Results 31 to 40 of about 135 (115)

RTS2—The Remote Telescope System

Advances in Astronomy, Volume 2010, Issue 1, 2010., 2010
RTS2 is an open source observatory manager. It was written from scratch in the C++ language, with portability and modularity in mind. Its driving requirements originated from quick follow‐ups of Gamma Ray Bursts. After some years of development it is now used to carry tasks it was originally not intended to carry.
Petr Kubánek, Lorraine Hanlon
wiley   +1 more source

Gaia20fnr: A binary-lens microlensing event with full orbital motion revealed by four space telescopes

Astronomy & Astrophysics
The microlensing event Gaia20fnr is a long-duration, non-caustic-crossing binary-lens event located at a high Galactic latitude. Triggered by a photometric rise detected by the Gaia space mission, the event was followed up with observations from multiple
Wicker M., Wyrzykowski Ł., Hundertmark M., Rybicki K. A., Zieliński P., Stonkutė E., Gromadzki M., Maskoliūnas M., Ihanec N., Ratajczak M., Bachelet E., Kruszyńska K., Dominik M., Buckley D. A. H., Gezer I., Chené A.-N., Mikołajczyk P., Kotysz K., Majumdar J., Pakštiene E., Zdanavičius J., Čepas V., Jonauskaitė U., Bozza V., Cassan A., Figuera Jaimes R., Rabus M., Rota P., Street R. A., Tsapras Y., Wambsganss J., Awiphan S., Brincat S. M., Budzik Z., Davidson J. W., Dymock R., Galdies C., Godunova V., Hambsch F.-J., Jablonska M., Kowalik P., Kvernadze T., Larma M., Makowska M., Markus Y., Merc J., Michniewicz O., Motylinski M., Popowicz A., Radziwonowicz M., Reichart D., Romanov F. D., Simon A. O., Trzcionkowski P., Wróbel E., Zejmo M., Zola S.   +56 more
doaj   +1 more source

Possible Gravitational Microlensing Events in the Optical Lightcurve of Active Galaxy S5 0716+714

The Astrophysical Journal, 2023
A well-known active galaxy of the blazar type, S5 0716+714, is characterized by a particularly high-variability duty cycle on short timescales at optical frequencies.
D. Ł. Król, Ł. Stawarz, J. Krzesinski, C. C. Cheung   +3 more
doaj   +1 more source

DISTINGUISHING BETWEEN PLANETARY AND BINARY INTERPRETATIONS OF MICROLENSING CENTRAL PERTURBATIONS UNDER THE SEVERE FINITE-SOURCE EFFECT [PDF]

The Astrophysical Journal, 2008
4 pages, 3 ...
openaire   +2 more sources

Incorporating physical source parameters into microlensing modeling

Astronomy & Astrophysics
Modeling of complex microlensing events suffers from many difficult-to-disentangle degeneracies, especially for a source’s orbital motion in a binary system. This is known as the xallarap effect. To address the degeneracies inherent in xallarap modeling,
Mróz Mateusz J., Poleski Radosław, Udalski Andrzej, Skowron Jan, Pietrukowicz Paweł, Szymański Michał K., Mróz Przemek, Gromadzki Mariusz, Iwanek Patryk, Kozłowski Szymon, Ratajczak Milena, Rybicki Krzysztof A., Skowron Dorota M., Soszyński Igor, Ulaczyk Krzysztof, Wrona Marcin, Budzik Zofia   +16 more
doaj   +1 more source

Modeling Binary Lenses and Sources with the BAGLE Python Package

The Astrophysical Journal
Gravitational microlensing is a powerful tool that can be used to find and measure the mass of isolated and dark compact objects. In many microlensing events, the lens, the source, or both may be binary systems.
T. Dex Bhadra, J. R. Lu, Natasha S. Abrams, Andrew Scharf, Edward Broadberry, Casey Lam, Macy J. Huston   +6 more
doaj   +1 more source

Casting Light on Degeneracies: A Comprehensive Study of Lightcurve Variations in Microlensing Events OGLE-2017-BLG-0103 and OGLE-2017-BLG-0192

The Astronomical Journal
This study investigates orbital parallax in gravitational microlensing events, focusing on OGLE-2017-BLG-0103 and OGLE-2017-BLG-0192. For events with timescales ≤60 days, a Jerk-Parallax degeneracy arises due to high Jerk velocity ( $\tilde{{v}_{j ...
Sarang Shah
doaj   +1 more source

Investigating the Binary Source Degeneracy for Wide-orbit Planets

The Astronomical Journal
Wide-orbit planets are particularly sensitive to detection by the Roman Galactic Bulge Time Domain Survey (GBTDS). This study investigates the degeneracy of these events with binary sources, focusing on how observation cadence affects the resolution of ...
Parisa Sangtarash, Jennifer C. Yee
doaj   +1 more source

The BAGLE Python Package for Bayesian Analysis of Gravitational Lensing Events

The Astronomical Journal
We present the open-source Python package, Bayesian Analysis of Gravitational Lensing Events (BAGLE), which enables modeling and joint fitting of photometric and astrometric data sets. We describe the model parameterizations and present the equations for
J. R. Lu, Michael Medford, Casey Y. Lam, T. Dex Bhadra, Macy J. Huston, Natasha S. Abrams, Edward Broadberry, Jeff Chen, Sean K. Terry, Nijaid Arredondo, Andrew Scharf, Raphael A. P. Oliveira   +11 more
doaj   +1 more source

Rate of Caustic-crossing Microlensing Events in Stellar Binary Lenses with Significant Orbital Motion

The Astrophysical Journal
Binary lens microlensing events in which the source crosses a caustic produce sharp, distinctive magnification peaks and can therefore be readily identified.
Arjun Murlidhar, B. Scott Gaudi, Todd. A. Thompson   +2 more
doaj   +1 more source