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Title:
A Search for a Pulsar in the Remnant of SN 1987A with the Hubble Space Telescope High-Speed Photometer
Authors:
Percival, J. W.; Boyd, P. T.; Biggs, J. D.; Dolan, J. F.; Bless, R. C.; Elliot, J. L.; Nelson, M. J.; Robinson, E. L.; Taylor, M. J.; van Citters, G. W.; Wolinski, K. G.
Publication:
Astrophysical Journal v.446, p.832 (ApJ Homepage)
Publication Date:
06/1995
Origin:
APJ; KNUDSEN
ApJ Keywords:
TECHNIQUES: PHOTOMETRIC, STARS: PULSARS: INDIVIDUAL ALPHANUMERIC: SN 1987A, ULTRAVIOLET: STARS
DOI:
10.1086/175840
Bibliographic Code:
1995ApJ...446..832P

Abstract

The High Speed Photometer (HSP) on the Hubble Space Telescope (HST) observed the remnant of SN 1987A on four different epochs between 1992 June 2 and 1993 November 4 in a 1600-7000 Å bandpass. Each observation was ˜40 minutes in duration and used a 100 microseconds sampling time. Assuming a spectrum like PSR B0540 -69 with similar reddening, the observed count rates imply a time-averaged magnitude V ≍ 18.2. After correcting to the barycenter of the solar system, no periodic signal was found in any data set using autocorrelation function (ACF) analyses with lags from 200 microseconds to 10 s and power spectral function (PSF) analyses with a Nyquist frequency corresponding to a period of 200 μs, or in trial pulse profiles obtained by binning the data modulo the frequencies of highest significance in the ACF and PSF analyses. Searches for signals with large values of P also proved negative. We estimate an upper limit of V fainter than ˜24 for pulsed radiation from any stellar remnant of SN 1987A.

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