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Real-Time Detection Of Gravitational Microlensing

Published online by Cambridge University Press:  25 May 2016

M.R. Pratt ,
C. Alcock ,
R.A. Allsman ,
D. Alves ,
T.S. Axelrod ,
A. Becker ,
D.P. Bennett ,
K.H. Cook ,
K.C. Freeman  and
K. Griest
...Show all authors
M.R. Pratt
Affiliation:
Department Astronomy, University of Washington, Seattle, WA 98195
C. Alcock
Affiliation:
Center for Particle Astrophysics, Berkeley, CA 94720 Lawrence Livermore National Laboratory, Livermore, CA 94550 Mt. Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia
R.A. Allsman
Affiliation:
Center for Particle Astrophysics, Berkeley, CA 94720 Lawrence Livermore National Laboratory, Livermore, CA 94550 Mt. Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia
D. Alves
Affiliation:
Center for Particle Astrophysics, Berkeley, CA 94720 Lawrence Livermore National Laboratory, Livermore, CA 94550 Mt. Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia
T.S. Axelrod
Affiliation:
Center for Particle Astrophysics, Berkeley, CA 94720 Lawrence Livermore National Laboratory, Livermore, CA 94550 Mt. Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia
A. Becker
Affiliation:
Center for Particle Astrophysics, Berkeley, CA 94720 Lawrence Livermore National Laboratory, Livermore, CA 94550 Mt. Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia
D.P. Bennett
Affiliation:
Center for Particle Astrophysics, Berkeley, CA 94720 Lawrence Livermore National Laboratory, Livermore, CA 94550 Mt. Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia
K.H. Cook
Affiliation:
Center for Particle Astrophysics, Berkeley, CA 94720 Lawrence Livermore National Laboratory, Livermore, CA 94550 Mt. Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia
K.C. Freeman
Affiliation:
Center for Particle Astrophysics, Berkeley, CA 94720 Lawrence Livermore National Laboratory, Livermore, CA 94550 Mt. Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia
K. Griest
Affiliation:
Center for Particle Astrophysics, Berkeley, CA 94720 Lawrence Livermore National Laboratory, Livermore, CA 94550 Mt. Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia
J. Guern
Affiliation:
Center for Particle Astrophysics, Berkeley, CA 94720 Lawrence Livermore National Laboratory, Livermore, CA 94550 Mt. Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia
M. Lehner
Affiliation:
Center for Particle Astrophysics, Berkeley, CA 94720 Lawrence Livermore National Laboratory, Livermore, CA 94550 Mt. Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia
S.L. Marshall
Affiliation:
Center for Particle Astrophysics, Berkeley, CA 94720 Lawrence Livermore National Laboratory, Livermore, CA 94550 Mt. Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia
B.A. Peterson
Affiliation:
Center for Particle Astrophysics, Berkeley, CA 94720 Lawrence Livermore National Laboratory, Livermore, CA 94550 Mt. Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia
P.J. Quinn
Affiliation:
Center for Particle Astrophysics, Berkeley, CA 94720 Lawrence Livermore National Laboratory, Livermore, CA 94550 Mt. Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia
D. Reiss
Affiliation:
Center for Particle Astrophysics, Berkeley, CA 94720 Lawrence Livermore National Laboratory, Livermore, CA 94550 Mt. Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia
A.W. Rodgers
Affiliation:
Center for Particle Astrophysics, Berkeley, CA 94720 Lawrence Livermore National Laboratory, Livermore, CA 94550 Mt. Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia
C. Stubbs
Affiliation:
Center for Particle Astrophysics, Berkeley, CA 94720 Lawrence Livermore National Laboratory, Livermore, CA 94550 Mt. Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia
W. Sutherland
Affiliation:
Center for Particle Astrophysics, Berkeley, CA 94720 Lawrence Livermore National Laboratory, Livermore, CA 94550 Mt. Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia
D.L. Welch
Affiliation:
Center for Particle Astrophysics, Berkeley, CA 94720 Lawrence Livermore National Laboratory, Livermore, CA 94550 Mt. Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia

Abstract

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Real-time detection of microlensing has moved from proof of concept in 1994 (Udalski et al. 1994a, Alcock et al. 1994) to a steady stream of events this year. Global dissemination of these events by the MACHO and OGLE collaborations has made possible intensive photometric and spectroscopic follow up from widely dispersed sites confirming the microlensing hypothesis (Benetti 1995). Improved photometry and increased temporal resolution from follow up observations greatly increases the possibility of detecting deviations from the standard point-source, point-lens, inertial motion microlensing model. These deviations are crucial in understanding individual lensing systems by breaking the degeneracy between lens mass, position and velocity. We report here on GMAN (Global Microlensing Alert Network), the coordinated follow up of MACHO alerts.

Type
Chapter 7: Microlensing In the Galaxy
Information
Symposium - International Astronomical Union , Volume 173: Astrophysical Applications of Gravitational Lensing , 1996 , pp. 221 - 226
Copyright
Copyright © Kluwer 1996 

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