Radio observations of Jupiter.

Franklin, K. L.; Burke, B. F.

doi:10.1086/107310

Cited by 23 publications

(6 citation statements)

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“…This result agrees with that of Franklin and Burke (1956) from observations at Washington. If the sense of rotation is indeed the same when observed in Doth the northern and southern hemispheres (and obviously more observations -are required), the terrestrial ionosphere cannot be the medium which impresses ,circular polarization on the Jupiter radiation.…”

Section: (E) Polarizationsupporting

confidence: 92%

Further Observations of Radio Emission from the Planet Jupiter

Gardner¹,

Shain²

1958

Aust. J. Phys.

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SummaryThe results of further observation of Jupiter radiation, made near Sydney from June 1955 to March 1956, are presented. Most work was done at 19·6 Mc/s, but some observations were also made at 14 and 27 Mc/s.The characteristics of the 19·6 Mc/s radiation received from Jupiter are described in detail. The new facts disclosed by these observations are: (i) Jupiter radiation appeared to be random noise varying rapidly in intensity-large changes in intensity took place in times as short as 0·2 sec, but no shorter; (ii) some spaced-receiver observations indicated that the terrestrial ionosphere can have a pronounced effect on the short-term characteristics of the radiation; (iii) a single observation showed that on that occasion the radiation was circularly polarized (right-handed in radio sense).There appeared to be three sources of noise on Jupiter. None of these could be identified with visual features. The radiation emitted from the main source was confined to angles within 45 0 of a central line.The additional observations at 14 and 27 Mc/s showed that the peak intensity, mean duration, and frequency of occurrence were all greatest at 19·6 Mc/s. Two of the radio sources were active at 19·6 Mc/s but not at 27 Mc/s. The angular spread of the radiation from the principal source was considerably narrower at 27 Mc/s than at 19·6 Mc/s.The great variability and spectral concentration of the Jupiter radiation, both resembling solar noise, suggest an .origin in some form of plasma oscillation in an ionized region with a critical frequency around 20 Mc/s.

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Section: (E) Polarizationsupporting

confidence: 92%

Further Observations of Radio Emission from the Planet Jupiter

Gardner¹,

Shain²

1958

Aust. J. Phys.

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“…Отсюда следует, что угол ф, на который поворачивается Юпитер за время, в течение которого наблюдается интенсивное излучение, составляет 35ч-70°. Эти данные подтверждаются более поздними измерениями, согласно которым ψ^50° 152 . Малая длительность радиоизлучающей фазы Юпитера может быть обуслов-лена или направленным характером радиоизлучения, или резкой зави-симостью радиоизлучающей способности локального источника на Юпитере от степени его освещенности солнечными лучами 15 **).…”

Section: в в железняковunclassified

“…Напротив, Берк и Франклин, опираясь на результаты наблюдений 1955-1956 гг. 152 , считают, что всплески радиоизлучения, возможно, исходят из области, занимаемой большим красным пятном.…”

Section: в в железняковunclassified

Радиоизлучение Солнца И Планет

Железняков¹

1958

Usp. Fiz. Nauk

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“…Even early explanations for Earth's magnetic field linked it to Earth's interior structure. After the discovery of Jupiter's radio emission [2,9], it was determined that this radiation is due to Jupiter's magnetic field [3], which was then tied to the planet's interior structure. Remote sensing and in situ measurements have since shown that the Earth, Mercury, Ganymede, and the giant planets of the solar system all contain internal dynamos that generate planetary-scale fields; Mars and the Moon show residual magnetism indicative of past dynamos.…”

Section: Introductionmentioning

confidence: 99%

Exoplanets and Radio Astronomy Beyond Earth

Lazio

2021

2021 XXXIVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)

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Jupiter's radio emission has been linked to its planetaryscale magnetic field, and spacecraft investigations have revealed that most planets, and some moons, have or had a global magnetic field. Generated by internal dynamos, magnetic fields are one of the few remote sensing means of constraining the properties of planetary interiors. For the Earth, its magnetic field has been speculated to be partially responsible for its habitability, and knowledge of an extrasolar planet's magnetic field may be necessary to assess its habitability. The radio emission from Jupiter and other solar system planets is produced by an electron cyclotron maser, and detections of extrasolar planetary electron cyclotron masers will enable measurements of extrasolar planetary magnetic fields. Key advances would include the ground-based detection of the radio emission from Jovian-mass planets and laying the technological foundations for space-based detections of the radio emissions from lower-mass planets.

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Radio observations of Jupiter.

Cited by 23 publications

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Further Observations of Radio Emission from the Planet Jupiter

Further Observations of Radio Emission from the Planet Jupiter

Радиоизлучение Солнца И Планет

Exoplanets and Radio Astronomy Beyond Earth

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