@Article{SahuACBUDCBBRBKFFYMKPPSSSUWBBBHSKKRRSSTVBMCFHDCDBBMAPGYAACDGGJLMMMNPSJABNBHHHKLMPRRSSSSTWWTSBHS:2022:IsStBl,
author = "Sahu, Kailash C. and Anderson, Jay and Casertano, Stefano and
Bond, Howard E. and Udalski, Andrzej and Dominik, Martin and
Calamida, Annalisa and Bellini, Andrea and Brown, Thomas M. and
Rejkuba, Marina and Bajaj, Varun and Kains, Noe and Ferguson,
Henry C. and Fryer, Chris L. and Yock, Philip and Mroz, Przemek
and Kozlowski, Szymon and Pietrukowicz, Pawel and Poleski, Radek
and Skowron, Jan and Soszynski, Igor and Szymanski, Michal K. and
Ulaczyk, Krzysztof and Wyrzykowski, Lukasz and Barry, Richard K.
and Bennett, David P. and Bond, Ian A. and Hirao, Yuki and Silva,
Stela Ishitani and Kondo, Iona and Koshimoto, Naoki and Ranc,
Clement and Rattenbury, Nicholas J. and Sumi, Takahiro and Suzuki,
Daisuke and Tristram, Paul J. and Vandorou, Aikaterini and
Beaulieu, Philippe and Marquette, Jean-Baptiste and Cole, Andrew
and Fouque, Pascal and Hill, Kym and Dieters, Stefan and Coutures,
Christian and Dominis-Prester, Dijana and Bennett, Clara and
Bachelet, Etienne and Menzies, John and Albrow, Michael and
Pollard, Karen and Gould, Andrew and Yee, Jennifer C. and Allen,
William and Almeida, Leonardo A. and Christie, Grant and Drummond,
John and Gal-Yam, Avishay and Gorbikov, Evgeny and Jablonski,
Francisco Jos{\'e} and Lee, Chung-Uk and Maoz, Dan and Manulis,
Ilan and McCormick, Jennie and Natusch, Tim and Pogge, Richard W.
and Shvartzvald, Yossi and Jorgensen, Uffe G. and Alsubai, Khalid
A. and Andersen and I and Michael and Bozza, Valerio and Novati,
Sebastiano Calchi and Burgdorf, Martin and Hinse, Tobias C. and
Hundertmark, Markus and Husser, Tim-Oliver and Kerins, Eamonn and
Longa-Pena, Penelope and Mancini, Luigi and Penny, Matthew and
Rahvar, Sohrab and Ricci, Davide and Sajadian, Sedighe and
Skottfelt, Jesper and Snodgrass, Colin and Southworth, John and
Tregloan-Reed, Jeremy and Wambsganss, Joachim and Wertz, Olivier
and Tsapras, Yiannis and Street, Rachel A. and Bramich, D. M. and
Horne, Keith and Steele, Iain A.",
affiliation = "{Space Telescope Science Institute} and {} and {} and {} and {}
and {} and {} and {} and {} and {} and {} and {} and {} and {} and
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and {} and {} and {} and {} and {} and {} and {} and {} and {} and
{} and {} and {} and {} and {} and {} and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "An Isolated Stellar-mass Black Hole Detected through Astrometric
Microlensing*",
journal = "Astrophysical Journal",
year = "2022",
volume = "933",
number = "1",
pages = "e83",
month = "July",
abstract = "We report the first unambiguous detection and mass measurement of
an isolated stellar-mass black hole (BH). We used the Hubble Space
Telescope (HST) to carry out precise astrometry of the source star
of the long-duration (t (E) similar or equal to 270 days),
high-magnification microlensing event
MOA-2011-BLG-191/OGLE-2011-BLG-0462 (hereafter designated as
MOA-11-191/OGLE-11-462), in the direction of the Galactic bulge.
HST imaging, conducted at eight epochs over an interval of 6 yr,
reveals a clear relativistic astrometric deflection of the
background star's apparent position. Ground-based photometry of
MOA-11-191/OGLE-11-462 shows a parallactic signature of the effect
of Earth's motion on the microlensing light curve. Combining the
HST astrometry with the ground-based light curve and the derived
parallax, we obtain a lens mass of 7.1 +/- 1.3 M (circle dot) and
a distance of 1.58 +/- 0.18 kpc. We show that the lens emits no
detectable light, which, along with having a mass higher than is
possible for a white dwarf or neutron star, confirms its BH
nature. Our analysis also provides an absolute proper motion for
the BH. The proper motion is offset from the mean motion of
Galactic disk stars at similar distances by an amount
corresponding to a transverse space velocity of similar to 45 km
s(-1), suggesting that the BH received a ``natal kick'' from its
supernova explosion. Previous mass determinations for stellar-mass
BHs have come from radial velocity measurements of Galactic X-ray
binaries and from gravitational radiation emitted by merging BHs
in binary systems in external galaxies. Our mass measurement is
the first for an isolated stellar-mass BH using any technique.",
doi = "10.3847/1538-4357/ac739e",
url = "http://dx.doi.org/10.3847/1538-4357/ac739e",
issn = "0004-637X and 1538-4357",
label = "20220725",
language = "en",
targetfile = "Sahu_2022_ApJ_933_83.pdf",
urlaccessdate = "03 maio 2024"
}