Abstract

Several exoplanets have been detected towards the Galactic bulge with the microlensing technique. We show that exoplanets in M31 may also be detected with the pixel-lensing method, if telescopes making high cadence observations of an ongoing microlensing event are used. Using a Monte Carlo approach we find that the mean mass for detectable planetary systems is about 2 M J. However, even small mass exoplanets ({M_P < 20 M_{oplus}}) can cause significant deviations, which are observable with large telescopes. We reanalysed the POINT-AGAPE microlensing event PA-99-N2. First, we test the robustness of the binary lens conclusion for this light curve. Second, we show that for such long duration and bright microlensing events, the efficiency for finding planetary-like deviations is strongly enhanced with respect to that evaluated for all planetary detectable events.

Autore Pugliese

• Nucita Achille , De Paolis Francesco , Ingrosso Gabriele

Tutti gli autori

• G. Ingrosso , F. De Paolis , S. Calchi Novati , Ph. Jetzer , A. A. Nucita , A. F. Zakharov

Titolo volume/Rivista

GENERAL RELATIVITY AND GRAVITATION

Anno di pubblicazione

2011

ISSN

0001-7701

ISBN

Non Disponibile

Numero di citazioni Wos

10

Ultimo Aggiornamento Citazioni

28/04/2018

Numero di citazioni Scopus

9

Ultimo Aggiornamento Citazioni

28/04/2018

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile