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- b45bd54a-636a-4ab6-ad98-72e7b45b5593 definition "[Source: Stanford University HMI home page, http://hmi.stanford.edu/ ] The primary goal of the Helioseismic and Magnetic Imager (HMI) investigation is to study the origin of solar variability and to characterize and understand the Sun’s interior and the various components of magnetic activity. The HMI investigation is based on measurements obtained with the HMI instrument as part of the Solar Dynamics Observatory (SDO) mission. HMI makes measurements of the motion of the solar photosphere to study solar oscillations and measurements of the polarization in a spectral line to study all three components of the photospheric magnetic field. HMI produces data to determine the interior sources and mechanisms of solar variability and how the physical processes inside the Sun are related to surface magnetic field and activity. It also produces data to enable estimates of the coronal magnetic field for studies of variability in the extended solar atmosphere. HMI observations will enable establishing the relationships between the internal dynamics and magnetic activity in order to understand solar variability and its effects, leading to reliable predictive capability, one of the key elements of the Living With a Star (LWS) program. Group: Instrument_Details Entry_ID: HMI-SDO Group: Instrument_Identification Instrument_Category: Solar/Space Observing Instruments Instrument_Class: Photon/Optical Detectors Short_Name: HMI-SDO Long_Name: Helioseismic and Magnetic Imager on Solar Dynamics Observatory End_Group Group: Associated_Platforms Short_Name: SDO End_Group Group: Spectral_Frequency_Information Wavelength_Keyword: Visible End_Group Online_Resource: http://sdo.gsfc.nasa.gov/mission/instruments.php Online_Resource: http://hmi.stanford.edu/ Sample_Image: http://hmi.stanford.edu/cover_tiny.jpg Creation_Date: 2009-04-24 Group: Instrument_Logistics Instrument_Owner: USA/NASA End_Group End_Group" @default.
- b45bd54a-636a-4ab6-ad98-72e7b45b5593 id "1655352" @default.
- b45bd54a-636a-4ab6-ad98-72e7b45b5593 path_id 02c354fd-8e2d-4825-b786-aa4b0782d1d6 @default.
- b45bd54a-636a-4ab6-ad98-72e7b45b5593 path_id 386ea533-9d98-4202-bad3-bb630ac39a93 @default.
- b45bd54a-636a-4ab6-ad98-72e7b45b5593 path_id b2140059-b3ca-415c-b0a7-3e142783ffe8 @default.
- b45bd54a-636a-4ab6-ad98-72e7b45b5593 path_label "Instruments" @default.
- b45bd54a-636a-4ab6-ad98-72e7b45b5593 path_label "Photon/Optical Detectors" @default.
- b45bd54a-636a-4ab6-ad98-72e7b45b5593 path_label "Solar/Space Observing Instruments" @default.
- b45bd54a-636a-4ab6-ad98-72e7b45b5593 prefLabel "HMI-SDO" @default.
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- b45bd54a-636a-4ab6-ad98-72e7b45b5593 tag "Instruments" @default.