Description:

The main purpose of the Wind spacecraft is to measure the incoming solar wind, magnetic fields and particles, although early on it will also observe the Earth's foreshock region. Wind, together with Geotail, Polar, SOHO, and Cluster projects, constitute a cooperative scientific satellite project designated the International Solar Terrestrial Physics (ISTP) program which aims at gaining improved understanding of the physics of solar terrestrial relations. The Energetic Particles: Acceleration, Composition and Transport (EPACT) investigation is designed to make comprehensive observations of solar, interplanetary, and galactic particles over wide ranges of charge, mass, and intensity using a combination of 8 different particle telescopes. Energetic particles are electrons or ions of all the chemical elements that have been accelerated to speeds of one tenth of the speed of light or more. These particles are accelerated in solar flares and at shock waves driven out from the Sun by fast coronal mass ejections (CMEs). They are accelerated in planetary magnetospheres and bow shocks and at the heliospheric termination shock where the solar wind runs into interstellar material (these latter particles are called anomalous cosmic rays (ACRs). The galactic cosmic rays (GCRs) are accelerated by shock waves from distant supernovae. EPACT data is available from the Polar-Wind-Geotail (PWG) Data Archive ( ftp://pwgdata.gsfc.nasa.gov/pub/00readme.html ) and at the NSSDC CDAWeb ( http://cdaweb.gsfc.nasa.gov/cdaweb/ )

Links:

• Data link
• Data link
• Data link
• Data link
• Metadata link
• Metadata link
• Metadata link
• WIND_EPACT

Temporal Extent:

Start: 1994-11-01T00:00:00.000Z

Spatial Extent:

Minimum Bounding Rectangle: -90 -180 90 180

SCIOPS Short Name: WIND_EPACT Version ID: Not provided Unique ID: C1214615353-SCIOPS

Description:

The main purpose of the Wind spacecraft is to measure the incoming solar wind, magnetic fields and particles, although early on it will also observe the Earth's foreshock region. Wind, together with Geotail, Polar, SOHO, and Cluster projects, constitute a cooperative scientific satellite project designated the International Solar Terrestrial Physics (ISTP) program which aims at gaining improved understanding of the physics of solar terrestrial relations. The magnetic field experiment on WIND provides data for studies of a broad range of scales of structures and fluctuation characteristics of the interplanetary magnetic field throughout the mission, and, where appropriate, relate them to the statics and dynamics of the magnetosphere. The basic instrument of the Magnetic Field Investigation (MFI) on the WIND Spacecraft is a boom-mounted dual triaxial fluxgate magnetometer and associated electronics. The dual configuration provides redundancy and also permits accurate removal of the dipolar portion of the spacecraft magnetic field. The instrument provides: (1) near real-time data at nominally one vector per 92 s as key parameter data for broad dissemination, (2) rapid data at 10.9 vectors/s for standard analysis, (3) occasionally, snapshot (SS) memory data and Fast Fourier Transform data (FFT), both based on 44 vectors/s. These measurements are precise (0.025%), accurate, ultra-sensitive (0.008 nT/step quantization), and where the sensor noise level is < 0.006 nT r.m.s for 0-10 Hz. The digital processing unit utilizes a 12-bit microprocessor controlled analogue-to-digital converter. The instrument features a very wide dynamic range of measurement capability, from 4 nT up to 65 536 nT per axis in eight discrete ranges. (The upper range permits complete testing in the Earth's field.) In the FFT mode power spectral density elements are transmitted to the ground as fast as once every 23 s (high rate), and 2.7 min of SS memory time series data, triggered automatically by pre-set command, requires typically about 5.1 hours for transmission. Standard data products are the following vector field averages: 0.0226-s (detail data from SS), 0.092 s ('detail' in standard mode), 3 s, 1 min, and 1 hour, in both GSE and GSM coordinates, as well as the FFT spectral elements.

