Ion data from the Plasma Composition Experiment on ISEE-1 consist of a combination of (a) velocity moments for the four principal magnetospheric ion species H+, He++, He+, and O+, calculated in two different ways (using two different sets of assumptions) and covering the 0.01-0.1 and 0.1-16 keV/e energy ranges, (b) energy-angle spectra for the same four ions plus O++, covering the 0.01-17.9 keV/e range, and (c) mass spectra (<1 amu/e to about 150 amu/e) for four energy ranges, all derived once per each complete energy-mass scan cycle of the instrument, or once each 1- to 20-minute interval, depending on mode of operation, as well as (d) "total ion" moments, derived once per energy scan and assuming total count rate is due to H+ ions (0.1-16 keV).
These hardcopy plots were provided as a supplement to the digital data from the Plasma Composition Experiment (NSSDC data set 77-102A-12I). A subset of the data in the digital data files is plotted in graphical form in a series of booklets, one booklet for each month of data. There are two pages of graphs for each day, and each page has a stack of 7 panels showing the variation of different parameters during the course of a 12-hour Universal Time interval. Panel 1 (top panel) shows densities of He++, He+, and O+ ions, and the "total" ion density (per cubic meter); Panel 2 shows He++/H+ density ratio; Panel 3 shows ion "thermal" energy (eV); Panel 4 shows "thermal" energy density multiplied by 2/3 along with the magnetic pressure (eV/m^3) and field strength (nT); Panel 5 shows ion drift speed (meters/sec) in the GSE X-Y plane; Panel 6 shows magnetic field elevation angle (degrees) relative to the GSE X-Y plane; Panel 7 shows ion drift angle and the magnetic longitude angle.
This database is the ISO (Infrared Space Observatory) Observation Log of Validated Data. ISO is an ESA (European Space Agency) project with instruments funded by ESA member states (especially the PI countries of France, Germany, the Netherlands and the United Kingdom), and with the participation of ISAS (Japan) and NASA (USA). ISO operated from November 1995 till May 1998, almost a year longer than expected. As an unprecedented observatory for infrared astronomy, able to examine the cool and hidden places in the Universe, ISO successfully made nearly 30,000 scientific observations. The ISO data can be retrieved from the ISO Data Archive (<a href="http://iso.esac.esa.int/ida/">http://iso.esac.esa.int/ida/</a>), which is available at the ISO Data Centre (<a href="http://iso.esac.esa.int/">http://iso.esac.esa.int/</a>), and comprises about 150,000 observations, including calibration, parallel mode and serendipitous observations. The present catalog contains all observations performed in standard observing modes exempt from technical problems; special flags indicate calibration observations. The catalog gives observation details and provides links to quick-look images depicting the data and to observation-specific documentation. The ISO helpdesk can be reached at <a href="http://iso.esac.esa.int/esupport/">http://iso.esac.esa.int/esupport/</a> This online catalog was last updated by the HEASARC in September 2004 based on the machine-readable table <a href="https://cdsarc.cds.unistra.fr/ftp/cats/VI/111/isolog.dat.gz">https://cdsarc.cds.unistra.fr/ftp/cats/VI/111/isolog.dat.gz</a> obtained from the CDS data center. This is a service provided by NASA HEASARC .
IUE (International Ultraviolet Explorer) Final Merged Observation Log
Short Name:
IUE
Date:
28 Jun 2024
Publisher:
NASA/GSFC HEASARC
Description:
This IUE (International Ultraviolet Explorer) Observation Log contains a summary of all IUE Newly Extracted Spectra (INES), which resulted from a post-processing effort at VILSPA. It was constructed by using verified data from the IUE Final Archive Master Catalog. The observations cover the whole life of the IUE satellite, from March 1978 to September 1996. This online catalog was ingested by the HEASARC in August 2004 based on the machine-readable table VI/110/inescat.dat obtained from the CDS data center. In May 2020, the program_id values of "\" were changed by the HEASARC to nulls for improved database compatibility. This is a service provided by NASA HEASARC .
Launched in late 2021, the Imaging X-ray Polarimetry Explorer (IXPE) is a NASA Small Explorer Mission in collaboration with the Italian Space Agency (ASI). The mission measures X-ray polarization from compact objects such as neutron stars and black holes, which serve as laboratories for exploring extreme gravitational and magnetic fields. With its imaging capabilities, IXPE will also map the magnetic-field structure of a few extended sources such as supernova remnants and pulsar wind nebulae. This table contains a list of (a) unobserved targets that are planned for observation by IXPE in the future and (b) IXPE observations which have been processed and successfully validated by the IXPE team. The data from these observations may or may not be public and the user should check the value of the public_date parameter to determine the status of a specified data set. Only those ObsIDs which have a public_date in the past will have data publicly available. Observations with a public_date parameter value which is either blank or a date in the future have been ingested into the HEASARC archive but will remain encrypted until their public date. This contents of this database table are generated by the IXPE Team and updated regularly with new observations. These updates are then delivered to the HEASARC and ingested into the HEASARC database in a timely fashion. Note that some parameters have been added and are populated by the HEASARC. This is a service provided by NASA HEASARC .