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Lightning and Radio Emission Detector (LRD)

NSSDC ID: 1989-084E-06
Mission Name: Galileo Probe
Principal Investigator: Dr. Louis J. Lanzerotti

Description

The objectives of this investigation are to: (1) verify the existence of lightning on Jupiter and measure its basic physical characteristics and (2) measure radio frequency noise levels and one magnetic field component near Jupiter. Two instruments are used for this investigation: an electromagnetic sensor and an optical sensor. The electromagnetic sensor has a ferrite-core antenna with a preamplifier as an radio frequency sensor. The frequency domain is 3, 15, and 100 kHz narrow-band. The time domain is 1 Hz to 100 kHz, and the resolution is 16 s. The optical sensor has a photodiode with a fisheye lens. There is coincidence and anticoincidence between the radio frequency and optical sensors. The electromagnetic sensor is mounted under the Probe afterbody, while the optical sensor is mounted on the Probe envelope, looking out perpendicularly to the Probe spin axis. The total mass is 1.1 kg and the total continuous power is 1.0 W.

Facts in Brief

Mass: 2.5 kg
Power (avg): 3.0 W
Bit rate (avg): 0.0080 bps

Funding Agency

  • NASA-Office of Space Science (United States)

Discipline

  • Planetary Science: Atmospheres

Additional Information

Questions or comments about this experiment can be directed to: Dr. Edwin V. Bell, II.

 

Personnel

Name Role Original Affiliation E-mail
Dr. Louis J. Lanzerotti General Contact AT&T Bell Laboratories ljl@bell-labs.com
Dr. G. Dehmel Co-Investigator Technische Universitat Braunschweig  
Mr. John D. Mihalov Co-Investigator NASA Ames Research Center mihalov@windee.arc.nasa.gov
Dr. Klaus Rinnert Co-Investigator Max-Planck-Institut fur Aeronomie  
Dr. Fritz O. Gliem Co-Investigator Technische Universitat Braunschweig  
Dr. E. Philip Krider Co-Investigator University of Arizona krider@air.atmo.arizona.edu
Dr. Martin A. Uman Co-Investigator University of Florida jcoro@ece.ufl.edu
Dr. G. Schmidke Co-Investigator Universitat Kiel  

Selected References

Lanzerotti, L. J., et al., The lightning and radio emission detector (LRD) instrument, Space Sci. Rev., 60, No. 1/4, 91-109, May 1992.

Lanzerotti, L. J., et al., Radio frequency signals in Jupiter's atmosphere, Science, 272, No. 5263, 858-860, May 1996.

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