Links:

• Data link
• Data link
• Data link
• Data link
• Data link
• Metadata link
• Metadata link
• WIND_MFI

Temporal Extent:

Start: 1994-11-01T00:00:00.000Z

Spatial Extent:

SCIOPS Short Name: WIND_MFI Version ID: Not provided Unique ID: C1214615374-SCIOPS

Description:

The main purpose of the Wind spacecraft is to measure the incoming solar wind, magnetic fields and particles, although early on it will also observe the Earth's foreshock region. Wind, together with Geotail, Polar, SOHO, and Cluster projects, constitute a cooperative scientific satellite project designated the International Solar Terrestrial Physics (ISTP) program which aims at gaining improved understanding of the physics of solar terrestrial relations. The Solar Wind Experiment (SWE) is a collaborative effort of Goddard Space Flight Center (GSFC), University of New Hampshire (UNH), and Massachusetts Institute of Technology (MIT). The WIND SWE (Solar Wind Experiment) instrument includes 2 Faraday cup ion detectors provided by the MIT Center for Space Research. The Faraday cup detectors were activated on 12 November 1994, and have operated perfectly since then. The Faraday cups provide measurements of the solar wind protons and alpha particles at energy/charge up to 8 keV, and MIT is responsible for analysis of the Faraday cup data. SWE plots and data are available from MIT: http://web.mit.edu/space/www/wind/wind_data.html and from the Polar-Wind-Geotail (PWG) Data Archive (ftp://pwgdata.gsfc.nasa.gov/pub/00readme.html) and at the NSSDC CDAWeb (http://cdaweb.gsfc.nasa.gov/cdaweb/) Solar wind proton and alpha particle parameters are available at full 92-sec resolution from NSSDC's ftp site: ftp://nssdcftp.gsfc.nasa.gov/spacecraft_data/wind/plasma_swe/2-min/

Links:

• Data link
• Data link
• Data link
• Data link
• Data link
• Metadata link
• Metadata link
• Metadata link
• Metadata link
• WIND_SWE

Temporal Extent:

Start: 1994-11-01T00:00:00.000Z

Spatial Extent:

SCIOPS Short Name: WIND_SWE Version ID: Not provided Unique ID: C1214615375-SCIOPS

Description:

The main purpose of the Wind spacecraft is to measure the incoming solar wind, magnetic fields and particles, although early on it will also observe the Earth's foreshock region. Wind, together with Geotail, Polar, SOHO, and Cluster projects, constitute a cooperative scientific satellite project designated the International Solar Terrestrial Physics (ISTP) program which aims at gaining improved understanding of the physics of solar terrestrial relations. The Transient Gamma-Ray Spectrometer (TGRS) aboard the WIND spacecraft is designed to perform spectroscopy of both transient and steady sources in the hard X-ray and gamma-ray region (~20-8000 keV). There are several line-forming physical processes in this region that make it particularly interesting for spectroscopy, such as particle acceleration, interaction, and confinement, cyclotron, annihilation and nuclear processes. The more energetic events in the sky are usually responsible, such as supernovae, neutron stars, and material falling into black holes. Astrophysical sources studied and monitored by TGRS include gamma-ray bursts (GRBs), solar flares, bright galactic transient sources like the recently discovered GRO J1655-40, and steady sources like the Crab and the Galactic Center. TGRS with its high resolution and moderate sensitivity, and KONUS (the other gamma-ray instrument on WIND) with its high sensitivity but lesser resolution ideally complement each other in these observations. The main objective of TGRS is to perform high resolution measurements of GRB spectra and time histories, with particular emphasis on the search for line features in the energy spectra. As part of an interplanetary network of spacecrafts, KONUS is currently supporting the extremely important deep search for quiescent GRB counterparts in other wavelengths by contributing to the determination of accurate GRB locations from multi-spacecraft timing. Data is available at the NSSDC CDAWeb (http://cdaweb.gsfc.nasa.gov/cdaweb/)

Links:

• Data link
• Data link
• Metadata link
• Metadata link
• Metadata link
• WIND_TGRS

Temporal Extent:

Start: 1994-11-01T00:00:00.000Z

Spatial Extent:

SCIOPS Short Name: WIND_TGRS Version ID: Not provided Unique ID: C1214615338-SCIOPS