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Articles 511 - 526 of 526
Full-Text Articles in Physical Sciences and Mathematics
Hiding In Plain Sight: Record-Breaking Compact Stellar Systems In The Sloan Digital Sky Survey, Michael Sandoval, Richard Vo, Aaron Romanowsky, Jay Strader, Jieun Choi, Zachary Jennings, Charlie Conroy, Jean Brodie, Caroline Foster, Alexa Villaume, Mark Norris, Joachim Janz, Duncan Forbes
Hiding In Plain Sight: Record-Breaking Compact Stellar Systems In The Sloan Digital Sky Survey, Michael Sandoval, Richard Vo, Aaron Romanowsky, Jay Strader, Jieun Choi, Zachary Jennings, Charlie Conroy, Jean Brodie, Caroline Foster, Alexa Villaume, Mark Norris, Joachim Janz, Duncan Forbes
Faculty Publications
No abstract provided.
Human Behavior During Spaceflight - Evidence From An Analog Environment, Kenny M. Arnaldi, Guy Smith, Jennifer E. Thropp
Human Behavior During Spaceflight - Evidence From An Analog Environment, Kenny M. Arnaldi, Guy Smith, Jennifer E. Thropp
Journal of Aviation/Aerospace Education & Research
Spaceflight offers a multitude of stressors to humans living and working in space, originating from the external space environment and the life-support system. Future space participants may be ordinary people with different medical and psychosocial backgrounds who may not receive the intense spaceflight preparation of astronauts. Consequently, during a mission, a space participant’s mood and behavior could differ from a trained astronaut. This study was an exploratory research project that used an artificial habitat to replicate an orbital environment and the activities performed by humans in space. The study evaluated whether the type of environment affects mood and temperament. Two …
On X-Ray Pulsations In Beta Cephei-Type Variables, L. Oskinova, H. Todt, D. Huenemoerder, S. Hubrig, Richard Ignace, W.-R. Hamann, L. Balona
On X-Ray Pulsations In Beta Cephei-Type Variables, L. Oskinova, H. Todt, D. Huenemoerder, S. Hubrig, Richard Ignace, W.-R. Hamann, L. Balona
ETSU Faculty Works
Beta Cephei-type variables are early B-type stars that are characterized by oscillations observable in their optical light curves. At least one Beta Cep-variable also shows periodic variability in X-rays. Here we study the X-ray light curves in a sample of beta Cep-variables to investigate how common X-ray pulsations are for this type of stars. We searched the Chandra and XMM-Newton X-ray archives and selected stars that were observed by these telescopes for at least three optical pulsational periods. We retrieved and analyzed the X-ray data for kappa Sco, beta Cru, and alpha Vir. The X-ray light curves of these objects …
Precision Measurements Of Aⁿ1 In The Deep Inelastic Regime, D. S. Parno, D. Flay, M. Posik, M. Canan, C. Hyde, The Jefferson Lab Hall A Collaboration
Precision Measurements Of Aⁿ1 In The Deep Inelastic Regime, D. S. Parno, D. Flay, M. Posik, M. Canan, C. Hyde, The Jefferson Lab Hall A Collaboration
Physics Faculty Publications
We have performed precision measurements of the double-spin virtual-photon asymmetry A1 on the neutron in the deep inelastic scattering regime, using an open-geometry, large-acceptance spectrometer and a longitudinally and transversely polarized 3He target. Our data cover a wide kinematic range 0.277 <= x <= 0.548 at an average Q2 value of 3.078(GeV/c)2, doubling the available high-precision neutron data in this xrange. We have combined our results with world data on proton targets to make a leading-order extraction of the ratio of polarized-to-unpolarized parton distribution functions for up quarks and for down quarks in the same kinematic range. Our data are consistent with …
