Limpar
13 resultados

Acesso aberto

Tipo do recurso

Ano de criação

Produção nacional

Revisado por pares

Áreas

Idioma

Editores

Artigo Revisado por pares

Huasi Hu, Qunshu Wang, Juan Qin, Yuelei Wu, Tiankui Zhang, Xie Zhongsheng, Xinbiao Jiang, Guoguang Zhang, Hu Xu, Xiangyang Zheng, Jing Zhang, Wenhao Liu, Zhenghong Li, Bo‐Ping Zhang, Linbo Li, Zhaohui Song, Xiaoping Ouyang, Jun Zhu, Yaolin Zhao, Xiaoqin Mi, Zhengping Dong, Cheng Li, Zhenyu Jiang, Yuanping Zhan,

... radiation shielding effects in comparison with PB202 and KRAFTON-XP3, especially the Cakes with multi-layers structures ...

Tópico(s): Nuclear Physics and Applications

2008 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Nuclear Science

Artigo Acesso aberto Revisado por pares

Jae Won Shin, Seung‐Woo Hong, Sang‐In Bak, Do Yoon Kim, Chong Yeal Kim,

... as graphite, iron, polyethylene, NS-4-FR and KRAFTON-HB. As a neutron source, 252Cf is considered. ...

Tópico(s): Graphite, nuclear technology, radiation studies

2014 - Springer Science+Business Media | Journal of the Korean Physical Society

Artigo Acesso aberto Revisado por pares

Jennifer E. Andrews, Kelsie Krafton, Geoffrey C. Clayton, Edward Montiel, R. Wesson, Ben Sugerman, M. J. Barlow, M. Matsuura, H. Drass,

SN 2011ja was a bright (I = −18.3) Type II supernova occurring in the nearby edge on spiral galaxy NGC 4945. Flat-topped and multipeaked H α and H β spectral emission lines appear between 64 and 84 d post-explosion, indicating interaction with a disc-like circumstellar medium inclined ∼45° from edge-on. After day 84, an increase in the H- and K-band flux along with heavy attenuation of the red wing of the emission lines are strong indications of early dust formation, likely located in the cool dense ...

Tópico(s): Astrophysics and Cosmic Phenomena

2016 - Oxford University Press | Monthly Notices of the Royal Astronomical Society

Artigo Acesso aberto Revisado por pares

Antonia Bevan, R. Wesson, M. J. Barlow, I. De Looze, Jennifer E. Andrews, Geoffrey C. Clayton, Kelsie Krafton, M. Matsuura, D. Milisavljević,

In order to understand the contribution of core-collapse supernovae to the dust budget of the early universe, it is important to understand not only the mass of dust that can form in core-collapse supernovae but also the location and rate of dust formation. SN 2005ip is of particular interest since dust has been inferred to have formed in both the ejecta and the post-shock region behind the radiative reverse shock. We have collated eight optical archival spectra that span the lifetime of SN 2005ip ...

Tópico(s): Astrophysical Phenomena and Observations

2019 - Oxford University Press | Monthly Notices of the Royal Astronomical Society

Artigo Acesso aberto Revisado por pares

Samaporn Tinyanont, M. M. Kasliwal, Kelsie Krafton, Ryan M. Lau, Jeonghee Rho, Douglas C. Leonard, Kishalay De, J. Jencson, Dimitri Mawet, Maxwell A. Millar‐Blanchaer, Ricky Nilsson, Lin Yan, R. D. Gehrz, G. Hélou, Schuyler D. Van Dyk, Eugene Serabyn, Ori D. Fox, Geoffrey C. Clayton,

We present infrared (IR) photometry and spectroscopy of the Type II-P SN 2017eaw and its progenitor in the nearby galaxy NGC 6946. Progenitor observations in the Ks band in 4 epochs from 1 year to 1 day before the explosion reveal no significant variability in the progenitor star greater than 6% that last longer than 200 days. SN 2017eaw is a typical SN II-P with near-IR and mid-IR photometric evolution similar to those of SNe 2002hh and 2004et, other normal SNe II-P in the same galaxy. Spectroscopic ...

Tópico(s): Astrophysics and Star Formation Studies

2019 - IOP Publishing | The Astrophysical Journal

Artigo Acesso aberto Revisado por pares

Tamás Szalai, Ori D. Fox, Richard G. Arendt, E. Dwek, Jennifer E. Andrews, Geoffrey C. Clayton, A. V. Filippenko, J. Johansson, Patrick L. Kelly, Kelsie Krafton, A. P. Marston, Jon C. Mauerhan, Schuyler D. Van Dyk,

Here we present new - and, nevertheless, last - mid-infrared (mid-IR) data for supernovae (SNe) based on measurements with the Spitzer Space Telescope. Comparing our recent 3.6 and 4.5 $\mu$m photometry with previously published mid-IR and further multiwavelength datasets, we were able to draw some conclusions about the origin and heating mechanism of the dust in these SNe or in their environments, as well as on possible connection with circumstellar matter (CSM) originating from pre-explosion mass-loss ...

