An Updated Ultraviolet Calibration for the Swift/UVOT

By A. Breeveld, Wayne B. Landsman, S. Holland, P. Roming, N. Kuin, M. Page. 2011

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We present an updated calibration of the Swift/UVOT broadband ultraviolet (uvw1, uvm2, and uvw2) filters. The new calibration accounts for the ∼1% per year decline in the UVOT sensitivity observed in all filters, and makes use of additional calibration sources with a wider range of colours and with HST spectrophotometry. In this paper we present the new effective area curves and instrumental photometric zeropoints and compare with the previous calibration.

Subfields: Aerospace Engineering, Atmospheric Science

View Paper: https://www.semanticscholar.org/paper/d88682fdb73faa7ba23a35fed537341653f3df94