A systematic fitting scheme for caustic-crossing microlensing events

نویسندگان

  • N. Kains
  • A. Cassan
  • K. Horne
  • M. D. Albrow
  • S. Dieters
  • P. Fouqué
  • J. Greenhill
  • A. Udalski
  • M. Zub
  • D. P. Bennett
  • M. Dominik
  • J. Donatowicz
  • D. Kubas
  • Y. Tsapras
  • T. Anguita
  • V. Batista
  • J.-P. Beaulieu
  • S. Brillant
  • M. Bode
  • D. M. Bramich
  • M. Burgdorf
  • J. A. R. Caldwell
  • K. H. Cook
  • D. Dominis Prester
  • U. G. Jørgensen
  • S. Kane
  • J. B. Marquette
  • R. Martin
  • J. Menzies
  • K. R. Pollard
  • N. Rattenbury
  • K. C. Sahu
  • C. Snodgrass
  • I. Steele
  • C. Vinter
  • J. Wambsganss
  • A. Williams
  • M. Kubiak
  • G. Pietrzyński
  • I. Soszyński
  • O. Szewczyk
  • M. K. Szymański
  • K. Ulaczyk
چکیده

We outline a method for fitting binary-lens caustic-crossing microlensing events based on the alternative model parametrization proposed and detailed by Cassan. As an illustration of our methodology, we present an analysis of OGLE-2007-BLG-472, a double-peaked Galactic microlensing event with a source crossing the whole caustic structure in less than three days. E-mail: [email protected] †Member of International Max Planck Research School for Astronomy and Cosmic Physics at the University of Heidelberg. ‡Royal Society University Research Fellow. c © 2009 The Authors. Journal compilation c © 2009 RAS

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تاریخ انتشار 2009