Search Results - "Koz owski, Szymon"
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REVISITING STOCHASTIC VARIABILITY OF AGNs WITH STRUCTURE FUNCTIONS
Published in The Astrophysical journal (01-08-2016)“…ABSTRACT Discrepancies between reported structure function (SF) slopes and their overall flatness as compared to the expectations from the damped random walk…”
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A Method to Measure the Unbiased Decorrelation Timescale of the AGN Variable Signal from Structure Functions
Published in The Astrophysical journal (01-02-2017)“…A simple, model-independent method to quantify the stochastic variability of active galactic nuclei (AGNs) is the structure function (SF) analysis. If the SF…”
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Erratum: "Revisiting Stochastic Variability of AGNs with Structure Functions" (2016, ApJ, 826, 118)
Published in The Astrophysical journal (01-10-2017)Get full text
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The Proper Motion Field of the Small Magellanic Cloud: Kinematic Evidence for Its Tidal Disruption
Published in The Astrophysical journal (01-09-2018)“…We present a new measurement of the systemic proper motion of the Small Magellanic Cloud (SMC), based on an expanded set of 30 fields containing background…”
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APPLICATION OF STOCHASTIC MODELING TO ANALYSIS OF PHOTOMETRIC REVERBERATION MAPPING DATA
Published in The Astrophysical journal (10-03-2016)“…ABSTRACT We use both simulated and real quasar light curves to explore modeling photometric reverberation-mapping (RM) data as a stochastic process. We do this…”
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Time Delay Measurement of Mg ii Line in CTS C30.10 with SALT
Published in The Astrophysical journal (20-07-2019)“…We report 6 yr monitoring of distant bright quasar CTS C30.10 (z = 0.90052) with the Southern African Large Telescope. We measured the rest-frame time lag of…”
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Quasar Main Sequence in the UV Plane
Published in The Astrophysical journal (01-09-2020)“…Active galaxies form a clear pattern in the optical plane showing the correlation between the FWHM of the Hβ line and the ratio of the equivalent width (EW) of…”
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QUASAR VARIABILITY IN THE MID-INFRARED
Published in The Astrophysical journal (01-02-2016)“…ABSTRACT The Decadal IRAC Boötes Survey is a mid-IR variability survey of the ∼9 sq. deg. of the NDWFS Boötes Field and extends the time baseline of its…”
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Identification of Blazar Candidates behind Small and Large Magellanic Clouds
Published in The Astrophysical journal (10-11-2018)“…We report the identification of blazar candidates behind the Magellanic Clouds. The objects were selected from the Magellanic Quasars Survey (MQS), which…”
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OGLE-ing the Magellanic System: Cepheids in the Bridge Draft version prepared on 2019 December 5
Published in The Astrophysical journal (22-01-2020)“…We present a detailed analysis of the Magellanic Bridge Cepheid sample constructed using the Optical Gravitational Lensing Experiment Collection of Variable…”
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OGLE-ing the Magellanic System: RR Lyrae Stars in the Bridge Draft version prepared on 2019 December 5
Published in The Astrophysical journal (22-01-2020)“…We use the extended and updated Optical Gravitational Lensing Experiment (OGLE) Collection of Variable Stars to thoroughly analyze the distribution of RR Lyrae…”
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The Late-type Eclipsing Binaries in the Large Magellanic Cloud: Catalog of Fundamental Physical Parameters
Published in The Astrophysical journal (10-06-2018)“…We present a determination of the precise fundamental physical parameters of 20 detached, double-lined, eclipsing binary stars in the Large Magellanic Cloud…”
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OGLE-2014-BLG-0962 and a Comparison of Galactic Model Priors to Microlensing Data
Published in The Astrophysical journal (01-03-2019)“…OGLE-2014-BLG-0962 (OB140962) is a stellar binary microlensing event that was well covered by observations from the Spitzer satellite as well as ground-based…”
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Spitzer Microlensing of MOA-2016-BLG-231L: A Counter-rotating Brown Dwarf Binary in the Galactic Disk
Published in The Astrophysical journal (01-02-2019)“…We analyze the binary microlensing event MOA-2016-BLG-231, which was observed from the ground and from Spitzer. The lens is composed of very-low-mass brown…”
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Discovery of Two Quasars at z = 5 from the OGLE Survey
Published in The Astrophysical journal (20-06-2019)“…We used Optical Gravitational Lensing Experiment (OGLE-IV) deep (stacked) images (V 23 mag, I 23 mag at 3 ) of the Magellanic System, encompassing an area of…”
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OGLE-2018-BLG-0022: First Prediction of an Astrometric Microlensing Signal from a Photometric Microlensing Event
Published in The Astrophysical journal (01-05-2019)“…In this work, we present the analysis of the binary microlensing event OGLE-2018-BLG-0022 that is detected toward the Galactic bulge field. The dense and…”
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OGLE-2016-BLG-0156: Microlensing Event with Pronounced Microlens-parallax Effects Yielding a Precise Lens Mass Measurement
Published in The Astrophysical journal (20-02-2019)“…We analyze the gravitational binary-lensing event OGLE-2016-BLG-0156, for which the lensing light curve displays pronounced deviations induced by…”
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THE ARAUCARIA PROJECT: A STUDY OF THE CLASSICAL CEPHEID IN THE ECLIPSING BINARY SYSTEM OGLE LMC562.05.9009 IN THE LARGE MAGELLANIC CLOUD This research is based on observations obtained with the ESO VLT, 3.6 m and NTT telescopes for Programmes 092.D-0295(A), 091.D-0393(A), 089.D-0330(A), 088.D-0447(A), 086.D-0103(A) and 085.D-0398(A)), and with the Magellan Clay and Warsaw telescopes at Las Campanas Observatory
Published in The Astrophysical journal (03-12-2015)“…ABSTRACT We present a detailed study of the classical Cepheid in the double-lined, highly eccentric eclipsing binary system OGLE-LMC562.05.9009. The Cepheid is…”
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