Results 71 to 80 of about 13,120 (212)

Investigations of supernovae and supernova remnants in the era of SKA [PDF]

, 2015
Two main physical mechanisms are used to explain supernova explosions: thermonuclear explosion of a white dwarf(Type Ia) and core collapse of a massive star (Type II and Type Ib/Ic).
Cui, Xiaohong, Tian, Wenwu, Wang, Lingzhi, Wang, Xiaofeng, Zhu, Hui   +4 more
core   +1 more source

SUPER-LUMINOUS TYPE Ic SUPERNOVAE: CATCHING A MAGNETAR BY THE TAIL [PDF]

The Astrophysical Journal, 2013
34 pages, 19 figures, accepted by ApJ.
Inserra, C., Smartt, S.J., Jerkstrand, A., Valenti, S., Fraser, M., Wright, Darryl, Smith, K., Chen, Ting-Wan, Kotak, R., Pastorello, A., Nicholl, M., Bresolin, F., Kudritzki, R.P., Benetti, S., Botticella, M.T., Burgett, W.S., Chambers, K.C., Ergon, M., Flewelling, H., Fynbo, J.P.U., Geier, S., Hodapp, K.W., Howell, D.A., Huber, M., Kaiser, N., Leloudas, G., Magill, L., Magnier, E.A., McCrum, M.G., Metcalfe, N., Price, P.A., Rest, A., Sollerman, J., Sweeney, W., Taddia, F., Taubenberger, S., Tonry, J.L., Wainscoat, R.J., Waters, C., Young, D.   +39 more
openaire   +6 more sources

A progenitor for the extremely luminous Type Ic supernova 2007bi [PDF]

Monthly Notices of the Royal Astronomical Society: Letters, 2011
Abstract SN 2007bi is an extremely luminous Type Ic supernova. This supernova is thought to be evolved from a very massive star, and two possibilities have been proposed for the explosion mechanism. One possibility is a pair-instability supernova with an MCO∼ 100 M⊙ CO core progenitor.
Yoshida, Takashi, Umeda, Hideyuki
openaire   +2 more sources

Simulations of Accretion Powered Supernovae in the Progenitors of Gamma Ray Bursts [PDF]

, 2012
Observational evidence suggests a link between long duration gamma ray bursts (LGRBs) and Type Ic supernovae. Here, we propose a potential mechanism for Type Ic supernovae in LGRB progenitors powered solely by accretion energy.
Arnett, Balbus, Beloborodov, Beloborodov, Binney, Bisnovatyi-Kogan, Bisnovatyi-Kogan, Bloom, Burrows, Calder, Chen, Chieffi, Chornock, Christodoulou, Christopher C. Lindner, Cobb, Dessart, Di Matteo, Fryer, Fryxell, Fujimoto, Galama, Garnavich, Hamuy, Heger, Hjorth, Igumenshchev, Igumenshchev, Igumenshchev, Joggerst, Kasen, Kawabata, Khokhlov, Kohri, Kuhfuß, Landau, Lazzati, Lazzati, Lee, Limongi, Lindner, López-Cámara, López-Cámara, MacFadyen, MacFadyen, Malesani, Marek, Matheson, Mazzali, Mazzali, McKinney, Mezzacappa, Milosavljević, Miloš Milosavljević, Mirabal, Modjaz, Morsony, Morsony, Murphy, Murphy, Nagakura, Nagakura, Nagataki, Nordhaus, Nousek, O'Brien, O'Connor, Paczyński, Pawan Kumar, Perna, Podsiadlowski, Popham, Pruet, Pruet, Raskin, Reichart, Rongfeng Shen, Seitenzahl, Sekiguchi, Shakura, Soderberg, Stanek, Surman, Thompson, Thompson, Timmes, Wheeler, Woosley, Young, Zhang, Zimmerman   +90 more
core   +2 more sources

Pulsed‐Laser‐Driven CO2 Reduction Reaction for the Control of the Photoluminescence Quantum Yield of Organometallic Gold Nanocomposites

Small Science, Volume 4, Issue 7, July 2024.
Pulsed‐laser‐driven CO2 reduction reaction allows the synthesis of carbon‐monoxide‐rich gold nanoparticles and organometallic nanocomposites composed by gold nanoclusters and carboxylic salts, characterized by a photoluminescent quantum yield of 20% in the visible (blue) region.
Tahir, Guilherme C. Concas, Mariana Gisbert, Marco Cremona, Fernando Lazaro, Marcelo Eduardo H. Maia da Costa, Suellen D. T. De Barros, Ricardo Q. Aucélio, Tatiana Saint Pierre, José Marcus Godoy, Diogo Mendes, Gino Mariotto, Nicola Daldosso, Francesco Enrichi, Alexandre Cuin, Aldebarã F. Ferreira, Walter M. de Azevedo, Geronimo Perez, Celso SantAnna, Braulio Soares Archanjo, Yordy E. Licea Fonseca, Andre L. Rossi, Francis L. Deepak, Rajwali Khan, Quaid Zaman, Sven Reichenberger, Theo Fromme, Giancarlo Margheri, José R. Sabino, Gabriella Fibbi, Mario Del Rosso, Anastasia Chillà, Francesca Margheri, Anna Laurenzana, Tommaso Del Rosso   +34 more
wiley   +1 more source

