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Articles 181 - 210 of 9199
Full-Text Articles in Physical Sciences and Mathematics
Search For Subsolar-Mass Black Hole Binaries In The Second Part Of Advanced Ligo’S And Advanced Virgo’S Third Observing Run, R. Abbott, H. Abe, F. Acernese, Teviet Creighton, Mario C. Diaz, Francisco Llamas, Soma Mukherjee, Gaukhar Nurbek, Volker Quetschke, Wenhui Wang
Search For Subsolar-Mass Black Hole Binaries In The Second Part Of Advanced Ligo’S And Advanced Virgo’S Third Observing Run, R. Abbott, H. Abe, F. Acernese, Teviet Creighton, Mario C. Diaz, Francisco Llamas, Soma Mukherjee, Gaukhar Nurbek, Volker Quetschke, Wenhui Wang
Physics and Astronomy Faculty Publications and Presentations
We describe a search for gravitational waves from compact binaries with at least one component with mass 0.2 –1.0M⊙ and mass ratio q ≥ 0.1 in Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) and Advanced Virgo data collected between 2019 November 1, 15:00 UTC and 2020 March 27, 17:00 UTC. No signals were detected. The most significant candidate has a false alarm rate of 0.2yr−1 . We estimate the sensitivity of our search over the entirety of Advanced LIGO’s and Advanced Virgo’s third observing run, and present the most stringent limits to date on the merger rate of binary black holes …
Rubin Observatory Lsst Transients And Variable Stars Roadmap, Kelly M. Hambleton, Federica B. Bianco, Rachel Street, Keaton Bell, David Buckley, Melissa Graham, Nina Hernitschek, Michael B. Lund, Elena Mason, Liliana Rivera Sandoval
Rubin Observatory Lsst Transients And Variable Stars Roadmap, Kelly M. Hambleton, Federica B. Bianco, Rachel Street, Keaton Bell, David Buckley, Melissa Graham, Nina Hernitschek, Michael B. Lund, Elena Mason, Liliana Rivera Sandoval
Physics and Astronomy Faculty Publications and Presentations
The Vera C. Rubin Legacy Survey of Space and Time (LSST) holds the potential to revolutionize time domain astrophysics, reaching completely unexplored areas of the Universe and mapping variability time scales from minutes to a decade. To prepare to maximize the potential of the Rubin LSST data for the exploration of the transient and variable Universe, one of the four pillars of Rubin LSST science, the Transient and Variable Stars Science Collaboration, one of the eight Rubin LSST Science Collaborations, has identified research areas of interest and requirements, and paths to enable them. While our roadmap is ever-evolving, this document …
A Review On Antibacterial Activity Of Nanoparticles, Badr-Edine Sadoq, Mohammed Reda Britel, Adel Bouajaj, Ramzi Maâlej, Ahmed Touhami, Marwa Abid, Hanen Douiri, Fakhita Touhami, Amal Maurady
A Review On Antibacterial Activity Of Nanoparticles, Badr-Edine Sadoq, Mohammed Reda Britel, Adel Bouajaj, Ramzi Maâlej, Ahmed Touhami, Marwa Abid, Hanen Douiri, Fakhita Touhami, Amal Maurady
Physics and Astronomy Faculty Publications and Presentations
The increasing resistance of bacteria to antibiotic agents is a main global public health problem. The use of nanoparticles is one of the promising ways to overcome microbial resistance to antimicrobial agents. Metal nanoparticles are increasingly used to target bacterial strains. Advances in nanotechnology, in particular the ability to synthesize nanoparticles of specific size and shape, are likely to lead to the development of new antibacterial agents. The antibacterial activities of nanoparticles are largely influenced by their sizes and large surface area/mass ratio. The antibacterial mechanisms of nanoparticles are poorly understood, but the currently accepted mechanisms include oxidative stress induction, …
Observation And Modelling Of Meter-Class Earth Impacting Asteroids, David L. Clark
Observation And Modelling Of Meter-Class Earth Impacting Asteroids, David L. Clark
Electronic Thesis and Dissertation Repository
Earth is constantly bombarded by solar system objects of a wide variety of sizes, from micron-sized meteoroid stream and sporadic meteor dust, to meter-sized and larger meteoroids observed as fireballs. Fireball event characteristics directly point to the properties and structure of the parent body from which the meteoroid originated. In-atmosphere fireball data paired with in-space observations bring much context to both observations. This thesis centres on three published papers that grew out of my Masters project to identify precovery in-space images of meteoroids first observed as fireballs.