First Measurement Of The Polarization Observable E In The P→ (Ɣ→, Π+) In Reaction Up To 2.25 Gev, S. Strauch, W. J. Briscoe, M. Döring, E. Klempt, V. A. Nikonov, E. Pasyuk, D. Rönchen, A.V. Sarantsev, I. Strakovsky, R. Workman, K. P. Adhikari, D. Adikaram, L. El Fassi
First Measurement Of The Polarization Observable E In The P→ (Ɣ→, Π+) In Reaction Up To 2.25 Gev, S. Strauch, W. J. Briscoe, M. Döring, E. Klempt, V. A. Nikonov, E. Pasyuk, D. Rönchen, A.V. Sarantsev, I. Strakovsky, R. Workman, K. P. Adhikari, D. Adikaram, L. El Fassi
Physics Faculty Publications
First results from the longitudinally polarized frozen-spin target (FROST) program are reported. The double-polarization observable E, for the reaction ɣ→p→→π+n, has been measured using a circularly polarized tagged-photon beam, with energies from 0.35 to 2.37 GeV. The final-state pions were detected with the CEBAF Large Acceptance Spectrometer in Hall B at the Thomas Jefferson National Accelerator Facility. These polarization data agree fairly well with previous partial-wave analyses at low photon energies. Over much of the covered energy range, however, significant deviations are observed, particularly in the high-energy region where high-L multipoles contribute. The data have been …
The Lyman Alpha Reference Sample: Iv. Morphology At Low And High Redshift, L. Guaita, J. Melinder, M. Hayes, G. Ostlin, J. Gonzalez, A. Adamo, J. Mas-Hesse, A. Sandberg, H. Oti-Floranes, D. Schaerer, A. Verhamme, E. Freeland, I. Orlitova, P. Laursen, John Cannon, F. Duval, T. Rivera-Thorsen, E. Herenz, D. Kunth, H. Atek, J. Puschnig, P. Gruyters, S. Pardy
The Lyman Alpha Reference Sample: Iv. Morphology At Low And High Redshift, L. Guaita, J. Melinder, M. Hayes, G. Ostlin, J. Gonzalez, A. Adamo, J. Mas-Hesse, A. Sandberg, H. Oti-Floranes, D. Schaerer, A. Verhamme, E. Freeland, I. Orlitova, P. Laursen, John Cannon, F. Duval, T. Rivera-Thorsen, E. Herenz, D. Kunth, H. Atek, J. Puschnig, P. Gruyters, S. Pardy
John Cannon
No abstract provided.
Oxygen Abundance Measurements Of Shield Galaxies, N. Haurberg, J. Salzer, John Cannon, M. Marshall
Oxygen Abundance Measurements Of Shield Galaxies, N. Haurberg, J. Salzer, John Cannon, M. Marshall
John Cannon
No abstract provided.
Agc198606: A Gas-Bearing Dark Matter Minihalo?, E. Adams, Y. Faerman, W. Janesh, S. Janowiecki, T. Oosterloo, K. Rhode, R. Giovanelli, M. Haynes, J. Salzer, A. Sternberg, John Cannon, R. Munoz
Agc198606: A Gas-Bearing Dark Matter Minihalo?, E. Adams, Y. Faerman, W. Janesh, S. Janowiecki, T. Oosterloo, K. Rhode, R. Giovanelli, M. Haynes, J. Salzer, A. Sternberg, John Cannon, R. Munoz
John Cannon
No abstract provided.
The Alfalfa "Almost Darks" Campaign: Pilot Vla Hi Observations Of Five High Mass-To-Light Ratio Systems, John Cannon, C. Martinkus, L. Leisman, M. Haynes, E. Adams, R. Giovanelli, G. Hallenbeck, S. Janowiecki, M. Jones, G. Josza, R. Koopmann, N. Nichols, E. Papastergis, K. Rhode, J. Salzer, P. Trosicht
The Alfalfa "Almost Darks" Campaign: Pilot Vla Hi Observations Of Five High Mass-To-Light Ratio Systems, John Cannon, C. Martinkus, L. Leisman, M. Haynes, E. Adams, R. Giovanelli, G. Hallenbeck, S. Janowiecki, M. Jones, G. Josza, R. Koopmann, N. Nichols, E. Papastergis, K. Rhode, J. Salzer, P. Trosicht
John Cannon
No abstract provided.
