Results 31 to 40 of about 342,437 (282)

Effects of high-energy ionizing particles on the Si:As mid-infrared detector array on board the AKARI satellite

, 2011
We evaluate the effects of high-energy ionizing particles on the Si:As impurity band conduction (IBC) mid-infrared detector on board AKARI, the Japanese infrared astronomical satellite.
A. Mouri, D. Ishihara, H. Kaneda, H. Kataza, Kessler M. F., M. Yamagishi, Moseley S. H., Murakami H., Onaka T., S. Oyabu, T. Mori, T. Onaka, T. Wada   +12 more
core   +1 more source

Galaxies as Fluctuations in the Ionizing Background Radiation at Low Redshift [PDF]

, 2003
Some Lyman continuum photons are likely to escape from most galaxies, and these can play an important role in ionizing gas around and between galaxies, including gas that gives rise to Lyman alpha absorption.
Baes, Maarten, Davies, Jonathan I., Evans, Rhodri, Gunesch, Roland, Linder, Suzanne M., Roberts, Sarah, Sabatini, Sabina, Smith, Rodney   +7 more
core   +4 more sources

Reevaluating the Paradox: Does Low-Dose Radiation from A-Bombs Affect Lifespan and Cancer Mortality? [PDF]

Journal of Biomedical Physics and Engineering
Reevaluating the Paradox: Does Low-Dose Radiation from A-Bombs Affect Lifespan and Cancer Mortality?Reevaluating the Paradox: Does Low-Dose Radiation from A-Bombs Affect Lifespan and Cancer Mortality?Reevaluating the Paradox: Does Low-Dose Radiation from
Razieh Rashidfar, Zeynab Seyedi Sarhad, Seyed Mohammad Javad Mortazavi, Lembit Sihver   +3 more
doaj   +1 more source

Constraining the metallicities, ages, star formation histories, and ionizing continua of extragalactic massive star populations

, 2019
We infer the properties of massive star populations using the far-ultraviolet stellar continua of 61 star-forming galaxies: 42 at low-z observed with HST and 19 at z~2 from the Megasaura sample.
Bayliss, M., Berg, D. A., Chisholm, J., Dahle, H., Gladders, M., Rigby, J. R., Sharon, K.   +6 more
core   +1 more source

Formulae for partial widths derived from the Lindblad equation [PDF]

, 2012
A method for calculating partial widths of auto-ionizing states is proposed. It combines either a complex absorbing potential or exterior complex scaling with the Lindblad equation. The corresponding classical rate equations are reproduced, and the trace
H. P. Breuer, H. Wielandt, J. J. Sakurai, N. Elander, Sølve Selstø   +4 more
core   +3 more sources

Development of a 6 GHz RF-EMF Exposure System for Investigating Human Skin Temperature Responses: Characterization, Integration, and Pilot Testing

IEEE Access, 2023
We developed a radiofrequency electromagnetic field (RF-EMF) exposure system to investigate human skin temperature responses to localized exposures. The system was designed to project a 6 GHz RF-EMF beam with enough energy to rapidly increase peak local ...
Abdelelah Alzahed, Eric Lemay, Mykola Zhuk, Gregory B. Gajda, James P. Mcnamee, Gregory W. Mcgarr   +5 more
doaj   +1 more source

Spectroscopic detection of CIV in a galaxy at z=7.045: Implications for the ionizing spectra of reionization-era galaxies

, 2015
We present Keck/MOSFIRE observations of UV metal lines in four bright gravitationally-lensed z~6-8 galaxies behind the cluster Abell 1703. The spectrum of A1703-zd6, a highly-magnified star forming galaxy with a Lyman-alpha redshift of z=7.045, reveals a
Charlot, Stephane, Clement, Benjamin, Feltre, Anna, Gutkin, Julia, Mainali, Ramesh, Richard, Johan, Robertson, Brant, Schenker, Matthew, Siana, Brian, Stark, Daniel P., Tang, Mengtao, Walth, Gregory   +11 more
core   +3 more sources

Gravitational lensing reveals ionizing ultraviolet photons escaping from a distant galaxy [PDF]

, 2019
During the epoch of reionisation, neutral gas in the early Universe was ionized by hard ultraviolet radiation emitted by young stars in the first galaxies. To do so, ionizing ultraviolet photons must escape from the host galaxy.
Bayliss, Matthew, Chisholm, John, Dahle, Håkon, Florian, Michael K., Gladders, Michael D., Gronke, Max, Mahler, Guillaume, Rigby, Jane R., Rivera-Thorsen, T. Emil, Sharon, Keren   +9 more
core   +1 more source

Correlações técnicas e ocupacionais da radiologia intervencionista Occupational and technical correlations of interventional radiology

Jornal Vascular Brasileiro, 2008
A radiologia diagnóstica é a área da física médica relacionada ao uso de raios X para a obtenção de informações anatômicas e funcionais do corpo humano.
Edvaldo de Souza, José Paravidino de Macedo Soares   +1 more
doaj   +1 more source

The extended HeII4686-emitting region in IZw18 unveiled: clues for peculiar ionizing sources [PDF]

, 2015
New integral field spectroscopy has been obtained for IZw18, the nearby lowest-metallicity galaxy considered our best local analog of systems forming at high-z. Here we report the spatially resolved spectral map of the nebular HeII4686 emission in IZw18,
Bayo, F. M., Brinchmann, J., Durret, F., Iglesias-Paramo, J., Kehrig, C., Kunth, D., Perez-Montero, E., Vilchez, J. M.   +7 more
core   +6 more sources