Savannah Jacklin
A5071121101- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Gamma-ray bursts and supernovae
- Astro and Planetary Science
- Astrophysics and Star Formation Studies
- Astronomical Observations and Instrumentation
- Calibration and Measurement Techniques
- Technology Assessment and Management
- Photocathodes and Microchannel Plates
- Health and Medical Research Impacts
- Infrared Target Detection Methodologies
- Doctoral Education Challenges and Solutions
- SAS software applications and methods
- Space Exploration and Technology
- Academic Writing and Publishing
- History and Developments in Astronomy
- Antibiotic Use and Resistance
- Scientific Research and Discoveries
- Space Science and Extraterrestrial Life
- Galaxies: Formation, Evolution, Phenomena
- COVID-19 Impact on Reproduction
- Scientific Computing and Data Management
- COVID-19 Clinical Research Studies
- Computational Physics and Python Applications
- Impact of Light on Environment and Health
Vanderbilt University
2015-2024
Keele University
2023
Fisk University
2017
Villanova University
2015
We complete the analysis of all 2018 prime-field microlensing planets identified by Korea Microlensing Telescope Network (KMTNet) Anomaly Finder. Among ten previously unpublished events with clear planetary solutions, eight are either unambiguously or very likely to be in nature: OGLE-2018-BLG-1126, KMT-2018-BLG-2004, OGLE-2018-BLG-1647, OGLE-2018-BLG-1367, OGLE-2018-BLG-1544, OGLE-2018-BLG-0932, OGLE-2018-BLG-1212, and KMT-2018-BLG-2718. Combined four published new Finder 12 (or...
We report the discovery of OGLE-2016-BLG-1190Lb, which is likely to be first Spitzer microlensing planet in Galactic bulge/bar, an assignation that can confirmed by two epochs high-resolution imaging combined source-lens baseline object. The planet's mass M_p= 13.4+-0.9 M_J places it right at deuterium burning limit, i.e., conventional boundary between "planets" and "brown dwarfs". Its existence raises question whether such objects are really (formed within disks their hosts) or "failed...
We present microlensing planet OGLE-2017-BLG-0173Lb, with planet-host mass ratio either $q\simeq 2.5\times 10^{-5}$ or 6.5\times 10^{-5}$, the lowest among ever detected. The planetary perturbation is strongly detected, $\Delta\chi^2\sim 10,000$, because it arises from a bright (therefore, large) source passing over and enveloping caustic: so-called "Hollywood" event. factor $\sim 2.5$ offset in $q$ of previously unrecognized discrete degeneracy between Hollywood events which caustic fully...
We present the analysis of OGLE-2016-BLG-0613, for which lensing light curve appears to be that a typical binary-lens event with two caustic spikes but discontinuous feature on trough between spikes. find was produced by planetary companion binary lens. 4 degenerate triple-lens solution classes, each composed pair solutions according well-known wide/close degeneracy. One these classes is excluded due its relatively poor fit. For remaining three pairs solutions, most-likely primary mass about...
Abstract We complete the analysis of planetary candidates found by KMT AnomalyFinder for 2017 prime fields that cover ∼13 deg 2 . report three unambiguous planets: OGLE-2017-BLG-0640, OGLE-2017-BLG-1275, and OGLE-2017-BLG-1237. The first two these were not previously identified, while last was published due to technical complications induced a nearby variable. further fourth anomalous event, recognized OGLE-2017-BLG-1777, is very likely be planetary, although its light curve requires...
The Large Synoptic Survey Telescope (LSST) will photometrically monitor approximately 1 billion stars for ten years. resulting light curves can be used to detect transiting exoplanets. In particular, as demonstrated by Lund et al. (2015), LSST probe stellar populations currently undersampled in most exoplanet transit surveys, including out extragalactic distances. this paper we test the efficiency of box-fitting least-squares (BLS) algorithm accurately recovering periods exoplanets using...
Abstract The Large Synoptic Survey Telescope (LSST) will generate light curves for approximately 1 billion stars. Our previous work has demonstrated that, by the end of LSST 10-year mission, large numbers transiting exoplanetary systems could be recovered using “deep-drilling” cadence. Here, we extend our to examine how recoverability planets over a range orbital periods and radii evolves per year operation. As specific example systems, consider hot Jupiters orbiting solar-type stars...
