A5035879946- Gamma-ray bursts and supernovae
- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- SAS software applications and methods
- Astrophysical Phenomena and Observations
- Astro and Planetary Science
- Astronomical Observations and Instrumentation
- Astrophysics and Star Formation Studies
- Pulsars and Gravitational Waves Research
- Spinal Fractures and Fixation Techniques
- Astrophysics and Cosmic Phenomena
- Spine and Intervertebral Disc Pathology
- High-pressure geophysics and materials
- Sarcoma Diagnosis and Treatment
- Pelvic and Acetabular Injuries
- Bone Tumor Diagnosis and Treatments
- Management of metastatic bone disease
- Particle Accelerators and Free-Electron Lasers
- Obesity, Physical Activity, Diet
- Chronic Obstructive Pulmonary Disease (COPD) Research
- X-ray Spectroscopy and Fluorescence Analysis
- Dietetics, Nutrition, and Education
- Solar and Space Plasma Dynamics
- Mechanics and Biomechanics Studies
- Adaptive optics and wavefront sensing
Massachusetts Institute of Technology
2014-2024
RJ Lee Group (United States)
2016-2023
Marywood University
2006-2022
Kavli Institute for Particle Astrophysics and Cosmology
2006-2019
Vassar College
2003-2017
American University
2012
Maricopa County Community College District
2011
Authorised Association Consortium
2009-2011
American Academy of Orthopaedic Surgeons
2010
Sinai Hospital
2002-2009
The Transiting Exoplanet Survey Satellite (TESS) will search for planets transiting bright and nearby stars. TESS has been selected by NASA launch in 2017 as an Astrophysics Explorer mission. spacecraft be placed into a highly elliptical 13.7-day orbit around the Earth. During its two-year mission, employ four wide-field optical CCD cameras to monitor at least 200,000 main-sequence dwarf stars with I = 4-13 temporary drops brightness caused planetary transits. Each star observed interval...
The Transiting Exoplanet Survey Satellite (TESS ) will search for planets transiting bright and nearby stars. TESS has been selected by NASA launch in 2017 as an Astrophysics Explorer mission. spacecraft be placed into a highly elliptical 13.7-day orbit around the Earth. During its two-year mission, employ four wide-field optical CCD cameras to monitor at least 200,000 main-sequence dwarf stars with I<sub>C</sub> (approximately less than) 13 temporary drops brightness caused planetary...
The all-sky monitor on the Rossi X-Ray Timing Explorer has been monitoring sky in 1.5-12 keV band since late February. instrument consists of three coded-aperture cameras that can be rotated to view different regions by a motorized drive assembly. Intensities ~100 known sources are obtained via least-squares fits shadow patterns data and compiled form X-ray light curves. Six orbital periodicities four long-term periodicities, all previously known, have detected these Searches for additional...
Fifty-two patients with traumatic spondylolisthesis of the axis were admitted to University Maryland Spinal Injury Center between 1977 and 1982. There fifteen Type-I fractures, twenty-nine Type-II three Type-IIa five Type-III fractures. Associated neurological deficits found in only four patients, although unassociated such as closed head injury seen eleven patients. Thirteen had other fractures cervical spine. stable injuries treated collar protection. Most reduced patient halo traction,...
To explore the relationship between surgical approach and chronic posterior iliac crest donor site pain, 151 bone graft harvests with follow-up periods longer than 1 year were evaluated using a detailed questionnaire clinical visits. There was no difference in incidence of pain performed through primary midline incision versus separate lateral oblique (28 vs 31%). Twice as many sites harvested for reconstructive spinal procedures reported having compared those trauma, regardless used (39...
The Transiting Exoplanet Survey Satellite (TESS) is a NASA-sponsored Explorer mission that will perform wide-field survey for planets transit bright host stars. Here, we predict the properties of transiting TESS detect along with eclipsing binary stars produce false-positive photometric signals. predictions are based on Monte Carlo simulations nearby population stars, occurrence rates derived from Kepler, and models performance sky coverage cameras. We expect find approximately 1700 200,000...
Abstract We perform a study of stellar flares for the 24,809 stars observed with 2 minute cadence during first two months TESS mission. Flares may erode exoplanets’ atmospheres and impact their habitability, but might also trigger genesis life around small stars. provides new sample bright dwarf in our galactic neighborhood, collecting data thousands M dwarfs that host habitable exoplanets. Here, we use an automated search accompanied by visual inspection. Then, public allesfitter code...
Cadaveric study on the biomechanics of osteoporotic vertebral bodies augmented and not with polymethylmethacrylate cement.To determine strength stiffness subjected to compression fractures 1) augmented, 2) unipedicular injection cement, or 3) bipedicular cement.Percutaneous vertebroplasty is a relatively new method managing fractures, but it lacks biomechanical confirmation.Fresh (L2-L5) were harvested from 10 spines (T scores range, -3.7 -8.8) compressed in materials testing machine intact...
