A systematic fitting scheme for caustic-crossing microlensing events

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Standard

A systematic fitting scheme for caustic-crossing microlensing events. / Kains ...[et al], N.; Jørgensen, Uffe Gråe.

I: Royal Astronomical Society. Monthly Notices, Bind 395, Nr. 2, 11.05.2009, s. 787-796.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Kains ...[et al], N & Jørgensen, UG 2009, 'A systematic fitting scheme for caustic-crossing microlensing events', Royal Astronomical Society. Monthly Notices, bind 395, nr. 2, s. 787-796. https://doi.org/10.1111/j.1365-2966.2009.14615.x

APA

Kains ...[et al], N., & Jørgensen, U. G. (2009). A systematic fitting scheme for caustic-crossing microlensing events. Royal Astronomical Society. Monthly Notices, 395(2), 787-796. https://doi.org/10.1111/j.1365-2966.2009.14615.x

Vancouver

Kains ...[et al] N, Jørgensen UG. A systematic fitting scheme for caustic-crossing microlensing events. Royal Astronomical Society. Monthly Notices. 2009 maj 11;395(2):787-796. https://doi.org/10.1111/j.1365-2966.2009.14615.x

Author

Kains ...[et al], N. ; Jørgensen, Uffe Gråe. / A systematic fitting scheme for caustic-crossing microlensing events. I: Royal Astronomical Society. Monthly Notices. 2009 ; Bind 395, Nr. 2. s. 787-796.

Bibtex

@article{41b6d23c98a0468f880e9bd9a0556786,
title = "A systematic fitting scheme for caustic-crossing microlensing events",
abstract = "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. In order to identify all possible models we conduct an extensive search of the parameter space, followed by a refinement of the parameters with a Markov Chain Monte Carlo algorithm. We find a number of low-chi(2) regions in the parameter space, which lead to several distinct competitive best models. We examine the parameters for each of them, and estimate their physical properties. We find that our fitting strategy locates several minima that are difficult to find with other modelling strategies and is therefore a more appropriate method to fit this type of event. ",
author = "{Kains ...[et al]}, N. and J{\o}rgensen, {Uffe Gr{\aa}e}",
year = "2009",
month = may,
day = "11",
doi = "10.1111/j.1365-2966.2009.14615.x",
language = "English",
volume = "395",
pages = "787--796",
journal = "Royal Astronomical Society. Monthly Notices",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "2",

}

RIS

TY - JOUR

T1 - A systematic fitting scheme for caustic-crossing microlensing events

AU - Kains ...[et al], N.

AU - Jørgensen, Uffe Gråe

PY - 2009/5/11

Y1 - 2009/5/11

N2 - 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. In order to identify all possible models we conduct an extensive search of the parameter space, followed by a refinement of the parameters with a Markov Chain Monte Carlo algorithm. We find a number of low-chi(2) regions in the parameter space, which lead to several distinct competitive best models. We examine the parameters for each of them, and estimate their physical properties. We find that our fitting strategy locates several minima that are difficult to find with other modelling strategies and is therefore a more appropriate method to fit this type of event.

AB - 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. In order to identify all possible models we conduct an extensive search of the parameter space, followed by a refinement of the parameters with a Markov Chain Monte Carlo algorithm. We find a number of low-chi(2) regions in the parameter space, which lead to several distinct competitive best models. We examine the parameters for each of them, and estimate their physical properties. We find that our fitting strategy locates several minima that are difficult to find with other modelling strategies and is therefore a more appropriate method to fit this type of event.

U2 - 10.1111/j.1365-2966.2009.14615.x

DO - 10.1111/j.1365-2966.2009.14615.x

M3 - Journal article

VL - 395

SP - 787

EP - 796

JO - Royal Astronomical Society. Monthly Notices

JF - Royal Astronomical Society. Monthly Notices

SN - 0035-8711

IS - 2

ER -

ID: 35377098