Physics
Scientific paper
Sep 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998cxo..prop..301c&link_type=abstract
Chandra Proposal ID #01700097
Physics
Chandra Proposal Id #01700097
Scientific paper
Mkn 421 is a bright BL lac object with a simple absorbed power-law continuum. This source will be used to measure the relative throughput of the gratings. Mkn 421 was the primary in-flight spectroscopic calibration source for the ROSAT PSPC. The LETG/HRC-S observation will be done simultaneously with a EUVE observation to allow a cross calibration of LETG/HRC-S in the 100-160A spectral region. The EUVE observing window for Mkn421 is between 11/22 and 5/17.
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