We describe and discuss the global properties of 45 gamma-ray bursts (GRBs) observed by HETE-2 during first 3 years its mission, focusing on X-ray flashes (XRFs) X-ray-rich GRBs (XRRs). find that numbers XRFs, XRRs, are comparable, durations sky distributions XRFs XRRs similar to those GRBs. also spectral GRBs, except values peak energy E burst spectrum in νFν, flux Fpeak, fluence SE much smaller (and smaller) than Finally, we all three kinds form a continuum [SE(2-30 keV), SE(30-400) keV]...
The metaphyseal-diaphyseal angle is the created by intersection of a line through transverse plane proximal tibial metaphysis with perpendicular to long axis diaphysis. This represents degree deformity end tibia in patient clinical bowleg and permits early differentiation between infantile vara physiological bowleg, before appearance radiographic changes vara. In twenty-nine thirty affected extremities an initial more than 11.0 degrees, later developed. However, only three fifty-eight...
We present techniques for bridging the gap between idealized inverse covariance weighted quadratic estimation of 21 cm power spectra and real-world challenges presented universally by interferometric observation. By carefully evaluating various estimators adapting our large but incomplete data sets, we develop a robust spectrum framework that preserves so-called "Epoch Reionization (EoR) window" keeps track estimator errors covariances. apply method to observations from 32-tile prototype...
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 a dynamical model of the high mass X-ray binary LMC X-1 based on high-resolution optical spectroscopy and extensive near-infrared photometry. From our new data we find an orbital period P = 3.90917 ± 0.00005 days. refined analysis All Sky Monitor from RXTE 3.9094 0.0008 days, which is consistent with period. A simple Thomson scattering in stellar wind can account for modulation seen light curves. The V − K color star (1.17 0.05) implies AV 2.28 0.06, much larger than previously...
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...
The requirement that a planet must orbit outside of its Roche limit gives lower on the planet's mean density. minimum density depends almost entirely orbital period and is immune to systematic errors in stellar properties. We consider implications this constraint for newly identified class small planets with periods shorter than half day. When radius accurately known, can be used restrict possible combinations iron rock within planet. Applied KOI 1843.03, 0.6 R⊕ shortest known 4.245 hr, ≳ 7...
Abstract We report the detection of a transiting planet around π Men (HD 39091), using data from Transiting Exoplanet Survey Satellite ( TESS ). The solar-type host star is unusually bright V = 5.7) and was already known to Jovian on highly eccentric, 5.7 yr orbit. newly discovered has size 2.04 ± 0.05 R ⊕ an orbital period 6.27 days. Radial-velocity High-Accuracy Planet Searcher Anglo-Australian Telescope/University College London Echelle Spectrograph archives also displays day periodicity,...
The recycling of waste-tire rubber is critical importance since the discarded tires pose serious environmental and health hazards to our society. Here, we report a new application for hard-carbon materials derived from waste-tires as anodes in potassium-ion batteries. sustainable tire-derived carbons show good reversible potassium insertion at relatively high rates. Long-term stability tests exhibit capacities 155 141 mAh g−1 carbon pyrolyzed 1100°C 1600°C, respectively, after 200 cycles...
We report the detection of first circumbinary planet found by TESS. The target, a known eclipsing binary, was observed in sectors 1 through 12 at 30-minute cadence and 4 two-minute cadence. It consists two stars with masses 1.1 MSun 0.3 on slightly eccentric (0.16), 14.6-day orbit, producing prominent primary eclipses shallow secondary eclipses. has radius ~6.9 REarth to make three transits across star roughly equal depths (~0.2%) but different durations -- common signature transiting...
We report the discovery and characterisation of a pair sub-Neptunes transiting bright K-dwarf TOI-1064 (TIC 79748331), initially detected in TESS photometry. To characterise system, we performed retrieved CHEOPS, TESS, ground-based photometry, HARPS high-resolution spectroscopy, Gemini speckle imaging. host star determine $T_{\rm eff, \star}=4734\pm67$ K, $R_{\star}=0.726\pm0.007$ $R_{\odot}$, $M_{\star}=0.748\pm0.032$ $M_{\odot}$. present novel detrending method based on PSF shape-change...
PURPOSE: To determine the imaging characteristics of soft-tissue myxoma, with emphasis on computed tomographic (CT) and magnetic resonance (MR) findings pathologic comparison. MATERIALS AND METHODS: Records 45 pathologically confirmed myxomas in 44 patients were retrospectively reviewed. Patient demographics radiographs (n = 20), bone scintigrams 2), angiograms 3), ultrasonographic (US) 6), CT 14), MR images 33) evaluated by two musculoskeletal radiologists agreement consensus for lesion...