2020
DOI: 10.3847/1538-4357/ab5fd3
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Abstract: We present a new Milky Way microlensing simulation code, dubbed PopSyCLE (Population Synthesis for Compact object Lensing Events). PopSyCLE is the first resolved microlensing simulation to include a compact object distribution derived from numerical supernovae explosion models and both astrometric and photometric microlensing effects. We demonstrate the capabilities of PopSyCLE by investigating the optimal way to find black holes (BHs) with microlensing. Candidate BHs have typically been selected from wide-fie… Show more

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Cited by 42 publications
(102 citation statements)
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References 112 publications
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“…Mróz et al (2020a) conducted the largest Galactic plane search for microlensing events prior to this work, discovering 630 events in the OGLE survey observing 3000 square degrees of the Galactic plane between 2013 and 2019. ZTF Lam et al (2020) found that black holes could be identified by placing microlensing events in the t E -π E space and looking for the events with the largest t E and the shortest π E . In Figure 14 we place our events in this space, alongside all observable events from within our PopSyCLE simulations.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…Mróz et al (2020a) conducted the largest Galactic plane search for microlensing events prior to this work, discovering 630 events in the OGLE survey observing 3000 square degrees of the Galactic plane between 2013 and 2019. ZTF Lam et al (2020) found that black holes could be identified by placing microlensing events in the t E -π E space and looking for the events with the largest t E and the shortest π E . In Figure 14 we place our events in this space, alongside all observable events from within our PopSyCLE simulations.…”
Section: Discussionmentioning
confidence: 99%
“…Only a few can be rigorously follow up astrometrically and the astrometric signal of events found toward the bulge is at the edge of current observational capabilities. Simulations indicate that black hole candidates can be ideally selected from a list of microlensing events by searching for those with larger Einstein crossing time and smaller microlensing parallaxes (Lam et al 2020). Furthermore simulations indicate that events in the Galactic plane have larger microlensing parallaxes and astrometric shifts overall that can make finding black hole candidates amongst these surveys easier than surveys pointed toward the Galactic bulge (Medford et al 2020).…”
mentioning
confidence: 96%
“…For initial-final mass relationships of remnants, we apply the model used by Lam et al (2020), where a linear relation of Kalirai et al (2008), M WD = 0.109M ini + 0.394M , is used for white dwarfs and a modified probabilistic relation based on Raithel et al (2018) is used for neutron stars and black holes. See Appendix C of Lam et al (2020) and references therein for more details.…”
Section: Stellar Mass Functionmentioning
confidence: 99%
“…This method has also been used to make detailed predictions for exoplanet microlensing yields for forthcoming space missions such as Euclid (Penny et al 2013) and NGRST (Penny et al 2019) using a more recent version of the BGM (variant BGM1106). Recently, a population synthesis based microlensing model has been developed to study microlensing due to black holes (Lam et al 2020). Penny et al (2019) noted that the BGM1106 model does not provide a close match to the HST stellar kinematics study of Clarkson et al (2008).…”
Section: The Besançon Galactic Modelmentioning
confidence: 99%