An Updated Ultraviolet Calibration for the Swift/UVOT
Abstract
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.
- Publication:
-
Gamma Ray Bursts 2010
- Pub Date:
- August 2011
- DOI:
- 10.1063/1.3621807
- arXiv:
- arXiv:1102.4717
- Bibcode:
- 2011AIPC.1358..373B
- Keywords:
-
- astrometry;
- spectrophotometry;
- gamma-ray sources (astronomical);
- colour;
- 95.55.Br;
- 95.75.Fg;
- 98.70.Rz;
- 98.62.Qz;
- Astrometric and interferometric instruments;
- Spectroscopy and spectrophotometry;
- gamma-ray sources;
- gamma-ray bursts;
- Magnitudes and colors;
- luminosities;
- Astrophysics - Instrumentation and Methods for Astrophysics
- E-Print:
- 4 pages, 3 figures, 2 tables. Presented at GRB 2010 symposium, Annapolis, November 2010 to be published in American Institute of Physics Conference Series