HEASARC Staff Scientist Position - Applications are now being accepted for a Staff Scientist with significant experience and interest in the technical aspects of astrophysics research, to work in the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD. Refer to the AAS Job register for full details.

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This Legacy journal article was published in Volume 4, February 1994, and has not been updated since publication. Please use the search facility above to find regularly-updated information about this topic elsewhere on the HEASARC site.

Table 2

Additional units allowed within OGIP datasets & software

  Quantity          Unit        Meaning		       Notes
                    String


plane angle         deg         degree of arc          1.745533 x 10-2 rad
                    arcsec      second of arc          4.848137 x 10-6 rad
                    arcmin      minute of arc          2.90888 x 10-4 rad
time                min         minute                 (incl sidereal time if appropriate)
                    h           hour                   (incl sidereal time if appropriate)
                    d           day                    8.64 x 104 s
                    yr          year (Julian)          3.15576 x107 s (365.25 d)
energy           +  eV          electron volt          1.602177 x 10--19 J
                    erg         erg                    10-7 J
length              angstrom    angstrom               10-10 m
                    AU          astronomical unit      1.49598 x 1011 m
                    lyr         light year             9.460530 x 1015 m
                 +  pc          parsec       	       3.0857 x 1016 m
events              count       counts
                    photon      photons
flux density     +  Jy          jansky       	       10-26 W m-2 Hz-1
                    mag         (stellar) magnitude    (see text)
                 +  Crab        'crab'       	       (see text)
magnetic field      G           gauss                  10-4 T
area                pixel       (image/detector) pixel
                    barn        barn                   10-28 m2
Miscellaneous 'units'    
             	    chan        (detector) channel
                    bin         numerous applications  (including the 1-d analog of pixel)
                    voxel       3-d analog of pixel
                    byte        (computer) byte

+ - addition of prefixes for decimal multiples & submultiples are allowed
(see Section 2.3)

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Last modified: Monday, 19-Jun-2006 11:40:52 EDT

HEASARC Staff Scientist Position - Applications are now being accepted for a Staff Scientist with significant experience and interest in the technical aspects of astrophysics research, to work in the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD. Refer to the AAS Job register for full details.