The first article describes the first successful identification of an in-space image of …
Effects Of Spin-Orbit Coupling On Gravitational Waveforms From A Triaxial Nonaligned Neutron Star In A Binary System, Wen-Fan Feng, Tan Liu, Jie-Wen Che, Yan Wang, Soumya D. Mohanty
Effects Of Spin-Orbit Coupling On Gravitational Waveforms From A Triaxial Nonaligned Neutron Star In A Binary System, Wen-Fan Feng, Tan Liu, Jie-Wen Che, Yan Wang, Soumya D. Mohanty
Physics and Astronomy Faculty Publications and Presentations
Spinning neutron stars (NSs) can emit continuous gravitational waves (GWs) that carry a wealth of information about the compact object. If such a signal is detected, it will provide us with new insight into the physical properties of matter under extreme conditions. According to binary population synthesis simulations, future space-based GW detectors, such as LISA and TianQin, can potentially detect some double NSs in tight binaries with orbital periods shorter than 10 minutes. The possibility of a successful directed search for continuous GWs from the spinning NS in such a binary system identified by LISA/TianQin will be significantly increased with …
Search For Gravitational Waves Associated With Fast Radio Bursts Detected By Chime/Frb During The Ligo–Virgo Observing Run O3a, R. Abbott, T. Abbott, F. Acernese, Teviet Creighton, Mario C. Diaz, Francisco Llamas, Soma Mukherjee, Volker Quetschke, Wenhui Wang
Search For Gravitational Waves Associated With Fast Radio Bursts Detected By Chime/Frb During The Ligo–Virgo Observing Run O3a, R. Abbott, T. Abbott, F. Acernese, Teviet Creighton, Mario C. Diaz, Francisco Llamas, Soma Mukherjee, Volker Quetschke, Wenhui Wang
Physics and Astronomy Faculty Publications and Presentations
We search for gravitational-wave (GW) transients associated with fast radio bursts (FRBs) detected by the Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst Project, during the first part of the third observing run of Advanced LIGO and Advanced Virgo (2019 April 1 15:00 UTC–2019 October 1 15:00 UTC). Triggers from 22 FRBs were analyzed with a search that targets both binary neutron star (BNS) and neutron star–black hole (NSBH) mergers. A targeted search for generic GW transients was conducted on 40 FRBs. We find no significant evidence for a GW association in either search. Given the large uncertainties in the …
Wallaby Pre-Pilot Survey: Ultra-Diffuse Galaxies In The Eridanus Supergroup, B-Q For, K. Spekkens, L. Stavely-Smith, K. Bekki, A. Karunakaran, B. Catinella, Bärbel S. Koribalski, K. Lee-Waddell, Juan P. Madrid, C. Murugeshan
Wallaby Pre-Pilot Survey: Ultra-Diffuse Galaxies In The Eridanus Supergroup, B-Q For, K. Spekkens, L. Stavely-Smith, K. Bekki, A. Karunakaran, B. Catinella, Bärbel S. Koribalski, K. Lee-Waddell, Juan P. Madrid, C. Murugeshan
Physics and Astronomy Faculty Publications and Presentations
We present a pilot study of the atomic neutral hydrogen gas (H I) content of ultra-diffuse galaxy (UDG) candidates. In this paper, we use the pre-pilot Eridanus field data from the Widefield ASKAP L-band Legacy All-sky Blind Survey to search for H I in UDG candidates found in the Systematically Measuring Ultra-diffuse Galaxies survey (SMUDGes). We narrow down to 78 SMUDGes UDG candidates within the maximum radial extents of the Eridanus subgroups for this study. Most SMUDGes UDGs candidates in this study have effective radii smaller than 1.5 kpc and thus fail to meet the defining size threshold. We …
Organizing Pmode Dopplergrams Of Jupiter With Matlab, Brady T. Smith, Deborah Gulledge, Cody Shaw, Gerard Williger
Organizing Pmode Dopplergrams Of Jupiter With Matlab, Brady T. Smith, Deborah Gulledge, Cody Shaw, Gerard Williger
The Cardinal Edge
The interiors of the giant planets are poorly known. At the time of writing, such investigations have been limited to measuring gravitational effects from a handful of orbital probes. The most recent attempt to map the interior is via PMODE (the Planetary Multilevel Oscillations and Dynamics Experiment), designed to explore Jupiter’s core by collecting Dopplergrams. Small radial velocity shifts in Jupiter’s upper cloud decks enable us to map its atmospheric dynamics and consequently its interior via Dioseismology (techniques similar to Helioseismology, applied to Jupiter). This campaign produced a vast dataset with more than 50,000 exposures, every 30 seconds, over 24 …
Find The Distance To The Moon, Dean Smith
Find The Distance To The Moon, Dean Smith
AI Assignment Library
This assignment leads students through a series of measurements that lead the student to calculate the distance to the Moon. Students who complete this assignment will see how knowledge that they would normally look up is gathered through experiment and observation.
