Astrometry-only detection of microlensing events with Gaia
Methods. We generated mock Gaia observations for different magnitudes, different numbers of Gaia visits, and events extending beyond Gaia’s observational run. We applied GAME Filter to these datasets and validated its performance. We also assessed the rate of false positives involving binary astrome...
Gespeichert in:
| Hauptverfasser: | , , , , , , , , , |
|---|---|
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
04 July 2025
|
| In: |
Astronomy and astrophysics
Year: 2025, Jahrgang: 699, Pages: 1-14 |
| ISSN: | 1432-0746 |
| DOI: | 10.1051/0004-6361/202453525 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1051/0004-6361/202453525 Verlag, kostenfrei, Volltext: https://www.aanda.org/10.1051/0004-6361/202453525 
|
| Verfasserangaben: | T. Jankovič, A. Gomboc, Ł. Wyrzykowski, U. Kostić, M. Karlica, M. Larma, T. Petrushevska, M. Bronikowski, M. Jabłońska, and Z. Kaczmarek |
MARC
| LEADER | 00000naa a2200000 c 4500 | ||
|---|---|---|---|
| 001 | 1949763358 | ||
| 003 | DE-627 | ||
| 005 | 20260120125342.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 260120s2025 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1051/0004-6361/202453525 |2 doi | |
| 035 | |a (DE-627)1949763358 | ||
| 035 | |a (DE-599)KXP1949763358 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rda | ||
| 041 | |a eng | ||
| 084 | |a 29 |2 sdnb | ||
| 100 | 1 | |a Jankovič, Taj |e VerfasserIn |0 (DE-588)1387248472 |0 (DE-627)1949763994 |4 aut | |
| 245 | 1 | 0 | |a Astrometry-only detection of microlensing events with Gaia |c T. Jankovič, A. Gomboc, Ł. Wyrzykowski, U. Kostić, M. Karlica, M. Larma, T. Petrushevska, M. Bronikowski, M. Jabłońska, and Z. Kaczmarek |
| 264 | 1 | |c 04 July 2025 | |
| 300 | |a 14 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Gesehen am 20.01.2026 | ||
| 520 | |a Methods. We generated mock Gaia observations for different magnitudes, different numbers of Gaia visits, and events extending beyond Gaia’s observational run. We applied GAME Filter to these datasets and validated its performance. We also assessed the rate of false positives involving binary astrometric systems misidentified as microlensing events. - Results. GAME Filter successfully recovers microlensing parameters for strong events. Parameters are more difficult to recover for short events and those extending beyond Gaia’s run, where only a fraction of the events are observed. The astrometric effect breaks the degeneracy in the microlensing parallax present in photometric microlensing. For fainter sources, the observed signal weakens, reducing recovered events and increasing parameter errors. However, even for Gaia G-band magnitude 19, the parameters can be recovered for Einstein radii ≳2 mas. Observing regions with varying numbers of Gaia visits has a minimal impact on filter accuracy when the number of visits is ≳90. Additionally, even if the peak of a microlensing event lies outside Gaia’s run, microlensing parameters can still be recovered. GAME filter characterises lenses with astrometry-only data for lens masses ranging from approximately 1-20 M⊙ and distances of up to ≈6 kpc. - Conclusions. GAME Filter reveals the astrometric potential in microlensing events. Our results indicate that astrometric data can enhance photometric detections and refine constraints on microlensing parameters. | ||
| 700 | 1 | |a Gomboc, A. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Wyrzykowski, Ł. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Kostić, U. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Karlica, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Larma, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Petrushevska, T. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Bronikowski, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Jabłońska, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Kaczmarek, Zofia |e VerfasserIn |0 (DE-588)1334102023 |0 (DE-627)1892256746 |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Astronomy and astrophysics |d Les Ulis : EDP Sciences, 1969 |g 699(2025) vom: Juli, Artikel-ID A156, Seite 1-14 |h Online-Ressource |w (DE-627)253390222 |w (DE-600)1458466-9 |w (DE-576)072283351 |x 1432-0746 |7 nnas |a Astrometry-only detection of microlensing events with Gaia |
