Zobrazeno 1 - 10
of 464
pro vyhledávání: '"James A. Davidson"'
Autor:
Kyle Franson, William O. Balmer, Brendan P. Bowler, Laurent Pueyo, Yifan Zhou, Emily Rickman, Zhoujian Zhang, Sagnick Mukherjee, Tim D. Pearce, Daniella C. Bardalez Gagliuffi, Lauren I. Biddle, Timothy D. Brandt, Rachel Bowens-Rubin, Justin R. Crepp, James W. Davidson Jr., Jacqueline Faherty, Christian Ginski, Elliott P. Horch, Marvin Morgan, Caroline V. Morley, Marshall D. Perrin, Aniket Sanghi, Maïssa Salama, Christopher A. Theissen, Quang H. Tran, Trevor N. Wolf
Publikováno v:
The Astrophysical Journal Letters, Vol 974, Iss 1, p L11 (2024)
With a dynamical mass of 3 M _Jup , the recently discovered giant planet AF Lep b is the lowest-mass imaged planet with a direct mass measurement. Its youth and spectral type near the L/T transition make it a promising target to study the impact of c
Externí odkaz:
https://doaj.org/article/122b8bd6b18c434e93cbf8296d60a7ca
Autor:
Mauri J. Valtonen, Staszek Zola, Alok C. Gupta, Shubham Kishore, Achamveedu Gopakumar, Svetlana G. Jorstad, Paul J. Wiita, Minfeng Gu, Kari Nilsson, Alan P. Marscher, Zhongli Zhang, Rene Hudec, Katsura Matsumoto, Marek Drozdz, Waldemar Ogloza, Andrei V. Berdyugin, Daniel E. Reichart, Markus Mugrauer, Lankeswar Dey, Tapio Pursimo, Harry J. Lehto, Stefano Ciprini, T. Nakaoka, M. Uemura, Ryo Imazawa, Michal Zejmo, Vladimir V. Kouprianov, James W. Davidson Jr., Alberto Sadun, Jan Štrobl, Z. R. Weaver, Martin Jelínek
Publikováno v:
The Astrophysical Journal Letters, Vol 968, Iss 2, p L17 (2024)
We report the study of a huge optical intraday flare on 2021 November 12 at 2 a.m. UT in the blazar OJ 287. In the binary black hole model, it is associated with an impact of the secondary black hole on the accretion disk of the primary. Our multifre
Externí odkaz:
https://doaj.org/article/e6e575b905e5482a8bee0479a0634bbd
Autor:
Nancy Remage Evans, Gail H. Schaefer, Alexandre Gallenne, Guillermo Torres, Elliott P. Horch, Richard I. Anderson, John D. Monnier, Rachael M. Roettenbacher, Fabien Baron, Narsireddy Anugu, James W. Davidson Jr., Pierre Kervella, Garance Bras, Charles Proffitt, Antoine Mérand, Margarita Karovska, Jeremy Jones, Cyprien Lanthermann, Stefan Kraus, Isabelle Codron, Howard E. Bond, Giordano Viviani
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 2, p 190 (2024)
The 30 yr orbit of the Cepheid Polaris has been followed with observations by the Center for High Angular Resolution Astronomy (CHARA) Array from 2016 through 2021. An additional measurement has been made with speckle interferometry at the Apache Poi
Externí odkaz:
https://doaj.org/article/7c3ba5741f58471792c01d41d6d9f3cc
Autor:
James W. Davidson Jr., Elliott P. Horch, Steven R. Majewski, Evan Fagan, Melissa A. Shea, Torrie Sutherland, Robert F. Wilson, D. Xavier Lesley, Richard A. Pellegrino, Jonathan P. Leonard, John C. Wilson, Nancy J. Chanover, Peter Dow, Todd J. Henry, William Ketzeback, Devin McDonald, Russet McMillan, Jack Dembicky, Riley A. DeColibus, Candace Gray, Amanda Townsend
Publikováno v:
The Astronomical Journal, Vol 167, Iss 3, p 117 (2024)
The Differential Speckle Survey Instrument (DSSI) was relocated to the Astrophysical Research Consortium 3.5 m telescope at Apache Point Observatory (APO) in early 2022. Here we present results from the first year of observations along with an update
Externí odkaz:
https://doaj.org/article/88394812b3604ea78754d9c01e27d19d
Publikováno v:
Applied Mechanics, Vol 2, Iss 2, Pp 419-430 (2021)
The tensile fracture mechanics and thermo-mechanical properties of mixtures composed of two kinds of epoxy resins of different chemical structures and functional groups were studied. The base resin was a bi-functional epoxy resin based on diglycidyl
Externí odkaz:
https://doaj.org/article/00242bf1205040299c2faeb068922651
Autor:
James R. Davidson, James A. Quinn, Claudia Rothmann, Ankur Bajpai, Colin Robert, Conchúr M. Ó Brádaigh, Edward D. McCarthy
Publikováno v:
Materials & Design, Vol 213, Iss , Pp 110305- (2022)
An investigation into the mechanical response of pneumatically-spliced carbon fibre yarns as a potential reinforcing material for polymer composites is presented. High strength mechanical connections between carbon fibre yarns are produced by joining