Axion-Polaritons In The Magnetic Dual Chiral Density Wave Phase Of Dense Qcd, Efrain J. Ferrer, Vivian De La Incera
Axion-Polaritons In The Magnetic Dual Chiral Density Wave Phase Of Dense Qcd, Efrain J. Ferrer, Vivian De La Incera
Physics and Astronomy Faculty Publications and Presentations
We investigate the propagation of electromagnetic radiation in the magnetic dual chiral density wave (MDCDW) phase of dense quark matter. Considering the theory of low-energy fluctuations in this phase, we show how linearly polarized photons reaching the MDCDW medium couple to the fluctuation field to produce two hybridized modes of propagation that we call in analogy with similar phenomenon in condensed matter physics axion polaritons, one of them being gapless and the other gapped. The gapped mode's gap is proportional to the background magnetic field and inversely proportional to the amplitude of the inhomogeneous condensate. The generation of axion …
The Unusual M-Dwarf Warm Jupiter Toi-1899 B: Refinement Of Orbital And Planetary Parameters, A. S. J. Lin, J. E. Libby-Roberts, J. A. Alvarado-Montes, C. I. Cañas, S. Kanodia, T. Han, L. Hebb, Eric L.N. Jensen, S. Mahadevan, L. C. Powers, T. N. Swaby, J. Wisniewski, C. Beard, C. F. Bender, C. H. Blake, W. D. Cochran, S. A. Diddams, R. C. Frazier, C. Fredrick, M. Gully-Santiago, S. Halverson, S. E. Logsdon, M. W. Mcelwain, C. Morley, J. P. Ninan, J. Rajagopal, L. W. Ramsey, P. Robertson, A. Roy, C. Schwab, G. Stefánsson, D. J. Stevens, R. C. Terrien, J. T. Wright
The Unusual M-Dwarf Warm Jupiter Toi-1899 B: Refinement Of Orbital And Planetary Parameters, A. S. J. Lin, J. E. Libby-Roberts, J. A. Alvarado-Montes, C. I. Cañas, S. Kanodia, T. Han, L. Hebb, Eric L.N. Jensen, S. Mahadevan, L. C. Powers, T. N. Swaby, J. Wisniewski, C. Beard, C. F. Bender, C. H. Blake, W. D. Cochran, S. A. Diddams, R. C. Frazier, C. Fredrick, M. Gully-Santiago, S. Halverson, S. E. Logsdon, M. W. Mcelwain, C. Morley, J. P. Ninan, J. Rajagopal, L. W. Ramsey, P. Robertson, A. Roy, C. Schwab, G. Stefánsson, D. J. Stevens, R. C. Terrien, J. T. Wright
Physics & Astronomy Faculty Works
TOI-1899 b is a rare exoplanet, a temperate warm Jupiter orbiting an M dwarf, first discovered by Cañas et al. (2020) from a TESS single-transit event. Using new radial velocities (RVs) from the precision RV spectrographs HPF and NEID, along with additional TESS photometry and ground-based transit follow-up, we are able to derive a much more precise orbital period of P = 29.090312 (+0.000036)/(-0.000035) days, along with a radius of Rp = 0.99 ± 0.03 Rj. We have also improved the constraints on planet mass, Mp = 0.67 ± 0.04 Mj, and eccentricity, which …
