| Affiliation: | NAIC, Arecibo Observatory, HC03 Box 53995, PR 00612, USA;University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire SK11 9DL;Columbia Astrophysics Laboratory, Columbia University, 550 West 120th Street, New York, NY 10027, USA;Australia Telescope National Facility, CSIRO, PO Box 76, Epping, NSW 1710, Australia;Osservatorio Astronomico di Bologna, Via Ranzani 1, 40127 Bologna, Italy;Cagliari Astronomical Observatory, Loc. Poggio dei Pini, Strada 54, 09012 Capoterra (Ca), Italy |