(Almost) Dark Hi Sources In The Alfalfa Survey: The Intriguing Case Of Hi1232+20, Steven Janowiecki, Lukas Leisman, Gyula Jozsa, John Salzer, Martha Haynes, Riccardo Giovanelli, Katherine Rhode, John Cannon, Elizabeth Adams, William Janesh
(Almost) Dark Hi Sources In The Alfalfa Survey: The Intriguing Case Of Hi1232+20, Steven Janowiecki, Lukas Leisman, Gyula Jozsa, John Salzer, Martha Haynes, Riccardo Giovanelli, Katherine Rhode, John Cannon, Elizabeth Adams, William Janesh
John Cannon
No abstract provided.
The Lyman Alpha Reference Sample: V. Empirical Inferences On The Lyman Alpha Output From High-Resolution Ultraviolet Spectroscopy, T. Rivera-Thorsen, M. Hayes, G. Ostlin, F. Duval, I. Orlitova, A. Verhamme, J. Mas-Hesse, D. Schaerer, John Cannon, H. Oti-Floranes, A. Sandberg, L. Guaita, A. Adamo, H. Atek, E. Herenz, D. Kunth, P. Laursen, J. Melinder
The Lyman Alpha Reference Sample: V. Empirical Inferences On The Lyman Alpha Output From High-Resolution Ultraviolet Spectroscopy, T. Rivera-Thorsen, M. Hayes, G. Ostlin, F. Duval, I. Orlitova, A. Verhamme, J. Mas-Hesse, D. Schaerer, John Cannon, H. Oti-Floranes, A. Sandberg, L. Guaita, A. Adamo, H. Atek, E. Herenz, D. Kunth, P. Laursen, J. Melinder
John Cannon
No abstract provided.
Characterizing The Star Formation Of The Low-Mass Shield Galaxies From Hubble Space Telescope Imaging, K. Mcquinn, John Cannon, A. Dolphin, E. Skillman, M. Haynes, J. Simones, J. Salzer, E. Adams, E. Elson, R. Giovanelli, J. Ott
Characterizing The Star Formation Of The Low-Mass Shield Galaxies From Hubble Space Telescope Imaging, K. Mcquinn, John Cannon, A. Dolphin, E. Skillman, M. Haynes, J. Simones, J. Salzer, E. Adams, E. Elson, R. Giovanelli, J. Ott
John Cannon
No abstract provided.
Carrier Heating And Negative Photoconductivity In Graphene, James Heyman, J. D. Stein, Z. S. Kaminski, A. R. Banman, A. M. Massari, J. T. Robinson
Carrier Heating And Negative Photoconductivity In Graphene, James Heyman, J. D. Stein, Z. S. Kaminski, A. R. Banman, A. M. Massari, J. T. Robinson
James Heyman
No abstract provided.
Experimental Check On The Validity Of The Special Theory Of Relativity, Vildyan Yanbikov
Experimental Check On The Validity Of The Special Theory Of Relativity, Vildyan Yanbikov
Vildyan Yanbikov
Calculation of quantitative characteristics of rotating interferometer Michelson-Morley experiment. The objective of the experiment. Confirmation alternate the Lorentz contraction of the interferometer arms as it rotates. Experimental check on the validity of the special theory of relativity.
On X-Ray Pulsations In Beta Cephei-Type Variables., L. M. Oskinova, H. Todt, D. P. Huenemoerder, S. Hubrig, Richard Ignace, W.-R. Hamann, L. Balona
On X-Ray Pulsations In Beta Cephei-Type Variables., L. M. Oskinova, H. Todt, D. P. Huenemoerder, S. Hubrig, Richard Ignace, W.-R. Hamann, L. Balona
Richard Ignace
Beta Cephei-type variables are early B-type stars that are characterized by oscillations observable in their optical light curves. At least one Beta Cep-variable also shows periodic variability in X-rays. Here we study the X-ray light curves in a sample of beta Cep-variables to investigate how common X-ray pulsations are for this type of stars. We searched the Chandra and XMM-Newton X-ray archives and selected stars that were observed by these telescopes for at least three optical pulsational periods. We retrieved and analyzed the X-ray data for kappa Sco, beta Cru, and alpha Vir. The X-ray light curves of these objects …
The Shielding Of Gravity On Earth, Vildyan Yanbikov
The Shielding Of Gravity On Earth, Vildyan Yanbikov
Vildyan Yanbikov
The shielding of gravity on Earth