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Monday, May 18, 2020 | History

2 edition of A determination of the source of Jovian hectometric radiation via occultation by Ganymede found in the catalog.

A determination of the source of Jovian hectometric radiation via occultation by Ganymede

A determination of the source of Jovian hectometric radiation via occultation by Ganymede

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Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va .
Written in English

    Subjects:
  • Galileo spacecraft.,
  • Flyby missions.,
  • Radio emission.,
  • Radio frequencies.,
  • Ganymede.,
  • Magnetic flux.,
  • Magnetic fields.,
  • Frequency ranges.

  • Edition Notes

    StatementW.S. Kurth ... [et al.].
    Series[NASA contractor report] -- NASA-CR-205100.
    ContributionsKurth, W. S., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15502302M

    A meta description is an HTML tag in the HTML code of your website, which allows you to customize a section of text that describes the page itself. It plays a role in how your page is seen by search engine crawlers, and how it appears in SERPs. Short-wave radiation, in the wavelength range from to 3 μm, comes directly from the includes both beam and diffuse components. Long-wave radiation, with wavelength 3 μm or longer, originates from the sources at near-ambient temperatures - atmosphere, earth surface, light collectors, other bodies.. The solar radiation reaching the earth is highly variable and depends on the state.

    The final density of states describe the available states for the radiation. As we assumed that the radiation is represented by plane waves (and assuming for convenience they are contained in a cavity of edge L), the final density of states is (L) 3 ρ(k f)d 3. k. f = k. f 2. dk. f. dΩ 2π. The dipole magnetic field created by this permanent moment has a strength of ± 2 nT at Ganymede's equator, which should be compared with the Jovian magnetic field at the distance of Ganymede—about ered by: Galileo Galilei.

    Juno Papers (all) Juno Journal Articles (as known by date at bottom of page). (Primary source is Steve L’s papers spreadsheet, then any Rob W randomly spots.) These DOIs were not found in NASA ADS (yet), so are excluded from the following section: – Bagenal et al. (), The Space Environment of Io and Europa, doi: /ja   Radiation dose is the amount of radiation absorbed by the body. If we know the ambient radiation level, we easily can calculate our radiation dose. Imagine the ambient radiation levels coming from this jar where this person is standing are Sv/h. If this person stands in the same place for one hour, he will receive a dose of Sieverts.


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A determination of the source of Jovian hectometric radiation via occultation by Ganymede Download PDF EPUB FB2

During the first Galileo flyby of Ganymede, Jovian radio emissions in the frequency range of kHz to MHz were completely occulted by the satellite. We take advantage of this serendipitous ob Cited by: These results are consistent with a source located along either the Ganymede or Europa flux tube.

During the first Galileo flyby of Ganymede, Jovian radio emissions in the frequency range of kHz to MHz were completely occulted by the satellite.

A determination of the source of Jovian hectometric radiation via occultation by Ganymede W. Kurth, 1 S. Bolton, 2 D. Gurnett, 1 and S. Levin 2 Abstract. During the first Galileo flyby of Ganymede, Jovian radio emissions in the frequency range of kHz to MHz were completely occulted by the by: The satellite Ganymede sometimes occults the sources of the Jovian decameter radiation (DAM) associated with Io magnetic field line.

A determination of the source of Jovian hectometric radiation via occultation by Ganymede. [W S Kurth; United States. National Aeronautics and Space Administration.;].

The evidence suggests that the apparent source is along an L greater than or approximately equal to 7 magnetic field line near the central meridian longitude (approximately deg) of the spacecraft and at 1 to 3 Jovian radii above the northern hemisphere of Jupiter.

By continuing to browse this site you agree to us using cookies as described in About Cookies. Remove maintenance message. Open navigation Open search. Skip to main content; Log in / Register. A Determination of the Source of Jovian Hectometric Radiation via Occultation by Ganymede.

of Jupiter has been found in the spectrum of Jovian hectometric radiation using data from the Galileo. wave direction with ray tracing in a model Jovian magneto-sphere.

The model magnetosphere combines the densities [Di-vine and Garrett, ] with the 06 magnetic field model [Con-nerney, ]. The location of the radio source is determined by tracing the rays from the spacecraft back along the direction of the incident radiation to the RX cutoff.

The main method that ensures a high spatial resolution is the method of point projection X-ray radiography, i.e., radiography from a point and bright radiation source.

For projection radiography, the small size of the source is the most important characteristic of the source, which mainly determines the spatial resolution of the by: Jovian hectometric radiation(HOM) emitted from the polar region of the Jovian magnetsphere reflects the information on the electro-magnetic environment of the source region.

Using the Ulysses URAP and SWOOPS data, the occurrence characteristics of HOM and its Cited by: 4. Jovian hectometric radiation(HOM) emitted from the polar region of the Jovian magnetsphere reflects the information on the electro-magnetic environment of the source region.

Using the Ulysses URAP and SWOOPS data, the occurrence characteristics of HOM and its. Using Juno plasma and wave and magnetic observations (JADE and Waves and MAG instruments), the generation mechanism of the Jovian hectometric radio emission is analyzed.

It is shown that suitable conditions for the cyclotron maser instability (CMI) are observed in the regions of the radio by: The jovian hectometric radio emission (HOM) is part of the radio spectrum of Jupiter which contains several other components including the decameter wave radiation (DAM) well known from ground-based observations and two kilometer wave components, a narrow-band emission (nKOM) and a broad-band emission (bKOM).Cited by: 4.

Abstract Direct confirmation that low-frequency Jovian hectometric (HOM) radio emissions centered near 0 deg central meridian longitude consist of distinct, oppositely polarized northern and southern beams has been achieved using data from the Unified Radio and Plasma Wave (URAP) experiment on the Ulysses spacecraft during the Ulysses-Jupiter encounter in early February Radiation Measurements provides a forum for the presentation of the latest developments in the broad field of ionizing radiation detection and measurement.

The journal publishes original papers on both fundamental and applied research. The journal seeks to publish papers that present advances in the following areas: spontaneous and stimulated luminescence (including scintillating materials.

A Determination of the Source of Jovian Hectometric Radiation via Occultation by Ganymede. 05/ by Kurth During the first Galileo flyby of Ganymede, Jovian radio emissions in the frequency range of kHz to MHz were completely occulted by the satellite. The determination of coronal magnetic fields from.

In JulyNASA’s Juno mission becomes the first spacecraft to enter polar orbit of Jupiter and venture deep into unexplored polar territories of the magnetosphere. Focusing on these polar regions, we review current understanding of the structure and dynamics of the magnetosphere and summarize the outstanding issues.

The Juno mission profile involves (a) a several-week approach Cited by: instruments), the generation mechanism of the Jovian hectometric radio emission is analyzed.

It is shown that suitable conditions for the cyclotron maser instability (CMI) are observed in the regions of the radio sources. Pronounced loss cone in the electron distributions are likely the source of. Measurement of radiation •Description of radiation beam •Calculation of the absorbed dose –Bragg-Grey cavity theory –Practical ion chambers –Determination of absorbed dose for energies above 3 MeV –Dosimetry of radio-nuclides Description of radiation beam •Fluence da •Energy fluence •Fluence rate dt d dN hv da dN).

Effectiveness of robust optimization in volumetric modulated arc therapy using 6 and 10 MV flattening filter-free beam therapy planning for lung stereotactic body radiation .Physics and Imaging in Radiation Oncology is an international, open access journal which is focused on medical physics and imaging in radiation oncology.

Submissions from areas related to physics and imaging in radiation oncology are also considered. The journal publishes original research articles, review articles, short communications, technical notes, case series and reports, and.Incidence Reflection in Creating the Rotationally Modulated Lanes in the Jovian Hectometric Radio Emission Spectrum, Radio Sci., 34,July/August