISSI edited by Springer since 2003, and the co-author of Surviving 1,000 Centuries Can we do it? published by Springer.
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