Zobrazeno 1 - 10
of 137
pro vyhledávání: '"Chatzopoulos, E."'
We explore the effects of rotation on convective carbon, oxygen, and silicon shell burning during the late stages of evolution in a 20 M-circle dot star. Using the Modules for Experiments in Stellar Astrophysics we construct one-dimensional (1D) stel
Externí odkaz:
http://hdl.handle.net/10150/621238
http://arizona.openrepository.com/arizona/handle/10150/621238
http://arizona.openrepository.com/arizona/handle/10150/621238
Autor:
Panagiotidou, E., Βoutou, A., Fouka, E., Papakosta, D., Chatzopoulos, E., Sourla, E., Markopoulou, A., Kioumis, I., Stanopoulos, I., Pitsiou, G.
Publikováno v:
In Pulmonology March-April 2024 30(2):104-112
We explore the possibility that the star alpha Orionis (Betelgeuse) is the outcome of a merger that occurred in a low mass ratio (q = M2/M1 = 0.07 - 0.25) binary system some time in the past hundreds of thousands of years. To that goal, we present a
Externí odkaz:
http://arxiv.org/abs/2005.04172
Pair-Instability Supernovae (PISNe) may signal the deaths of extremely massive stars in the local Universe or massive primordial stars after the end of the Cosmic Dark Ages. Hydrodynamic simulations of these explosions, performed in 1D, 2D, and 3D ge
Externí odkaz:
http://arxiv.org/abs/1902.06647
Autor:
Bilinski, Christopher, Smith, Nathan, Williams, G. Grant, Smith, Paul, Zheng, WeiKang, Graham, Melissa L., Mauerhan, Jon C., Andrews, Jennifer E., Filippenko, Alexei V., Akerlof, Carl, Chatzopoulos, E., Hoffman, Jennifer L., Huk, Leah, Leonard, Douglas C., Marion, G. H., Milne, Peter, Quimby, Robert M., Silverman, Jeffrey M., Vinkó, Jozsef, Wheeler, J. Craig, Yuan, Fang
We present photometry, spectra, and spectropolarimetry of supernova (SN) 2012ab, mostly obtained over the course of $\sim 300$ days after discovery. SN 2012ab was a Type IIn (SN IIn) event discovered near the nucleus of spiral galaxy 2MASXJ12224762+0
Externí odkaz:
http://arxiv.org/abs/1712.03370
The recent discovery of the unprecedentedly superluminous transient ASASSN-15lh (or SN 2015L) with its UV-bright secondary peak challenges all the power-input models that have been proposed for superluminous supernovae. Here we examine some of the fe
Externí odkaz:
http://arxiv.org/abs/1603.06926
Autor:
Smidt, Joseph, Whalen, Daniel J., Chatzopoulos, E., Wiggins, Brandon K., Chen, Ke-Jung, Kozyreva, Alexandra, Even, Wesley
Population III stars that die as pair-instability supernovae are usually thought to fall in the mass range of 140 - 260 M$_{\odot}$. But several lines of work have now shown that rotation can build up the He cores needed to encounter the pair instabi
Externí odkaz:
http://arxiv.org/abs/1411.5377
Autor:
Vinko, J., Yuan, F., Quimby, R. M., Wheeler, J. C., Ramirez-Ruiz, E., Guillochon, J., Chatzopoulos, E., Marion, G. H., Akerlof, C.
We present follow-up observations of an optical transient (OT) discovered by ROTSE on Jan. 21, 2009. Photometric monitoring was carried out with ROTSE-IIIb in the optical and Swift in the UV up to +70 days after discovery. The light curve showed a fa
Externí odkaz:
http://arxiv.org/abs/1410.6014
We study the effects of rotation on the dynamics, energetics and Ni-56 production of Pair Instability Supernova explosions by performing rotating two-dimensional ("2.5-D") hydrodynamics simulations. We calculate the evolution of eight low metallicity
Externí odkaz:
http://arxiv.org/abs/1308.4660
We present fits of generalized semi-analytic supernova (SN) light curve (LC) models for a variety of power inputs including Ni-56 and Co-56 radioactive decay, magnetar spin-down, and forward and reverse shock heating due to supernova ejecta-circumste
Externí odkaz:
http://arxiv.org/abs/1306.3447