The conditions for coherent scattering of starlight in the forward direction,and its consequences |
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| Institution: | 1. Institute of Pharmaceutics and Biopharmaceutics, Heinrich Heine University, Düsseldorf, Germany;2. Department of Pharmaceutical Technologies, Merck KGaA, Darmstadt, Germany;1. Institute of Nanophotonics, Jinan University, Guangzhou, 511443, China;2. State Key Lab of Crystal Materials, Shandong University, Jinan, 250100, China;1. Jiangsu Key Laboratory of Spectral Imaging and Intelligent Sense, Nanjing University of Science and Technology, Nanjing 210094, China;2. Xi’an Institute of Applied Optics, Xi’an 710065, China;1. Department of Chemical Engineering, McGill University, Montreal, Canada;2. Department of Biomedical Engineering, McGill University, Montreal, Canada;3. Laboratory of Endovascular Biomaterials (LBeV), Centre de recherche du CHUM, Montreal, Canada;4. Department of Pharmacology and Physiology, University of Montreal, Montreal, Canada;5. Department of Mechanical Engineering, École de technologie supérieure (ÉTS), Montreal, Canada;1. Department of Physics, Faculty of Science, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia;2. Department of Electrical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia;3. Department of Physics, Faculty of Science and Technology, Airlangga University, Surabaya, Indonesia |
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| Abstract: | I have been too conservative in ‘A review of the properties of the scattered starlight which contaminates the spectrum of reddened stars’ (NewA, 2002, 7, 191) concerning the conditions implied by an additional component of scattered light in the spectrum of reddened stars. I will review and simplify these conditions. Implications for the column density of the scatterers will then be discussed. Estimates for coherent Rayleigh scattering by hydrogen are in excellent agreement with the observations. |
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