activity
20062026
most citedThe Fifth Data Release of the Sloan Digital Sky Survey

744 citations · 8k across the 131 of their papers we have counts for

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Showing 2018Show all

7 papers · 1 filter

astro-ph.SR2018

Predicted microlensing events by nearby very-low-mass objects: Pan-STARRS DR1 vs. Gaia DR2

M. B. Nielsen, D. M. Bramich

Microlensing events can be used to directly measure the masses of single field stars to a precision of 1-10\%. The majority of direct mass measurements for stellar and sub-st…

astro-ph.EP2018★ 12 cited

First assessment of the binary lens OGLE-2015_BLG-0232

E. Bachelet, V. Bozza, C. Han +51

We present an analysis of the microlensing event OGLE-2015-BLG-0232. This event is challenging to characterize for two reasons. First, the light curve is not well sampled during th…

astro-ph.SR2018★ 14 cited

A search for black hole microlensing signatures in globular cluster NGC 6656 (M 22)

N. Kains, A. Calamida, K. C. Sahu +3

We report the results of a study aiming to detect signs of astrometric microlensing caused by an intermediate-mass black hole (IMBH) in the center of globular cluster M 22 (NGC 665…

astro-ph.EP2018★ 11 cited

OGLE-2014-BLG-1186: gravitational microlensing providing evidence for a planet orbiting the foreground star or for a close binary source?

M. Dominik, E. Bachelet, V. Bozza +40

(abridged) Using the particularly long gravitational microlensing event OGLE-2014-BLG-1186 with a time-scale ~ 300 d, we present a methodology for identifying the na…

astro-ph.SR2018

An almanac of predicted microlensing events for the 21st century

D. M. Bramich, M. B. Nielsen

Using Gaia data release 2 (GDR2), we present an almanac of 2,509 predicted microlensing events, caused by 2,130 unique lens stars, that will peak between 25th July 2026 and the end…

astro-ph.SR2018★ 29 cited

Predicted microlensing events from analysis of Gaia Data Release 2

D. M. Bramich

Astrometric microlensing can be used to make precise measurements of the masses of lens stars that are independent of their assumed internal physics. Such direct mass measurements,…