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Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Vector_magnetograph> ?p ?o }

• Vector_magnetograph abstract "A vector magnetograph is a type of imaging telescope that can estimate the 3-D vector of the magnetic field on a distant body with a resolved line spectrum. Magnetographs are useful for studying the Sun because the surface magnetic field is important to the creation and maintenance of the solar corona, and gives rise to the phenomena of solar flares and space weather.Vector magnetographs measure the longitudinal (line-of-sight) component of the magnetic field separately from the transverse (image-plane) components, using different aspects of the Zeeman splitting that affects the wavelength of emission and/or absorption spectral lines in the presence of a magnetic field. The Zeeman splitting is caused by the fact that individual atoms are magnetized due to the circulating motion of electrons bound to them. Emission or absorption of a photon changes the magnetic moment of the atom. In a magnetic field, photons emitted with different polarizations gain or lose energy depending on their orientation relative to the surrounding magnetic field, changing the characteristics of the spectral line—some polarization components are blue-shifted or red-shifted relative to the line's reference wavelength, by a factor proportional to the field intensity.Specifically, the circular-polarized component of the light is shifted in wavelength proportional to the field strength in the direction of the observer, and the wavelength shift of the vertical and horizontal linearly-polarized components measures the field strength in those directions.A vector magnetograph works in a very narrow waveband around a single spectral line, for example the 525.02 nm 'Fe I' line from neutral (non-ionized) iron. The measured shifts in wavelength are fractions of a picometre. Measuring the full spectral profile of the line with this precision requires a high-dispersion spectrograph and a long time to collect sufficient photons to make the measurement with precision. For example, SOLIS requires about an hour to gather polarized spectral profiles over the whole Sun, and Hinode, the recently launched spacecraft with a 0.5-meter solar telescope on board, takes about an hour to cover a 164-arcsecond-square field (1% of the Sun) at very high spatial resolution. Other types of magnetograph use narrowband filter imaging to produce a measurement of the first few moments of the spectral line, and operate much more quickly: the HMI instrument on board the Solar Dynamics Observatory will produce a vector magnetogram every few minutes.The splitting effect is antisymmetric along the line-of-sight, but symmetric transverse to the line of sight, so the transverse component of the field can only be measured up to a factor of -1: there is a 180° ambiguity in vector magnetograph measurements of portion of the magnetic field that is perpendicular to the line of sight of the instrument.Notable existing vector magnetographs include the IVM at the Mees Observatory in Hawaii, SVM at Udaipur Solar Observatory, India, the SOLIS instrument at the National Solar Observatory (strictly speaking, SOLIS is a scanned spectropolarimeter), and the narrowband filtergraph instrument on the Hinode spacecraft. Planned instruments include a vector polarimeter at the Advanced Technology Solar Telescope slated to be built in the 20-teens, and the HMI instrument aboard the Solar Dynamics Observatory, launched in February 2010.".
• Vector_magnetograph wikiPageExternalLink sot_e.
• Vector_magnetograph wikiPageExternalLink sp_e.shtml.
• Vector_magnetograph wikiPageExternalLink htdocs.
• Vector_magnetograph wikiPageExternalLink firs.
• Vector_magnetograph wikiPageExternalLink inst.
• Vector_magnetograph wikiPageExternalLink solis.nso.edu.
• Vector_magnetograph wikiPageExternalLink IBIS.
• Vector_magnetograph wikiPageExternalLink svm.html.
• Vector_magnetograph wikiPageID "7123853".
• Vector_magnetograph wikiPageLength "4904".
• Vector_magnetograph wikiPageOutDegree "45".
• Vector_magnetograph wikiPageRevisionID "680148384".
• Vector_magnetograph wikiPageWikiLink Advanced_Technology_Solar_Telescope.
• Vector_magnetograph wikiPageWikiLink Antisymmetric_relation.
• Vector_magnetograph wikiPageWikiLink Atom.
• Vector_magnetograph wikiPageWikiLink C._E._K._Mees_Observatory.
• Vector_magnetograph wikiPageWikiLink Category:Astronomical_imaging.
• Vector_magnetograph wikiPageWikiLink Corona.
