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A candidate microlensing event toward the Galactic bulge

The OGLE team reported a candidate microlensing event toward the Galactic bulge after surveying approximately 650,000 stars. The selected star brightened and returned to its previous level; a single-lens model fit its light curve with an estimated Einstein-radius crossing time of 23.8 ± 0.9 days. This was a separate direction and event from contemporaneous Large Magellanic Cloud searches.

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What is recorded here?

The OGLE team reported a candidate microlensing event toward the Galactic bulge after surveying approximately 650,000 stars. The selected star brightened and returned to its previous level; a single-lens model fit its light curve with an estimated Einstein-radius crossing time of 23.8 ± 0.9 days. This was a separate direction and event from contemporaneous Large Magellanic Cloud searches.

Source-linked catalogue note. A detailed explanatory guide has not yet been prepared for this entry.

Scientific scope

The rising light curve was poorly sampled and the observers could not test achromaticity during the event because V-band coverage was sparse. The paper treats the event as a candidate and cannot exclude an unusual variable star. Its likely approximately 0.3-solar-mass disk-lens estimate is conditional on a population and geometry model, not a direct mass or lens-type measurement. The distinct MACHO and EROS event teams retain their own credits; do not equate their timescale definitions or samples.

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People and systems

A. Udalski; M. Szymański; J. Kałużny; M. Kubiak; W. Krzemiński; M. Mateo; G. W. Preston; B. Paczyński

These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.

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English catalogue narrative

A candidate microlensing event toward the Galactic bulge

The OGLE team reported a candidate microlensing event toward the Galactic bulge after surveying approximately 650,000 stars. The selected star brightened and returned to its previous level; a single-lens model fit its light curve with an estimated Einstein-radius crossing time of 23.8 ± 0.9 days. This was a separate direction and event from contemporaneous Large Magellanic Cloud searches.

Scientific scope

The rising light curve was poorly sampled and the observers could not test achromaticity during the event because V-band coverage was sparse. The paper treats the event as a candidate and cannot exclude an unusual variable star. Its likely approximately 0.3-solar-mass disk-lens estimate is conditional on a population and geometry model, not a direct mass or lens-type measurement. The distinct MACHO and EROS event teams retain their own credits; do not equate their timescale definitions or samples.

Reading status

This is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.

People and systems

A. Udalski; M. Szymański; J. Kałużny; M. Kubiak; W. Krzemiński; M. Mateo; G. W. Preston; B. Paczyński

These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.

Original sources