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Seminar: Berdyugina

October 13, 2014 @ 3:00 pm - 4:00 pm

Speaker: Svetlana Berdyugina,
Institute for Astronomy & Kiepenheuer Institut für Sonnenphysik

Title: Global Warming as a Marker of Earth-like Extrasolar Civilizations

Abstract:
Earth-like civilizations generate heat from the energy that they utilize.
The thermal radiation from this heat can be a thermodynamic marker for
civilizations. Here we model such planetary radiation on Earth-like
planets and propose a strategy for detecting such an alien unintentional
thermodynamic electromagnetic biomarker. We show that astronomical
infrared civilization biomarkers may be detected within an interestingly
large cosmic volume using a 70m-class or larger telescope. In particular,
the Colossus telescope with achievable coronagraphic and adaptive optics
performance, may reveal Earth-like civilizations from visible and IR
photometry timeseries’ taken during an exoplanetary orbit period. The
detection of an alien heat signature will have far-ranging implications,
but even a null result, given 70m aperture sensitivity, could also have
broad social implications.


Tea, coffee, and cookies will be available at 2:45pm.
Please bring your own mug.

For remote participation
URL: http://connect.arc.nasa.gov/uhnai_seminar/
Polycom: 128.171.226.130##2701

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Details

Date:
October 13, 2014
Time:
3:00 pm - 4:00 pm
Event Categories:
,

Venue

Physical Science Building 211
University of Hawaii at Manoa, Honolulu, HI 96822 United States