Index:The Search for Extraterrestrial Intelligence, NASA, 1977.pdf
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TABLE OF CONTENTS Page Foreword vii Workshop Members vi Preface ix Philip Morrison, Chairman I. CONSENSUS 1 Introduction 3 The Impact of SETI 7 Conclusions 1. It is both timely and feasible to begin a serious search for extraterrestrial intelligence 11 2. A significant SETI program with substantial potential secondary benefits can be undertaken with only modest resources 17 3. Large systems of great capability can be built if needed 25 4. SETI is intrinsically an international endeavor in which the United States can take a lead 31 II. COLLOQUIES 37 1. Cosmic Evolution 39 Ichtiaque S. Rasool, Donald L. De Vincenzi, and John Billingham 2. Cultural Evolution 47 Mark A. Stull 3. Detection of Other Planetary Systems 53 Jesse L. Greenstein and David C. Black 4. The Rationale for a Preferred Frequency Band: The Water Hole 63 Bernard M. Oliver 5. Search Strategies 75 Charles L. Seeger 6. The Science of SETI 93 David C. Black and Mark A. Stull III. COMPLEMENTARY DOCUMENTS 1. Alternative Methods of Communication 103 John H. Wove 2. Notes on Search Space 111 Charles L. Seeger 3. Parametric Relations in a Whole Sky Search 127 Bernard M. Oliver 4. Stellar Census 143 Charles L. Seeger 5. Summary of Possible Uses of an Interstellar Search System for Radio Astronomy 147 Jeffrey N. Cuzzi and Samuel Gulkis 6. SETI Related Scientific and Technological Advances 173 David C Black and Mark A. Stull 7. A Preliminary Parametric Analysis of Search Systems 179 Roy Basler 8. Radio Frequency Interference 185 Mark A. Stull and Charles L. Seeger 9. Protection of a Preferred Radio Frequency Band 193 Mark A. Stull 10. Responses to a Questionnaire Sent to Leading Radio Observatories 199 Philip Morrison 11. The Soviet CETI Report 211 12. Searches to Date 229 13. The Maintenance of Archives 233 Charles L. Seeger 14. Selected Annotated Bibliography 237 15. Workshop Members. Biographical Information 243 Workshop Meetings 248 BRIEF TITLES FOR ILLUSTRATIONS Page Annotated Star Field iii View of Arecibo Observatory in Puerto Rico 1 Frequency scan of α-Ophiuchi xv The Orion Nebula 61 Arecibo search for ETI in M33 92 Antennas at NASA Mohave R & D site 141 Westerbork synthesis map of M51 172 Concept of 300-m space SETI system 184
Page SECTION II-4 Figure 1 – Free space microwave window 69 Figure 2 – Terrestrial microwave window 70 Figure 3 – Free space temperature bandwidth index 71 Figure 4 – Terrestrial temperature bandwidth index 72 SECTION II-5 Figure 1 – Some frequency allocations in the microwave window 79 Figure 2 – Major parameters of signal detection 89 SECTION III-2 Figure 1 – Pulsar signature 123 SECTION III-3 Figure 1 – Off-axis signal detection scheme 130 Figure 2 – System sensitivity relations 132 Figure 3 – Antenna size requirements 134 SECTION III-8 Figure 1 – Bi-static radar range for ISS receiver 189 Figure 2 – Peak side lobe levels of radiation patterns for large antennae 190 BRIEF TITLES FOR TABLES Page SECTION II-5 Table 1 – High power terrestrial radiations 81 SECTION III-1 Table 1 – Mass ratios for two-way trip to α-Centauri 106 SECTION ΙΙΙ-2 Table 1 – Typical antenna gains 114 Table 2 – Origin of system noise 115 Table 3 – Powerful radars 125 SECTION ΙΙΙ-3 Table 1 – System parameters 136 Table 2 – Detection sensitivity and cost 137 SECTION III-5 Chart 1 – Capabilities of large SETI systems 161 |
