A5042238282- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Gamma-ray bursts and supernovae
- Astrophysics and Star Formation Studies
- Lung Cancer Diagnosis and Treatment
- Cardiac, Anesthesia and Surgical Outcomes
- Pulsars and Gravitational Waves Research
- Gastroesophageal reflux and treatments
- Dysphagia Assessment and Management
- Esophageal and GI Pathology
- Diverticular Disease and Complications
- Abdominal vascular conditions and treatments
- Radiation Dose and Imaging
- Trauma and Emergency Care Studies
- Geophysics and Gravity Measurements
- Hip and Femur Fractures
- Biotin and Related Studies
- Advances in Oncology and Radiotherapy
- Advanced Radiotherapy Techniques
- Tracheal and airway disorders
- Medical Imaging and Pathology Studies
- Myasthenia Gravis and Thymoma
- Colorectal Cancer Surgical Treatments
- Abdominal Trauma and Injuries
- High-pressure geophysics and materials
University of Toronto
2021-2024
University of British Columbia
2021
University of Calgary
2007-2018
Foothills Medical Centre
2014
Continued observations of the Double Pulsar, PSR J0737-3039A/B, consisting two radio pulsars (A and B) that orbit each other with a period 2.45hr in mildly eccentric (e=0.088) binary system, have led to large improvements measurement relativistic effects this system. With 16-yr data span, results enable precision tests theories gravity for strongly self-gravitating bodies also reveal new been expected but are now observed first time. These include light propagation strong gravitational...
ABSTRACT This work presents the Globular cluster Extra-tidal Mock Star (GEMS) catalogue of extra-tidal stars and binaries created via three-body dynamical encounters in globular cores. Using particle-spray code Corespray, we sample $N=50\, 000$ escaped recoil for 159 Galactic clusters. Sky positions, kinematics, stellar properties, escape information are provided all simulated stars. Stellar orbits integrated seven different static time-varying Milky Way gravitational potential models where...
The choice of the optimal surgical approach for repairing paraesophaeal hernias (PEH) is debated. Our objective to evaluate short-term outcomes primary laparoscopic and open repairs PEH performed in Calgary Health Region. A retrospective review all patients undergoing repair between October 1999 February 2005 was performed. outcome measures evaluated included intra-operative parameters post-operative variables, mortality rates, recurrence rates patient satisfaction. total 93 underwent either...
Abstract We have carried out a search for massive white dwarfs (WDs) in the direction of young open star clusters using Gaia DR2 database. The aim this survey was (1) to provide robust data new and previously known high-mass WDs regarding cluster membership, (2) highlight included initial final mass relation (IFMR) that are unlikely members their respective according astrometry, (3) select an unequivocal WD sample could then be compared with host clusters’ turnoff masses. All promising...
ABSTRACT Three-body interactions can eject stars from the core of a globular cluster, causing them to enter Galactic halo as extra-tidal stars. While finding is imperative for understanding cluster evolution, connecting isolated field back their birth extremely difficult. In this work, we present new methodology consisting high-dimensional data analysis and particle spray code identify any using M3 case study. Using t-Stochastic Neighbour Embedding Uniform Manifold Approximation Projection...
ABSTRACT It has been argued that heavy binaries composed of neutron stars (NSs) and millisecond pulsars (MSPs) can end up in the outskirts star clusters via an interaction with a massive black hole (BH) binary expelling them from core. We argue here, however, this mechanism will rarely account for such observed objects. Only primary masses ≲100 M⊙ narrow range orbital separations should BH–BH be both dynamically hard produce sufficiently low recoil velocity to retain NS cluster. Hence, BH...
Abstract Close binary systems are the progenitors to both Type Ia supernovae and compact object mergers that can be detected via gravitational waves. To achieve a with small radial separation, it is believed system likely undergoes common envelope (CE) evolution. Despite its importance, CE evolution may one of largest uncertainties in due combination computational challenges lack observed benchmarks where post-CE pre-CE conditions known. Identifying star clusters partially circumvent this...