A Search for Artificial Signals From the Small Magellanic Cloud
Abstract
We have used the Parkes radio telescope to observe three fields in the Small Magellanic Cloud encompassing > 10^7^ stars, looking for signals that could be ascribed to extraterrestrial intelligence. No narrow-band (<1 Hz) continuous or slowly-pulsed emissions greater than ~19 Jy were detected in the observed spectral band of 1.2-1.75 GHz. This limit corresponds to a transmitter power of ~5 x 10^5^ MW for a 100 m antenna at the distance of the SMC (EIRP of ~1.5 10^12^ MW).
- Publication:
-
The Astronomical Journal
- Pub Date:
- July 1996
- DOI:
- 10.1086/117996
- Bibcode:
- 1996AJ....112..164S
- Keywords:
-
- EXTRATERRESTRIAL INTELLIGENCE;
- MAGELLANIC CLOUDS