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Wow!

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Presentation Transcript

  1. Wow! • A potential alien signal • 1977

  2. Ohio State University • Radio Telescope, transit instrument • (Design similar to Nancay Radio Telescope) Big Ear

  3. Location on Sky • Sweeps across any given part of the sky in 72 sec

  4. 21 cm Hydrogen line

  5. What does the signal mean?

  6. Many follow-ups, including: • Oak Ridge Observatory, 1987, 1989 • 12m NRAO West Bank, 1995 • VLA, 1995, 1996 • Mt. Pleasant Radio Obsy, 1999

  7. Conclusion • No clue! • Could be • Alien • Military • Noise (low chance but not impossible) • Probably not… • Accidental human (21cm banned) • Natural astronomical (narrow band) • 2012 Aricebo beamed 10,000 Tweets to that direction of sky

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