We report a multiplanetary system found from the analysis of microlensing event OGLE-2018-BLG-1011, for which light curve exhibits double-bump anomaly around peak. find that cannot be fully explained by binary-lens or binary-source interpretations and its description requires introduction an additional lens component. The 3L1S (3 components single source) modeling yields three sets solutions, in one set solutions indicates is planetary binary, while other two imply system. By investigating...
Abstract We report the discovery of a Spitzer microlensing planet OGLE-2018-BLG-0596Lb, with preferred planet-host mass ratio q ∼ 2 × 10 −4 . The planetary signal, which is characterized by short (∼1 day) “bump” on rising side lensing light curve, was densely covered ground-based surveys. find that signal can be explained bright source fully envelops caustic, i.e., “Hollywood” geometry. Combined proper motion measured from Gaia , satellite parallax measurement makes it possible to precisely...
Abstract We report the discovery of a giant planet in event UKIRT-2017-BLG-001, detected by United Kingdom Infrared Telescope (UKIRT) microlensing survey. The mass ratio between and its host is , about 1.5 times Jupiter/Sun ratio. lies 0.°35 from Galactic center suffers high extinction A K = 1.68. Therefore, it could be only near-infrared (NIR) field also large spatial differential extinction, which makes difficult to estimate source properties required derive angular Einstein radius....
Microlensing can access planet populations that no other method probe: cold wide-orbit planets beyond the snow line, in both Galactic bulge and disk, free floating (FFPs). The demographics of each population will provide unique constraints on formation. Over past 5 years, U.S. microlensing campaigns with Spitzer UKIRT have provided a powerful complement to international ground-based surveys, major breakthroughs parallax measurements probing new regions Galaxy. scientific vitality these...
The United Kingdom Infrared Telescope (UKIRT) observatory has been transferred to the ownership of University Hawaii (UH) and is now being managed by UH. We have established partnerships with several organizations utilize UKIRT for science projects support its operation. Our main partners are U.S. Naval Observatory (USNO), East Asian (EAO), microlensing team (JPL/IPAC/OSU/Vanderbilt). USNO working on deep northern hemisphere surveys in H K bands running a monitoring campaign Galactic bulge....
We complete the analysis of planetary candidates found by KMT AnomalyFinder for 2017 prime fields that cover $\sim 13\,{\rm deg}^2$. report 3 unambiguous planets: OGLE-2017-BLG-0640, OGLE-2017-BLG-1275, and OGLE-2017-BLG-1237. The first two these were not previously identified, while last was published due to technical complications induced a nearby variable. further fourth anomalous event, recognized OGLE-2017-BLG-1777, is very likely be planetary, although its light curve requires...
Abstract Introduction Northern Ireland’s community pharmacies have contributed substantially to the COVID-19 response, with over 436,000 vaccines administered since March 2021. Community pharmacy has an established role across UK in delivering influenza vaccination programmes. Research found that can increase vaccine availability and uptake is highly valued by patients1, although European studies demonstrated high satisfaction services2, further are required applicable a context. Aim This...
We present the analysis of a binary microlensing event KMT-2016-BLG-2052, for which lensing-induced brightening source star lasted 2 seasons. determine lens mass from combined measurements microlens parallax $\pie$ and angular Einstein radius $\thetae$. The measured indicates that is composed M dwarfs with masses $M_1\sim 0.34~M_\odot$ $M_2\sim 0.17~M_\odot$. relative lens-source proper motion $\mu\sim 3.9~{\rm mas}~{\rm yr}^{-1}$ smaller than $\sim 5~{\rm typical Galactic lensing events,...
[abridged] WFIRST is uniquely capable of finding planets with masses as small Mars at separations comparable to Jupiter, i.e., beyond the current ice lines their stars. These fall between close-in found by Kepler and wide separation gas giants seen direct imaging inferred from ALMA observations. Furthermore, smallest can detect are smaller than probed RV Gaia separations. Interpreting planet populations infer underlying formation evolutionary processes requires combining results multiple...