A Search for Evidence of Advanced Extraterrestrial Life on Kepler Planets
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A Search for Evidence of Advanced Extraterrestrial Life on Kepler Planets. Matt Lebofsky Arielle Little Ron Maddalena Geoff Marcy Jill Tarter Dan Werthimer. Jeff Cobb Paul Demorest John Ford Andrew Howard Eric Korpela Glen Langston. Andrew Siemion, University of California, Berkeley.

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A search for evidence of advanced extraterrestrial life on kepler planets

A Search for Evidence of Advanced Extraterrestrial Life on Kepler Planets

Matt Lebofsky

Arielle Little

Ron Maddalena

Geoff Marcy

Jill Tarter

Dan Werthimer

Jeff Cobb

Paul Demorest

John Ford

Andrew Howard

Eric Korpela

Glen Langston

Andrew Siemion, University of California, Berkeley



A search for evidence of advanced extraterrestrial life on kepler planets

Narrowband Radio Signals Kepler Planets


A search for evidence of advanced extraterrestrial life on kepler planets

Broadband Radio Pulses Kepler Planets

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A search for evidence of advanced extraterrestrial life on kepler planets

Observing Plan Kepler Planets


A search for evidence of advanced extraterrestrial life on kepler planets

Observing Plan Kepler Planets

5 minute targeted observation of especially interesting KOIs:


A search for evidence of advanced extraterrestrial life on kepler planets

Observing Plan Kepler Planets

5 minute targeted observation of especially interesting KOIs:

‘Traditional’ HZ:

-50 C < Teq< 100 C


A search for evidence of advanced extraterrestrial life on kepler planets

Observing Plan Kepler Planets

5 minute targeted observation of especially interesting KOIs:

‘Traditional’ HZ:

-50 C < Teq< 100 C

Ncandidates > 4


A search for evidence of advanced extraterrestrial life on kepler planets

Observing Plan Kepler Planets

5 minute targeted observation of especially interesting KOIs:

‘Traditional’ HZ:

-50 C < Teq< 100 C

Ncandidates > 4

Small, long period

P > 50d && Rp < 3 RE


A search for evidence of advanced extraterrestrial life on kepler planets

Observing Plan Kepler Planets

11 hour raster scan of the entire Kepler field.

5 seconds

per 10’ beam


A search for evidence of advanced extraterrestrial life on kepler planets

Radio SETI Kepler Planets


A search for evidence of advanced extraterrestrial life on kepler planets

H Kepler Planets2O

O2

Galactic Synchrotron

Background

Ionospheric Reflection


A search for evidence of advanced extraterrestrial life on kepler planets

18 cm Kepler Planets

hyperfine OH

21 cm

hyperfine H

“Water Hole”


A search for evidence of advanced extraterrestrial life on kepler planets

Kepler SETI Band Kepler Planets

16 to 27 cm

1.1 to 1.9 GHz



A search for evidence of advanced extraterrestrial life on kepler planets

Single Dish Radio Astronomy Kepler Planets

Incoming Radiation

Processing

Analog / Digital Conversion

Prime Focus

Receiver /

Amplifier

Receiver



A search for evidence of advanced extraterrestrial life on kepler planets

Green Bank Ultimate Pulsar Machine (GUPPI) Kepler Planets

8 bit sampling ➡ 2 bit quantization

Raw ‘baseband’ recording

800 MHz bandwidth, 2 polarizations

~ 1 gigabyte/second to disk


A search for evidence of advanced extraterrestrial life on kepler planets

Narrowband Signals Kepler Planets

Fast Fourier Transform

Dynamic Spectrum

FREQUENCY

TIME


A search for evidence of advanced extraterrestrial life on kepler planets

Narrowband Signals Kepler Planets

POWER

FREQUENCY


A search for evidence of advanced extraterrestrial life on kepler planets

Broadband Pulses Kepler Planets

FREQUENCY (MHz)

Assuming a model of free electron density in the ISM, we can infer a distance of ~2000 pc.

TIME (mS)


A search for evidence of advanced extraterrestrial life on kepler planets

Broadband Pulses Kepler Planets

Dedispersion

FREQUENCY (MHz)

Thresholding


A search for evidence of advanced extraterrestrial life on kepler planets

What could we detect? Kepler Planets


A search for evidence of advanced extraterrestrial life on kepler planets

What could we detect? Kepler Planets

Broadband Pulses

Narrowband Signals


A search for evidence of advanced extraterrestrial life on kepler planets

What could we detect? Kepler Planets

Broadband Pulses

Narrowband Signals


A search for evidence of advanced extraterrestrial life on kepler planets

What could we detect? Kepler Planets

at 10σ:

Broadband Pulses

~1 ly

Narrowband Signals


A search for evidence of advanced extraterrestrial life on kepler planets

What could we detect? Kepler Planets

at 10σ:

Broadband Pulses

~1 ly

Narrowband Signals

~1650 ly


A search for evidence of advanced extraterrestrial life on kepler planets

What could we detect? Kepler Planets

at 10σ:

Broadband Pulses

~1 ly

Narrowband Signals

~1650 ly

SEFD = 10 Jy tintegration=150s tpulse=10s


A search for evidence of advanced extraterrestrial life on kepler planets

Status Kepler Planets


A search for evidence of advanced extraterrestrial life on kepler planets

Status Kepler Planets

Observations completed May 22, 2011

Total Data set ~50 TB


A search for evidence of advanced extraterrestrial life on kepler planets

Status Kepler Planets

Total Data set ~50 TB


A search for evidence of advanced extraterrestrial life on kepler planets

SETI@Home Kepler Planets

Status

Total Data set ~50 TB

AstroPulse


A search for evidence of advanced extraterrestrial life on kepler planets

SETI@Home Kepler Planets

Status

Questions?

Total Data set ~50 TB

AstroPulse