... User Guide ] In August 1994, the nominal flux density of the ATCA's primary flux calibrator, 1934-638, was revised to give better agreement between the ATCA's flux density scale and the flux scales used in the northern hemisphere (the VLA in particular). ... This introduces a problem when mixing data (either combining or just comparing) calibrated before and after this change. ... However if you use the option `oldflux' in GPCAL and MFCAL when calibrating 1934-638, the old flux scale will be used. ...

... We propose to obtain low-resolution COS-FUV spectra of a sample of nearby star-forming galaxies with existing rest-frame optical spectroscopy. By combining optical and UV observations of these galaxies, we will be able to directly compare previously-determined metallicities from optical emission line diagnostics with those determined from newly-observed photospheric and stellar wind lines in the UV, including the abundance-sensitive 1425A and 1978A photospheric blends. ...

... Watchouts . ... Documentation . Calibration . Help . cifdiff is the SAS tool you need. It lists the differences between two Calibration Index Files (CIFs). Please, refer to the on-line task documentation for its description. ciffdiff can be applied also on the CIF included as one of the extensions in the PPS-produced event lists. ... Pages maintained by SAS librarian . Any question about SAS should be addressed to the XMM-Newton help desk . Updated on: November 18, 2006 ...

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... Energy . ... The free ions and electrons in a plasma behave the same way. Knowing the temperature of the high atmosphere of Earth, or that of the Sun, we can calculate energies expected of ions and electrons found there. However, ions and electrons actually observed in space are often much, much more energetic, and may move at a respectable fraction of the velocity of light (300,000 km/sec or 186,000 miles/sec). ... Typical energy of an electron in the polar aurora. 40,000 ev . ... 50,000 ev . ...

... Apache HTTP Server Version 2.2 . ... Authorization based on file ownership . ... This module authorizes access to files by comparing the userid used for HTTP authentication (the web userid) with the file-system owner or group of the requested file. ... file-owner . ... The name of the system group that owns the file must be present in a group database, which is provided, for example, by mod_authz_groupfile or mod_authz_dbm , and the web-username must be a member of that group. ... Require file-group...

... Apache HTTP Server Version 2.2 . ... Authorization based on file ownership . ... This module authorizes access to files by comparing the userid used for HTTP authentication (the web userid) with the file-system owner or group of the requested file. ... file-owner . ... The name of the system group that owns the file must be present in a group database, which is provided, for example, by mod_authz_groupfile or mod_authz_dbm , and the web-username must be a member of that group. ... Require file-group...