Toi-908: A Planet At The Edge Of The Neptune Desert Transiting A G-Type Star, F. Hawthorn, D. Bayliss, D. J. Armstrong, J. Fernández Fernández, A. Osborn, S. G. Sousa, V. Adibekyan, J. Davoult, K. A. Collins, Y. Alibert, S. C. C. Barros, F. Bouchy, M. Brogi, D. R. Ciardi, T. Daylan, E. Delgado Mena, O. D. S. Demangeon, R. F. Díaz, T. Gan, K. Horne, S. Hoyer, J. M. Jenkins, Eric L.N. Jensen, J. F. Kielkopf, V. Kostov, D. W. Latham, A. M. Levine, J. Lillo-Box, L. D. Nielsen, H. P. Osborn, G. R. Ricker, J. Rodrigues, N. C. Santos, R. P. Schwarz, S. Seager, J. Serrano Bell, A. Shporer, C. Stockdale, P. A. Strøm, P. Tenenbaum, S. Udry, P. J. Wheatley, J. N. Winn, C. Ziegler
Toi-908: A Planet At The Edge Of The Neptune Desert Transiting A G-Type Star, F. Hawthorn, D. Bayliss, D. J. Armstrong, J. Fernández Fernández, A. Osborn, S. G. Sousa, V. Adibekyan, J. Davoult, K. A. Collins, Y. Alibert, S. C. C. Barros, F. Bouchy, M. Brogi, D. R. Ciardi, T. Daylan, E. Delgado Mena, O. D. S. Demangeon, R. F. Díaz, T. Gan, K. Horne, S. Hoyer, J. M. Jenkins, Eric L.N. Jensen, J. F. Kielkopf, V. Kostov, D. W. Latham, A. M. Levine, J. Lillo-Box, L. D. Nielsen, H. P. Osborn, G. R. Ricker, J. Rodrigues, N. C. Santos, R. P. Schwarz, S. Seager, J. Serrano Bell, A. Shporer, C. Stockdale, P. A. Strøm, P. Tenenbaum, S. Udry, P. J. Wheatley, J. N. Winn, C. Ziegler
Physics & Astronomy Faculty Works
We present the discovery of an exoplanet transiting TOI-908 (TIC-350153977) using data from TESS sectors 1, 12, 13, 27, 28, and 39. TOI-908 is a T = 10.7 mag G-dwarf (Teff = 5626 ± 61 K) solar-like star with a mass of 0.950 ± 0.010 M⊙ and a radius of 1.028 ± 0.030 R⊙. The planet, TOI-908 b, is a 3.18 ± 0.16 R⊕ planet in a 3.18 d orbit. Radial velocity measurements from HARPS reveal TOI-908 b has a mass of approximately 16.1 ± 4.1 M⊕, resulting in a bulk planetary density of 2.7 (+0.2)/(-0.4)g cm⁻³. TOI-908 b …
Geneseo Solar Eclipse Website, Anne Pellerin, Aaron Steinhauer, Sherry Larson-Rhodes, Leah Root
Geneseo Solar Eclipse Website, Anne Pellerin, Aaron Steinhauer, Sherry Larson-Rhodes, Leah Root
Myth and Science, 2023-24
The Geneseo Solar Eclipse website is a collaboration by Faculty from the SUNY Geneseo Physics & Astronomy Department and the Staff of Fraser Hall Library, highlighting Geneseo campus and local eclipse-related events, and demonstrating the science behind solar eclipses. Learn about the differences between partial and total solar eclipses, how eclipses are used to find new worlds, and find resources and Geneseo campus events celebrating the eclipses of Oct 14, 2023 and April 8, 2024!
This archived copy of eclipse.geneseo.edu, captured on July 16, 2024, can be viewed using The Internet Archive, Conifer, or by loading the WARC …