Externí odkaz:
https://doaj.org/article/5122f643858e4f78a4db05e5fdeaa7d2
Autor:
Andrés Almeida, Scott F. Anderson, Maria Argudo-Fernández, Carles Badenes, Kat Barger, Jorge K. Barrera-Ballesteros, Chad F. Bender, Erika Benitez, Felipe Besser, Jonathan C. Bird, Dmitry Bizyaev, Michael R. Blanton, John Bochanski, Jo Bovy, William Nielsen Brandt, Joel R. Brownstein, Johannes Buchner, Esra Bulbul, Joseph N. Burchett, Mariana Cano Díaz, Joleen K. Carlberg, Andrew R. Casey, Vedant Chandra, Brian Cherinka, Cristina Chiappini, Abigail A. Coker, Johan Comparat, Charlie Conroy, Gabriella Contardo, Arlin Cortes, Kevin Covey, Jeffrey D. Crane, Katia Cunha, Collin Dabbieri, James W. Davidson Jr, Megan C. Davis, Anna Barbara de Andrade Queiroz, Nathan De Lee, José Eduardo Méndez Delgado, Sebastian Demasi, Francesco Di Mille, John Donor, Peter Dow, Tom Dwelly, Mike Eracleous, Jamey Eriksen, Xiaohui Fan, Emily Farr, Sara Frederick, Logan Fries, Peter Frinchaboy, Boris T. Gänsicke, Junqiang Ge, Consuelo González Ávila, Katie Grabowski, Catherine Grier, Guillaume Guiglion, Pramod Gupta, Patrick Hall, Keith Hawkins, Christian R. Hayes, J. J. Hermes, Lorena Hernández-García, David W. Hogg, Jon A. Holtzman, Hector Javier Ibarra-Medel, Alexander Ji, Paula Jofre, Jennifer A. Johnson, Amy M. Jones, Karen Kinemuchi, Matthias Kluge, Anton Koekemoer, Juna A. Kollmeier, Marina Kounkel, Dhanesh Krishnarao, Mirko Krumpe, Ivan Lacerna, Paulo Jakson Assuncao Lago, Chervin Laporte, Chao Liu, Ang Liu, Xin Liu, Alexandre Roman Lopes, Matin Macktoobian, Steven R. Majewski, Viktor Malanushenko, Dan Maoz, Thomas Masseron, Karen L. Masters, Gal Matijevic, Aidan McBride, Ilija Medan, Andrea Merloni, Sean Morrison, Natalie Myers, Szabolcs Mészáros, C. Alenka Negrete, David L. Nidever, Christian Nitschelm, Daniel Oravetz, Audrey Oravetz, Kaike Pan, Yingjie Peng, Marc H. Pinsonneault, Rick Pogge, Dan Qiu, Solange V. Ramirez, Hans-Walter Rix, Daniela Fernández Rosso, Jessie Runnoe, Mara Salvato, Sebastian F. Sanchez, Felipe A. Santana, Andrew Saydjari, Conor Sayres, Kevin C. Schlaufman, Donald P. Schneider, Axel Schwope, Javier Serna, Yue Shen, Jennifer Sobeck, Ying-Yi Song, Diogo Souto, Taylor Spoo, Keivan G. Stassun, Matthias Steinmetz, Ilya Straumit, Guy Stringfellow, José Sánchez-Gallego, Manuchehr Taghizadeh-Popp, Jamie Tayar, Ani Thakar, Patricia B. Tissera, Andrew Tkachenko, Hector Hernandez Toledo, Benny Trakhtenbrot, José G. Fernández-Trincado, Nicholas Troup, Jonathan R. Trump, Sarah Tuttle, Natalie Ulloa, Jose Antonio Vazquez-Mata, Pablo Vera Alfaro, Sandro Villanova, Stefanie Wachter, Anne-Marie Weijmans, Adam Wheeler, John Wilson, Leigh Wojno, Julien Wolf, Xiang-Xiang Xue, Jason E. Ybarra, Eleonora Zari, Gail Zasowski
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 267, Iss 2, p 44 (2023)
The eighteenth data release (DR18) of the Sloan Digital Sky Survey (SDSS) is the first one for SDSS-V, the fifth generation of the survey. SDSS-V comprises three primary scientific programs or “Mappers”: the Milky Way Mapper (MWM), the Black Hole
Externí odkaz:
https://doaj.org/article/c316293bd0cb4069bc0c64377b2d0cef
Publikováno v:
International Journal of Steel Structures. 23:345-362
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf98f55162d687a14d527712bb0192c0
https://doi.org/10.1007/s13296-022-00698-9
https://doi.org/10.1007/s13296-022-00698-9
Autor:
Chukwuma C. Okafor, Olga L. Rojas, Bujing Liu, Kelly Turner, J. Brian Anderson, James S. Davidson
Publikováno v:
Journal of Performance of Constructed Facilities. 37
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a375f3a2dfec9869d546b340b086b2c
https://doi.org/10.1061/jpcfev.cfeng-4136
https://doi.org/10.1061/jpcfev.cfeng-4136
Autor:
John E Hatfield, James S Davidson
Publikováno v:
Advances in Structural Engineering. 25:1535-1548
When subjected to blast loading, brittle building components such as glass and masonry tend to break into fragments that are propelled at hazardous high velocities. There has been copious research on defining the design resistance of structures subje
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31ac07a02d07282c32737031689ecf7d
https://doi.org/10.1177/13694332221087339
https://doi.org/10.1177/13694332221087339