• Vector_magnetograph wikiPageWikiLink Daniel_K._Inouye_Solar_Telescope.
• Vector_magnetograph wikiPageWikiLink Electron.
• Vector_magnetograph wikiPageWikiLink Emission_spectrum.
• Vector_magnetograph wikiPageWikiLink Euclidean_vector.
• Vector_magnetograph wikiPageWikiLink Helioseismic_and_Magnetic_Imager.
• Vector_magnetograph wikiPageWikiLink Hinode.
• Vector_magnetograph wikiPageWikiLink IVM.
• Vector_magnetograph wikiPageWikiLink In_vitro_maturation.
• Vector_magnetograph wikiPageWikiLink Iron.
• Vector_magnetograph wikiPageWikiLink Line_spectrum.
• Vector_magnetograph wikiPageWikiLink Magnetic_field.
• Vector_magnetograph wikiPageWikiLink Mees_Observatory.
• Vector_magnetograph wikiPageWikiLink Meter.
• Vector_magnetograph wikiPageWikiLink Metre.
• Vector_magnetograph wikiPageWikiLink Moment_(mathematics).
• Vector_magnetograph wikiPageWikiLink Nanometer.
• Vector_magnetograph wikiPageWikiLink Nanometre.
• Vector_magnetograph wikiPageWikiLink National_Solar_Observatory.
• Vector_magnetograph wikiPageWikiLink Photon.
• Vector_magnetograph wikiPageWikiLink Physical_Research_Laboratory,_India.
• Vector_magnetograph wikiPageWikiLink Picometre.
• Vector_magnetograph wikiPageWikiLink Polarimetry.
• Vector_magnetograph wikiPageWikiLink Richard_B._Dunn_Solar_Telescope.
• Vector_magnetograph wikiPageWikiLink SOLIS.
• Vector_magnetograph wikiPageWikiLink Solar_Dynamics_Observatory.
• Vector_magnetograph wikiPageWikiLink Solar_Vector_Magnetograph.
• Vector_magnetograph wikiPageWikiLink Solar_corona.
• Vector_magnetograph wikiPageWikiLink Solar_flare.
• Vector_magnetograph wikiPageWikiLink Space_weather.
• Vector_magnetograph wikiPageWikiLink Spectral_line.
• Vector_magnetograph wikiPageWikiLink Spectropolarimeter.
• Vector_magnetograph wikiPageWikiLink Sun.
• Vector_magnetograph wikiPageWikiLink Symmetric.
• Vector_magnetograph wikiPageWikiLink Symmetry.
• Vector_magnetograph wikiPageWikiLink Telescope.
• Vector_magnetograph wikiPageWikiLink Three-dimensional_space.
• Vector_magnetograph wikiPageWikiLink Three-dimensional_space_(mathematics).
• Vector_magnetograph wikiPageWikiLink Udaipur_Solar_Observatory.
• Vector_magnetograph wikiPageWikiLink Vector_(geometric).
• Vector_magnetograph wikiPageWikiLink Wavelength.
• Vector_magnetograph wikiPageWikiLink Zeeman_effect.
• Vector_magnetograph wikiPageWikiLink Zeeman_splitting.
• Vector_magnetograph wikiPageWikiLinkText "Vector Magnetograph".
• Vector_magnetograph wikiPageWikiLinkText "vector magnetograph".
• Vector_magnetograph hasPhotoCollection Vector_magnetograph.
• Vector_magnetograph wikiPageUsesTemplate Template:Reflist.
• Vector_magnetograph subject Category:Astronomical_imaging.
• Vector_magnetograph hypernym Telescope.
• Vector_magnetograph type ArtificialSatellite.
• Vector_magnetograph comment "A vector magnetograph is a type of imaging telescope that can estimate the 3-D vector of the magnetic field on a distant body with a resolved line spectrum.".
• Vector_magnetograph label "Vector magnetograph".
• Vector_magnetograph sameAs m.0h5c6h.
• Vector_magnetograph sameAs Q7917830.
• Vector_magnetograph sameAs Q7917830.
• Vector_magnetograph wasDerivedFrom Vector_magnetograph?oldid=680148384.
• Vector_magnetograph isPrimaryTopicOf Vector_magnetograph.