Zobrazeno 1 - 10
of 3 011
pro vyhledávání: '"Irwin, I"'
Autor:
Chandler, John F., Battat, James B. R., Murphy, Jr., Thomas W., Reardon, Daniel, Reasenberg, Robert D., Shapiro, Irwin I.
We describe for the first time in the scientific literature the Planetary Ephemeris Program (PEP), an open-source general-purpose astrometric data analysis program. We discuss, in particular, the implementation of pulsar timing analysis, which was re
Externí odkaz:
http://arxiv.org/abs/2103.16745
Autor:
Turyshev, Slava G., Murphy, Jr., Thomas W., Adelberger, Eric G., Battat, James, Currie, Douglas, Folkner, William M., Gundlach, Jens, Merkowitz, Stephen M., Nordtvedt, Kenneth L., Reasenberg, Robert D., Shapiro, Irwin I., Shao, Michael, Stubbs, Christopher W., Tinto, Massimo, Williams, James G., Yu, Nan
The recent discovery of "dark energy" has challenged Einstein's general theory of relativity as a complete model for our macroscopic universe. From a theoretical view, the challenge is even stronger: general relativity clearly does not extend to the
Externí odkaz:
http://arxiv.org/abs/0902.3004
Autor:
Barkana, Rennan, Lehar, Joseph, Falco, Emilio E., Grogin, Norman A., Keeton, Charles R., Shapiro, Irwin I.
We examine models of the mass distribution for the first known case of gravitational lensing. Several new sets of constraints are used, based on recent observations. We remodel the VLBI observations of the radio jets in the two images of Q0957+561, s
Externí odkaz:
http://arxiv.org/abs/astro-ph/9808096
We present long-slit LRIS/Keck spectroscopic observations of the gravitational lens system 0957+561. Averaged over all of our data, the rest-frame velocity dispersion sigma_v of the central lens galaxy G1 is sigma_v = 279 +- 12 km/s. However, there a
Externí odkaz:
http://arxiv.org/abs/astro-ph/9702152
Quadruple gravitational lens systems offer the possibility of measuring time delays for image pairs, microlensing effects, and extinction in distant galaxies. Observations of these systems may be used to obtain estimates of H_o and to study the vario
Externí odkaz:
http://arxiv.org/abs/astro-ph/9612182
Autor:
Fatima Zaira J. Burahim, Desiree Jane A. Sapiandante, Karlyn Louise B. Ramos, Jeff Archie Mari P. Garbino, Fredric Nuel B. Lacambra, Kurt Irwin I. Edem, Mark Fiolo V. Espiritu, Danie Kaye C. Rillera, Charlene Princess S. Tolenada
Publikováno v:
Asian Journal of Biological and Life Sciences. 11:218-224
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::036865fb4a2abaf23eb3b28eef4ab650
https://doi.org/10.5530/ajbls.2022.11.30
https://doi.org/10.5530/ajbls.2022.11.30
Autor:
Rachael L. Hachadorian, Irwin I. Tendler, Brian W. Pogue, Petr Bruza, Michael Jermyn, Bassem I. Zaki, David J. Gladstone, P.E. Schaner, Lesley A. Jarvis, Benjamin B. Williams, Daniel A. Alexander
Publikováno v:
International Journal of Radiation Oncology*Biology*Physics. 109:1627-1637
Purpose The value of Cherenkov imaging as an on-patient, real-time, treatment delivery verification system was examined in a 64-patient cohort during routine radiation treatments in a single-center study. Methods and Materials Cherenkov cameras were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed2a64583abfe08e7be0290f6b987d70
https://doi.org/10.1016/j.ijrobp.2020.11.013
https://doi.org/10.1016/j.ijrobp.2020.11.013
Autor:
Benjamin B. Williams, Gregory C. Sharp, Jennifer Soter, David J. Gladstone, Michael Jermyn, Irwin I. Tendler, Brian W. Pogue, Petr Bruza, Lesley A. Jarvis
Publikováno v:
Journal of Applied Clinical Medical Physics
Purpose The novel scintillator‐based system described in this study is capable of accurately and remotely measuring surface dose during Total Skin Electron Therapy (TSET); this dosimeter does not require post‐exposure processing or annealing and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4cd5a7e83a0948a644d59eef40662f13
https://doi.org/10.1002/acm2.12880
https://doi.org/10.1002/acm2.12880
Publikováno v:
Journal of Geophysical Research: Planets. 126
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6acc4e2ce79f90a87d1b344513225a4
https://doi.org/10.1029/2021je006887
https://doi.org/10.1029/2021je006887
Autor:
Brian W. Pogue, Rongxiao Zhang, Jeremy S. Bredfeldt, David J. Gladstone, Irwin I. Tendler, Petr Bruza, Michael Jermyn
Publikováno v:
Medical Physics. 46:3674-3678
PURPOSE The aim of this study was to create an optical imaging-based system for quality assurance (QA) testing of a dedicated Co-60 total body irradiation (TBI) machine. Our goal is to streamline the QA process by minimizing the amount time necessary
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37b9308c3810792e270a7690b0abe77e
https://doi.org/10.1002/mp.13637
https://doi.org/10.1002/mp.13637