| 773 | 1 | 8 | |g volume:699 |g year:2025 |g month:07 |g elocationid:A156 |g pages:1-14 |g extent:14 |a Astrometry-only detection of microlensing events with Gaia |
| 856 | 4 | 0 | |u https://doi.org/10.1051/0004-6361/202453525 |x Verlag |x Resolving-System |z kostenfrei |3 Volltext |7 0 |
| 856 | 4 | 0 | |u https://www.aanda.org/10.1051/0004-6361/202453525 |x Verlag |z kostenfrei |3 Volltext |7 0 |
| 951 | |a AR | ||
| 992 | |a 20260120 | ||
| 993 | |a Article | ||
| 994 | |a 2025 | ||
| 998 | |g 1334102023 |a Kaczmarek, Zofia |m 1334102023:Kaczmarek, Zofia |d 700000 |d 714000 |d 714100 |d 130000 |e 700000PK1334102023 |e 714000PK1334102023 |e 714100PK1334102023 |e 130000PK1334102023 |k 0/700000/ |k 1/700000/714000/ |k 2/700000/714000/714100/ |k 0/130000/ |p 10 |y j | ||
| 999 | |a KXP-PPN1949763358 |e 4855144525 | ||
| BIB | |a Y | ||
| SER | |a journal | ||
| JSO | |a {"name":{"displayForm":["T. Jankovič, A. Gomboc, Ł. Wyrzykowski, U. Kostić, M. Karlica, M. Larma, T. Petrushevska, M. Bronikowski, M. Jabłońska, and Z. Kaczmarek"]},"language":["eng"],"type":{"media":"Online-Ressource","bibl":"article-journal"},"recId":"1949763358","title":[{"title":"Astrometry-only detection of microlensing events with Gaia","title_sort":"Astrometry-only detection of microlensing events with Gaia"}],"origin":[{"dateIssuedKey":"2025","dateIssuedDisp":"04 July 2025"}],"id":{"eki":["1949763358"],"doi":["10.1051/0004-6361/202453525"]},"relHost":[{"language":["eng"],"type":{"media":"Online-Ressource","bibl":"periodical"},"corporate":[{"role":"isb","display":"European Southern Observatory","roleDisplay":"Herausgebendes Organ"}],"pubHistory":["1.1969 -"],"part":{"year":"2025","extent":"14","pages":"1-14","text":"699(2025) vom: Juli, Artikel-ID A156, Seite 1-14","volume":"699"},"name":{"displayForm":["European Southern Observatory (ESO)"]},"title":[{"title":"Astronomy and astrophysics","title_sort":"Astronomy and astrophysics","subtitle":"an international weekly journal"}],"disp":"Astrometry-only detection of microlensing events with GaiaAstronomy and astrophysics","recId":"253390222","titleAlt":[{"title":"Astronomy & astrophysics"},{"title":"a European journal"}],"id":{"eki":["253390222"],"issn":["1432-0746"],"zdb":["1458466-9"]},"origin":[{"publisher":"EDP Sciences ; Springer","dateIssuedKey":"1969","dateIssuedDisp":"1969-","publisherPlace":"Les Ulis ; Berlin ; Heidelberg"}],"note":["Gesehen am 21.06.2024","Erscheint 36mal jährlich in 12 Bänden zu je 3 Ausgaben","Fortsetzung der Druck-Ausgabe"],"physDesc":[{"extent":"Online-Ressource"}]}],"physDesc":[{"extent":"14 S."}],"note":["Gesehen am 20.01.2026"],"person":[{"given":"Taj","role":"aut","display":"Jankovič, Taj","roleDisplay":"VerfasserIn","family":"Jankovič"},{"roleDisplay":"VerfasserIn","family":"Gomboc","given":"A.","display":"Gomboc, A.","role":"aut"},{"roleDisplay":"VerfasserIn","family":"Wyrzykowski","given":"Ł.","display":"Wyrzykowski, Ł.","role":"aut"},{"roleDisplay":"VerfasserIn","family":"Kostić","role":"aut","display":"Kostić, U.","given":"U."},{"roleDisplay":"VerfasserIn","family":"Karlica","given":"M.","role":"aut","display":"Karlica, M."},{"given":"M.","role":"aut","display":"Larma, M.","roleDisplay":"VerfasserIn","family":"Larma"},{"role":"aut","display":"Petrushevska, T.","given":"T.","roleDisplay":"VerfasserIn","family":"Petrushevska"},{"role":"aut","display":"Bronikowski, M.","given":"M.","family":"Bronikowski","roleDisplay":"VerfasserIn"},{"family":"Jabłońska","roleDisplay":"VerfasserIn","display":"Jabłońska, M.","role":"aut","given":"M."},{"given":"Zofia","role":"aut","display":"Kaczmarek, Zofia","family":"Kaczmarek","roleDisplay":"VerfasserIn"}]} | ||
| SRT | |a JANKOVICTAASTROMETRY0420 | ||