The Optical Light Curve of GRB 221009A: The Afterglow and the Emerging Supernova

The Astrophysical Journal Letters, 2023
We present extensive optical photometry of the afterglow of GRB 221009A. Our data cover 0.9–59.9 days from the time of Swift and Fermi gamma-ray burst (GRB) detections.
M. D. Fulton, S. J. Smartt, L. Rhodes, M. E. Huber, V. A. Villar, T. Moore, S. Srivastav, A. S. B. Schultz, K. C. Chambers, L. Izzo, J. Hjorth, T.-W. Chen, M. Nicholl, R. J. Foley, A. Rest, K. W. Smith, D. R. Young, S. A. Sim, J. Bright, Y. Zenati, T. de Boer, J. Bulger, J. Fairlamb, H. Gao, C.-C. Lin, T. Lowe, E. A. Magnier, I. A. Smith, R. Wainscoat, D. A. Coulter, D. O. Jones, C. D. Kilpatrick, P. McGill, E. Ramirez-Ruiz, K.-S. Lee, G. Narayan, V. Ramakrishnan, R. Ridden-Harper, A. Singh, Q. Wang, A. K. H. Kong, C.-C. Ngeow, Y.-C. Pan, S. Yang, K. W. Davis, A. L. Piro, C. Rojas-Bravo, J. Sommer, S. K. Yadavalli   +48 more
doaj   +1 more source

Revealing the binary origin of Type Ic superluminous supernovae through nebular hydrogen emission

, 2015
We propose that nebular H-alpha emission as detected in the Type Ic superluminous supernova iPTF13ehe stems from matter which is stripped from a companion star when the supernova ejecta collide with it.
Chen, Ting-Wan, Langer, Norbert, Liu, Zheng-Wei, Mackey, Jonathan, Moriya, Takashi J.   +4 more
core   +1 more source

The Host Galaxies of Fast-Ejecta Core-Collapse Supernovae [PDF]

, 2014
Spectra of broad-lined Type Ic supernovae (SN Ic-BL), the only kind of SN observed at the locations of long-duration gamma-ray bursts (LGRBs), exhibit wide features indicative of high ejecta velocities (~0.1c).
Filippenko, Alexei V., Kelly, Patrick L., Kocevski, Daniel, Modjaz, Maryam   +3 more
core   +3 more sources

Exploitation of Mechanistic Product Selectivity for the Two‐Step Synthesis of Optically Active Bio‐Derived Cyclic Carbonates Incorporating Amino Acids

European Journal of Organic Chemistry, Volume 27, Issue 21, June 3, 2024.
Synthesis of cyclic carbonates bearing amino acid functionality is described. The use of enantiopure amino acids and glycidol, in the initial formation of the substrate, combined with the stereo‐retentive mechanism of the cycloaddition with CO2 furnishes bio‐derived cyclic carbonates which display a range of optical activities.
Diego Jaraba Cabrera, Lucía Álvarez‐Miguel, Adrián Hernando Rodríguez, Alex Hamilton, Marta E. G. Mosquera, Christopher J. Whiteoak   +5 more
wiley   +1 more source

A SPECTROSCOPICALLY NORMAL TYPE Ic SUPERNOVA FROM A VERY MASSIVE PROGENITOR [PDF]

The Astrophysical Journal, 2012
We present observations of the Type Ic supernova (SN Ic) 2011bm spanning a period of about one year. The data establish that SN 2011bm is a spectroscopically normal SN Ic with moderately low ejecta velocities and with a very slow spectroscopic and photometric evolution (more than twice as slow as SN 1998bw).
Valenti, Stefano, Taubenberger, Stefan, Pastorello, Andrea, Aramyan, Levon, Teresa Botticella, Maria, Fraser, Morgan, Benetti, Stefano, J. Smartt, Stephen, Cappellaro, Enrico, Elias-Rosa, Nancy, Ergon, Mattias, Magill, Lindsay, Magnier, Eugene, Kotak, Rubina, A. Price, Paul, Sollerman, Jesper, Tomasella, Lina, Turatto, Massimo, Wright, Darryl E., Astronomico di Padova, INAF-Osservatorio   +19 more
openaire   +5 more sources