Real sound of Saturn
Δημοσιεύτηκε στις 12 Απρ 2014
Saturn
is a source of intense radio emissions. The radio waves are closely
related to the auroras near the poles of the planet. These auroras are
similar to Earth's northern and southern lights. The Cassini spacecraft
began detecting these radio emissions in April 2002 when Cassini was 2.5
astronomical units from the planet using the Cassini Radio and Plasma
Wave Science (RPWS) instrument. The RPWS has now provided the first high
resolution observations of these emissions that show an amazing array
of variations in frequency and time. The complex radio spectrum with
rising and falling tones is very similar to Earth's auroral radio
emissions. These structures indicate that there are numerous small radio
sources moving along magnetic field lines threading the auroral region.
Time
on this recording has been compressed such that 73 seconds corresponds
to 27 minutes, or, the recording is at 22x real time. Since the
frequencies of these emissions are well above the audio frequency range,
we have shifted them downward by a factor of 44.
View more from: http://www.youtube.com/user/VoyagerPWS
http://space-audio.org/
is a source of intense radio emissions. The radio waves are closely
related to the auroras near the poles of the planet. These auroras are
similar to Earth's northern and southern lights. The Cassini spacecraft
began detecting these radio emissions in April 2002 when Cassini was 2.5
astronomical units from the planet using the Cassini Radio and Plasma
Wave Science (RPWS) instrument. The RPWS has now provided the first high
resolution observations of these emissions that show an amazing array
of variations in frequency and time. The complex radio spectrum with
rising and falling tones is very similar to Earth's auroral radio
emissions. These structures indicate that there are numerous small radio
sources moving along magnetic field lines threading the auroral region.
Time
on this recording has been compressed such that 73 seconds corresponds
to 27 minutes, or, the recording is at 22x real time. Since the
frequencies of these emissions are well above the audio frequency range,
we have shifted them downward by a factor of 44.
View more from: http://www.youtube.com/user/VoyagerPWS
http://space-audio.org/
Κατηγορία
Άδεια
- Τυπική άδεια YouTube
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