Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Jeffery, David J."'
Autor:
Chen, Xingzhuo, Jeffery, David J., Zhong, Ming, McClenny, Levi, Braga-Neto, Ulisses, Wang, Lifan
We use physics informed neural networks (PINNs) to solve the radiative transfer equation and calculate a synthetic spectrum for a Type Ia supernova (SN~Ia) SN 2011fe. The calculation is based on local thermodynamic equilibrium (LTE) and 9 elements ar
Externí odkaz:
http://arxiv.org/abs/2211.05219
Autor:
Wang, Xiaofeng, Wang, Lifan, Filippenko, Alexei V., Baron, Eddie, Kromer, Markus, Jack, Dennis, Zhang, Tianmeng, Aldering, Greg, Antilogus, Pierre, Arnett, David, Baade, Dietrich, Barris, Brian J., Benetti, Stefano, Bouchet, Patrice, Burrows, Adam S., Canal, Ramon, Cappellaro, Enrico, Carlberg, Raymond, di Carlo, Elisa, Challis, Peter, Crotts, Arlin, Danziger, John I., Della Valle, Massimo, Fink, Michael, Foley, Ryan J., Fransson, Claes, Gal-Yam, Avishay, Garnavich, Peter, Gerardy, Chris L., Goldhaber, Gerson, Hamuy, Mario, Hillebrandt, Wolfgang, Hoeflich, Peter A., Holland, Stephen T., Holz, Daniel E., Hughes, John P., Jeffery, David J., Jha, Saurabh W., Kasen, Dan, Khokhlov, Alexei M., Kirshner, Robert P., Knop, Robert, Kozma, Cecilia, Krisciunas, Kevin, Lee, Brian C., Leibundgut, Bruno, Lentz, Eric J., Leonard, Douglas C., Lewin, Walter H. G., Li, Weidong, Livio, Mario, Lundqvist, Peter, Maoz, Dan, Matheson, Thomas, Mazzali, Paolo, Meikle, Peter, Miknaitis, Gajus, Milne, Peter, Mochnacki, Stefan, Nomoto, Ken'Ichi, Nugent, Peter E., Oran, Elaine, Panagia, Nino, Perlmutter, Saul, Phillips, Mark M., Pinto, Philip, Poznanski, Dovi, Pritchet, Christopher J., Reinecke, Martin, Riess, Adam, Ruiz-Lapuente, Pilar, Scalzo, Richard, Schlegel, Eric M., Schmidt, Brian, Siegrist, James, Soderberg, Alicia M., Sollerman, Jesper, Sonneborn, George, Spadafora, Anthony, Spyromilio, Jason, Sramek, Richard A., Starrfield, Sumner G., Strolger, Louis G., Suntzeff, Nicholas B., Thomas, Rollin, Tonry, John L., Tornambe, Amedeo, Truran, James W., Turatto, Massimo, Turner, Michael, Van Dyk, Schuyler D., Weiler, Kurt, Wheeler, J. Craig, Wood-Vasey, Michael, Woosley, Stan, Yamaoka, Hitoshi
Publikováno v:
Astrophys.J.749:126-142,2012
We present ultraviolet (UV) spectroscopy and photometry of four Type Ia supernovae (SNe 2004dt, 2004ef, 2005M, and 2005cf) obtained with the UV prism of the Advanced Camera for Surveys on the Hubble Space Telescope. This dataset provides unique spect
Externí odkaz:
http://arxiv.org/abs/1110.5809
Autor:
Branch, David, Jeffery, David J., Parrent, Jerod, Baron, E., Troxel, M. A., Stanishev, V., Keithley, Melissa, Harrison, Joshua, Bruner, Christopher
A comparative study of optical spectra of Type Ia supernovae (SNe Ia) obtained near 1 week, 3 weeks, and 3 months after maximum light is presented. Most members of the four groups that were defined on the basis of maximum light spectra in Paper II (c
Externí odkaz:
http://arxiv.org/abs/0712.2436
Autor:
Baron, E., Jeffery, David J., Branch, David, Bravo, Eduardo, Garcia-Senz, Domingo, Hauschildt, Peter H.
We calculate detailed NLTE synthetic spectra of a Pulsating Reverse Detonation (PRD) model, a novel explosion mechanism for Type Ia supernovae. While the hydro models are calculated in 3-D, the spectra use an angle averaged hydro model and thus some
Externí odkaz:
http://arxiv.org/abs/0709.4177
Publikováno v:
NewAstron.Rev.51:524-538,2007
Type Ia SNe (SNe Ia) are thought to come from carbon-oxygen white dwarfs that accrete mass from binary companions until they approach the Chandrasekhar limit, ignite carbon, and undergo complete thermonuclear disruption. A survey of the observed type
Externí odkaz:
http://arxiv.org/abs/astro-ph/0703415
Autor:
Parrent, Jerod, Branch, David, Troxel, M. A., Casebeer, D., Jeffery, David J., Ketchum, W., Baron, E., Serduke, F. J. D., Filippenko, Alexei V.
Synthetic spectra generated with the parameterized supernova synthetic-spectrum code SYNOW are compared to spectra of the unusual Type Ib supernova 2005bf. We confirm the discovery by Folatelli et al. (2006) that very early spectra (about 30 days bef
Externí odkaz:
http://arxiv.org/abs/astro-ph/0701198
A previously unpublished ultralow-dispersion spectrum of Sanduleak -69 202, the stellar progenitor of SN 1987A, is presented and the uncertain presupernova evolution of Sanduleak -69 202 is discussed.
Comment: 9 pages including 2 figures, accept
Comment: 9 pages including 2 figures, accept
Externí odkaz:
http://arxiv.org/abs/astro-ph/0611033
Autor:
Jeffery, David J., Mazzali, Paolo A.
Publikováno v:
AIPConf.Proc.924:401-406,2007
Giant steps is a technique to accelerate Monte Carlo radiative transfer in optically-thick cells of astrophysical atmospheres by greatly reducing the number of Monte Carlo steps needed to propagate photon packets through such cells. Giant steps repla
Externí odkaz:
http://arxiv.org/abs/astro-ph/0611002
Howell et al. have reported the discovery of SN Ia SN 2003fg (SNLS-03D3bb) and conclude that SN 2003fg is very likely a super-Chandrasekhar-mass SN Ia perhaps with a mass of order 2 solar masses. Their work is the first strong evidence that has been
Externí odkaz:
http://arxiv.org/abs/astro-ph/0609804
Autor:
Jeffery, David J., Ketchum, Wesley, Branch, David, Baron, E., Elmhamdi, Abouazza, Danziger, I. J.
Two quantitative tests DIFF1 and DIFF2 for measuring goodness-of-fit between two locally-normalized supernova spectra are presented. Locally-normalized spectra are obtained by dividing a spectrum by the same spectrum smoothed over a wavelength interv
Externí odkaz:
http://arxiv.org/abs/astro-ph/0607084