Tópico(s): Astrophysics and Star Formation Studies

2021 - IOP Publishing | The Astrophysical Journal

Artigo Acesso aberto Revisado por pares

Maria Niculescu-Duvaz, M. J. Barlow, Antonia Bevan, R. Wesson, D. Milisavljević, I. De Looze, Geoffrey C. Clayton, Kelsie Krafton, M. Matsuura, Ryan P. Brady,

Modelling the red-blue asymmetries seen in the broad emission lines of core-collapse supernovae (CCSNe) is a powerful technique to quantify total dust mass formed in the ejecta at late times ($>5$ years after outburst) when ejecta dust temperatures become too low to be detected by mid-IR instruments. Following our success in using the Monte Carlo radiative transfer code DAMOCLES to measure the dust mass evolution in SN~1987A and other CCSNe, we present the most comprehensive sample of dust mass measurements ...

Tópico(s): Astro and Planetary Science

2022 - Oxford University Press | Monthly Notices of the Royal Astronomical Society

Artigo Acesso aberto Revisado por pares

Antonia Bevan, Kelsie Krafton, R. Wesson, Jennifer E. Andrews, Edward Montiel, Maria Niculescu-Duvaz, M. J. Barlow, I. De Looze, Geoffrey C. Clayton,

Abstract The luminous Type IIn SN 2010jl shows strong signs of interaction between the SN ejecta and dense circumstellar material. Dust may be present in the unshocked ejecta; the cool, dense shell (CDS) between the shocks in the interaction region; or in the circumstellar medium (CSM). We present and model new optical and infrared photometry and spectroscopy of SN 2010jl from 82 to 1367 days since explosion. We evaluate the photometric and spectroscopic evolution using the radiative transfer codes ...

Tópico(s): Astro and Planetary Science

2020 - IOP Publishing | The Astrophysical Journal

Artigo Acesso aberto Revisado por pares

Kristal Markowitz,

... of Law.I wish to thank my parents, Krafton and Elizabeth Moore, for establishing the foundation, Professor ...

Tópico(s): Museums and Cultural Heritage

2001 - University of Oklahoma College of Law | American Indian Law Review

Artigo

John Stazinski,

... collection of stories, Volt. Here the place is Krafton, a fictional town set in the plains, that ... Winslow and giving it to the town of Krafton. That final move should be sentimental and schlocky, ... to be Heathcock's point. In towns like Krafton, time moves slowly, if at all. It's ...

Tópico(s): Short Stories in Global Literature

2011 - University of Nebraska Press | American book review/˜The œAmerican book review

Artigo

Rose Mambert,

... a Terry Pratchett-style comic fantasy, and Ash Krafton’s Demimonde series, which offers a fresh take ...

Tópico(s): American Literature and Culture

2013 - University of Nebraska Press | American book review/˜The œAmerican book review

Artigo Revisado por pares

Pratiksha Ashok,

PlayerUnknown’s Battlegrounds ( PUBG ), created by Krafton and Microsoft in 2017, is a battle royale game that blends last-man-standing gameplay with scavenging, survival and exploration elements. While ...

Tópico(s): FinTech, Crowdfunding, Digital Finance

2023 - Intellect | Journal of Gaming & Virtual Worlds

Artigo Acesso aberto Revisado por pares

Maria Niculescu-Duvaz, M. J. Barlow, W. R. Dunn, Antonia Bevan, Omar Ahmed, David Arkless, Jon Barker, Sidney Bartolotta, Liam Brockway, Dan E. Browne, Ubaid Esmail, Max Garner, Wiktoria Guz, Scarlett King, Hayri Kose, Madeline Lampstaes-Capes, Joseph Magen, Nicole Morrison, Kyaw Oo, Balvinder Paik, Joanne Primrose, Danny Quick, Anais Radeka, Anthony Rodney, Eleanor Sandeman, Fawad Sheikh, Camron Stansfield, Delayne Symister, Joshua A. Taylor, William Wilshere, R. Wesson, I. De Looze, Geoffrey C. Clayton, Kelsie Krafton, M. Matsuura,

Core-collapse supernovae (CCSNe) are potentially capable of producing large quantities of dust, with strong evidence that ejecta dust masses can grow significantly over extended periods of time. Red-blue asymmetries in the broad emission lines of CCSNe can be modelled using the Monte Carlo radiative transfer code DAMOCLES, to determine ejecta dust masses. To facilitate easier use of DAMOCLES, we present a Tkinter graphical user interface (GUI) running DAMOCLES. The GUI was tested by high school students ...

Tópico(s): Stellar, planetary, and galactic studies

2022 - Oxford University Press | Monthly Notices of the Royal Astronomical Society