A5047302063- Stellar, planetary, and galactic studies
- Astro and Planetary Science
- Astrophysics and Star Formation Studies
- Astronomy and Astrophysical Research
- Network Security and Intrusion Detection
- Spam and Phishing Detection
- Software System Performance and Reliability
- Hate Speech and Cyberbullying Detection
- Gamma-ray bursts and supernovae
- Service-Oriented Architecture and Web Services
- Planetary Science and Exploration
- Authorship Attribution and Profiling
- Astronomical Observations and Instrumentation
- Maritime and Coastal Archaeology
- Space Exploration and Technology
- Data-Driven Disease Surveillance
- Misinformation and Its Impacts
- Oil Palm Production and Sustainability
- Anomaly Detection Techniques and Applications
- Software Reliability and Analysis Research
- Law, logistics, and international trade
- Semantic Web and Ontologies
MIT Lincoln Laboratory
2015-2021
Massachusetts Institute of Technology
2016-2017
University of Hawaii System
2013-2016
University of Hawaiʻi at Mānoa
2015
Woodlawn School
2015
Vassar College
2012
We have used Pan-STARRS1 to discover an extremely red late-L dwarf, which has (J-K)_MKO = 2.84 and (J-K)_2MASS 2.78, making it the reddest known field dwarf second only 2MASS J1207-39b among substellar companions. Near-IR spectroscopy shows a spectral type of L7 reveals triangular H-band continuum weak alkali (K I Na I) lines, hallmarks low surface gravity. astrometry from Hawaii Infrared Parallax Program gives distance 24.6+/-1.4 pc indicates much fainter J-band absolute magnitude than L...
We report here on the discovery of stellar occultations, observed with Kepler, that recur periodically at 15.685 hour intervals, but which vary in depth from a maximum 1.3% to minimum can be less than 0.2%. The star is apparently being occulted KIC 12557548, K dwarf T_eff = 4400 and V 16. Because eclipse depths are highly variable, they cannot due solely transits single planet fixed size. discuss dismiss scenario involving binary giant whose mutual orbit plane precesses, bringing one planets...
We report the discovery of an Earth-sized planet ($1.16\pm 0.19 R_\oplus$) in 8.5-hour orbit around a late G-type star (KIC 8435766, Kepler-78). The object was identified search for short-period planets {\it Kepler} database and confirmed to be transiting (as opposed eclipsing stellar system) through absence ellipsoidal light variations or substantial radial-velocity variations. unusually short orbital period relative brightness host ($m_{\rm Kep}$ = 11.5) enable robust detections changing...
We present the results of a survey aimed at discovering and studying transiting planets with orbital periods shorter than one day (ultra--short-period, or USP, planets), using data from {\em Kepler} spacecraft. computed Fourier transforms photometric time series for all 200,000 target stars, detected transit signals based on presence regularly spaced sharp peaks in spectrum. list 106 USP candidates, which 18 have not previously been described literature. In addition, among objects we...
Substellar members of young ($\lesssim$150 Myr) moving groups are valuable benchmarks to empirically define brown dwarf evolution with age and study the low-mass end initial mass function. We have combined Pan-STARRS1 (PS1) proper motions optical$-$IR photometry from PS1, 2MASS $\textit{WISE}$ search for substellar AB Dor Moving Group within $\approx$50 pc spectral types late-M early-L, corresponding masses down $\approx$30 M$_{Jup}$ at group ($\approx$125 Myr). Including both allows us...
We present optical and near-infrared adaptive optics (AO) imaging spectroscopy of 13 ultracool (>M6) companions to late-type stars (K7–M4.5), most which have recently been identified as candidate members nearby young moving groups (YMGs; 8–120 Myr) in the literature. Three these are new our AO survey, two others confirmed be comoving with their host for first time. The inferred masses (∼10–100 MJup) highly sensitive ages primary stars; therefore we critically examine kinematic spectroscopic...
Abstract We present the discovery of eight young M7–L2 dwarfs in Taurus star-forming region and Scorpius–Centaurus OB Association, serendipitously found during a wide-field search for L/T transition using Pan-STARRS1 (optical) WISE (mid-infrared) photometry. identify PSO J060.3200+25.9644 (near-infrared spectral type L1) J077.1033+24.3809 (L2) as new members based on their vl-g gravity classifications, consistency photometry proper motions with previously known objects, low probability...
Spear phishing is a widespread concern in the modern network security landscape, but there are few metrics that measure extent to which reconnaissance performed on targets. emails closely match expectations of recipient, based details their experiences and interests, making them popular propagation vector for harmful malware. In this work we use Natural Language Processing techniques investigate specific real-world campaign quantify attributes indicate targeted spear attack. Our data sample...
Abstract The Transiting Exoplanet Survey Satellite (TESS) is a NASA Explorer-class mission designed for finding exoplanets around nearby stars. TESS image data can also serve as valuable resource asteroid and comet detection, including near-Earth objects (NEOs). In order to exploit the moving object detection potential discovery, our team has developed an processing pipeline part of Lincoln Near-Earth Asteroid Research (LINEAR) program, sponsored by NEO Observations Program. LINEAR-TESS...
Spear phishing is a widespread concern in the modern network security landscape, but there are few metrics that measure extent to which reconnaissance performed on targets. emails closely match expectations of recipient, based details their experiences and interests, making them popular propagation vector for harmful malware. In this work we use Natural Language Processing techniques investigate specific real-world campaign quantify attributes indicate targeted spear attack. Our data sample...
The role of cyber forensics in criminal investigations has greatly increased recent years due to the wealth data that is collected and available investigators. Physical also experienced a volume fidelity revolution advances methods for DNA trace evidence analysis. Key extracting insight ability correlate across multi-modal data, which depends critically on identifying touch-point connecting separate streams. Separate sources may be connected because they refer same individual, entity or...
We introduce Active Dependency Mapping (ADM), a method for establishing dependency relations among set of interdependent services. The approach is to artificially degrade network performance infer which assets on the support particular process. Artificial degradation environment could be transparent users; run continuously it identify dependencies that are rare or occur only at certain timescales. A useful byproduct this analysis quantitative assessment resilience and robustness system. This...