| |  Online-Ressource |
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| Verfasst von: | Cassan, Arnaud [VerfasserIn]  |
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| | Ranc, Clément [VerfasserIn] |
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| | Absil, Olivier [VerfasserIn] |
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| | Wyrzykowski, Łukasz [VerfasserIn] |
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| | Rybicki, Krzysztof A. [VerfasserIn] |
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| | Bachelet, Étienne [VerfasserIn] |
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| | Le Bouquin, Jean-Baptiste [VerfasserIn] |
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| | Hundertmark, Markus [VerfasserIn] |
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| | Street, Rachel [VerfasserIn] |
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| | Surdej, Jean [VerfasserIn] |
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| | Tsapras, Yiannis [VerfasserIn] |
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| | Wambsganß, Joachim [VerfasserIn] |
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| | Wertz, Olivier [VerfasserIn] |
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| Titel: | Microlensing mass measurement from images of rotating gravitational arcs |
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| Verf.angabe: | Arnaud Cassan, Clément Ranc, Olivier Absil, Łukasz Wyrzykowski, Krzysztof A. Rybicki, Étienne Bachelet, Jean-Baptiste Le Bouquin, Markus Hundertmark, Rachel Street, Jean Surdej, Yiannis Tsapras, Joachim Wambsganss & Olivier Wertz |
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| Jahr: | 2022 |
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| Umfang: | 8 S. |
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| Fussnoten: | Published: 06 December 2021 ; Gesehen am 20.04.2022 |
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| Titel Quelle: | Enthalten in: Nature astronomy |
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| Ort Quelle: | London : Nature Publishing Group, 2017 |
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| Jahr Quelle: | 2022 |
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| Band/Heft Quelle: | 6(2022), 1, Seite 121-128 |
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| ISSN Quelle: | 2397-3366 |
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| Abstract: | Gravitational microlensing1 is a powerful technique for measuring the mass of isolated and faint or non-luminous objects in the Milky Way2,3. In most cases, however, additional observations to the photometric light curve are required to measure accurately the mass of the microlens. Long-baseline optical/infrared interferometry provides a new and efficient way to deliver such independent constraints4-7, as demonstrated recently by first interferometric observations in microlensing event TCP J05074264+2447555 (‘Kojima-1’)8. Here we report real-time observations of gravitationally lensed arcs in rotation around a microlens, Gaia19bld9, made with the PIONIER instrument10 at the Very Large Telescope Interferometer. Our data allowed us to determine the angular separation and length of the arcs, as well as their rotation rate. Combining these measurements with ground-based photometric data enabled the determination of the microlens mass, M = 1.147 ± 0.029 M⊙, to a very high accuracy. We anticipate interferometric microlensing to play an important future role in the mass and distance determination of isolated stellar-mass black holes11-13 in the Galaxy, which cannot be addressed by any other technique. |
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| DOI: | doi:10.1038/s41550-021-01514-w |
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| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext ; Verlag: https://doi.org/10.1038/s41550-021-01514-w |
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| | Volltext: https://www.nature.com/articles/s41550-021-01514-w |
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| | DOI: https://doi.org/10.1038/s41550-021-01514-w |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| Sach-SW: | Compact astrophysical objects |
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| | Transient astrophysical phenomena |
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| K10plus-PPN: | 1799665623 |
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| Verknüpfungen: | → Zeitschrift |
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Microlensing mass measurement from images of rotating gravitational arcs / Cassan, Arnaud [VerfasserIn]; 2022 (Online-Ressource)
