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Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-48327

Ingrosso, G; Calchi Novati, S; De Paolis, F; Jetzer, P; Nucita, A; Zakharov, A (2011). Search for exoplanets in M31 with pixel-lensing and the PA-99-N2 event revisited. General Relativity and Gravitation, 43(4):1047-1060.

Accepted Version


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_{⊕}}) 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.

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute for Computational Science
DDC:530 Physics
Date:April 2011
Deposited On:19 Feb 2012 18:57
Last Modified:16 Jan 2014 06:05
ISSN:0001-7701 (P) 1572-9532 (E)
Additional Information:The original publication is available at www.springerlink.com
Publisher DOI:10.1007/s10714-010-0942-3
Related URLs:http://arxiv.org/abs/1001.4342
Citations:Web of Science®. Times Cited: 6
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Scopus®. Citation Count: 8

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