A Search for Evidence of Advanced Extraterrestrial Life on Kepler Planets
This presentation is the property of its rightful owner.
Sponsored Links
1 / 35

A Search for Evidence of Advanced Extraterrestrial Life on Kepler Planets PowerPoint PPT Presentation


  • 43 Views
  • Uploaded on
  • Presentation posted in: General

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.

Download Presentation

A Search for Evidence of Advanced Extraterrestrial Life on Kepler Planets

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


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

Graphic: Wendy Stenzel / NASA


A search for evidence of advanced extraterrestrial life on kepler planets

Narrowband Radio Signals


A search for evidence of advanced extraterrestrial life on kepler planets

Broadband Radio Pulses

e

p

e

e

p

p

e

p

p

e

e

p

e

e

p

p

p

e


A search for evidence of advanced extraterrestrial life on kepler planets

Observing Plan


A search for evidence of advanced extraterrestrial life on kepler planets

Observing Plan

5 minute targeted observation of especially interesting KOIs:


A search for evidence of advanced extraterrestrial life on kepler planets

Observing Plan

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

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

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

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


A search for evidence of advanced extraterrestrial life on kepler planets

H2O

O2

Galactic Synchrotron

Background

Ionospheric Reflection


A search for evidence of advanced extraterrestrial life on kepler planets

18 cm

hyperfine OH

21 cm

hyperfine H

“Water Hole”


A search for evidence of advanced extraterrestrial life on kepler planets

Kepler SETI Band

16 to 27 cm

1.1 to 1.9 GHz


A search for evidence of advanced extraterrestrial life on kepler planets

Green Bank, West Virginia


A search for evidence of advanced extraterrestrial life on kepler planets

Single Dish Radio Astronomy

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)


A search for evidence of advanced extraterrestrial life on kepler planets

Green Bank Ultimate Pulsar Machine (GUPPI)

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

Fast Fourier Transform

Dynamic Spectrum

FREQUENCY

TIME


A search for evidence of advanced extraterrestrial life on kepler planets

Narrowband Signals

POWER

FREQUENCY


A search for evidence of advanced extraterrestrial life on kepler planets

Broadband Pulses

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

Dedispersion

FREQUENCY (MHz)

Thresholding


A search for evidence of advanced extraterrestrial life on kepler planets

What could we detect?


A search for evidence of advanced extraterrestrial life on kepler planets

What could we detect?

Broadband Pulses

Narrowband Signals


A search for evidence of advanced extraterrestrial life on kepler planets

What could we detect?

Broadband Pulses

Narrowband Signals


A search for evidence of advanced extraterrestrial life on kepler planets

What could we detect?

at 10σ:

Broadband Pulses

~1 ly

Narrowband Signals


A search for evidence of advanced extraterrestrial life on kepler planets

What could we detect?

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?

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


A search for evidence of advanced extraterrestrial life on kepler planets

Status

Observations completed May 22, 2011

Total Data set ~50 TB


A search for evidence of advanced extraterrestrial life on kepler planets

Status

Total Data set ~50 TB


A search for evidence of advanced extraterrestrial life on kepler planets

[email protected]

Status

Total Data set ~50 TB

AstroPulse


A search for evidence of advanced extraterrestrial life on kepler planets

[email protected]

Status

Questions?

Total Data set ~50 TB

AstroPulse


  • Login