Results 51 to 60 of about 108,040 (211)

An optical supernova associated with the X-ray flash XRF 060218

, 2006
Long-duration gamma-ray bursts (GRBs) are associated with type Ic supernovae that are more luminous than average and that eject material at very high velocities.
A. J. Castro-Tirado, A. Levan, A. S. Fruchter, A. V. Filippenko, AM Soderberg, AM Soderberg, AV Filippenko, BE Cobb, C. Dumas, C. Kouveliotou, C. Ledoux, D Malesani, D. A. Kann, D. Baade, D. N. Sauer, D. S. Wong, DJ Schlegel, DN Sauer, E. Cappellaro, E. Palazzi, E. Pian, E. Ramirez-Ruiz, E. Rol, E. W. Guenther, F. Frontera, F. Patat, H Tomita, J Deng, J Granot, J Hjorth, J. Deng, J. Greiner, J. Hjorth, J. P. U. Fynbo, J. Sollerman, JA Cardelli, JPU Fynbo, K Maeda, K. Kawabata, K. Maeda, K. Nomoto, KZ Stanek, L. Amati, L. Nicastro, L. Wang, M Modjaz, N Mirabal, N Tominaga, N. Masetti, N. R. Tanvir, O. Hainaut, P. A. Mazzali, P. Ferrero, P. M. Vreeswijk, P. Møller, P. O'Brien, PA Mazzali, PA Mazzali, R. A. M. J. Wijers, R. J. Foley, R. Starling, S. E. Woosley, S. Ellison, S. Klose, SE Woosley, SE Woosley, SY Sazonov, TJ Galama, W. Li   +68 more
core   +2 more sources

Establishing Indium in Frustrated Lewis Pair Chemistry: From Synthesis to Catalytic Applications

ChemistryEurope, EarlyView.
Not that hard: The effects of chemical hardness of the soft FLP tBu2InCH2PtBu2 and its pyridine‐adduct tBu2In(py)CH2PtBu2 were examined in adduct formation reactions toward H2, CO2, and CS2. The frustrated Lewis pair shows catalytic activity in the reduction of CO2 with pinacolborane.
Daniel N. Heuer, Jan‐Hendrik Lamm, Hans‐Georg Stammler, Beate Neumann, Andreas Mix, Yury V. Vishnevskiy, Norbert W. Mitzel   +6 more
wiley   +1 more source

Supernovae data and perturbative deviation from homogeneity [PDF]

, 2009
We show that a spherically symmetric perturbation of a dust dominated $\Omega=1$ FRW universe in the Newtonian gauge can lead to an apparent acceleration of standard candles and provide a fit to the magnitude-redshift relation inferred from the ...
A. Ishibashi, A. Krasinski, A. Paranjape, A. Paranjape, A.G. Riess ., D. Garfinkle, G. Lemaitre, G.F.R. Ellis, Gerasimos Rigopoulos, H. Bondi, I.M.H. Etherington, J. Plebanski, K. Enqvist, K. Tomita, K. Van Acoleyen, Kari Enqvist, M. Sasaki, M.-N. Celerier, Maria Mattsson, N. Mustapha, S. Rasanen, S. Rasanen, Supernova Cosmology Project collaboration, Supernova Search Team collaboration, T. Mattsson, T. Mattsson   +25 more
core   +1 more source

Ortho‐Carborane‐Derived Halogen‐Bonded Sandwich Complexes

Chemistry – A European Journal, EarlyView.
A systematic co‐crystallization‐study of a tridentate ortho‐carborane‐based halogen‐bond donor with halides was performed. Several association complexes are evaluated to give further insights into the halogen bond‐strength of this moiety. For iodide, rare octahedral coordination via a sandwich‐like complexation was observed in the solid state when ...
Christoph J. Vonnemann, Elric Engelage, Jas S. Ward, Kari Rissanen, Stefan M. Huber   +4 more
wiley   +1 more source

Trigonal Bipyramidal Clusters [Tl5]7−: Synthesis and Characterization of the Zintl Phase K7−xAxTl5 (A = Rb, Cs; 0 < x ≤ 2.35)

Chemistry – A European Journal, EarlyView.
Mixed alkali metals, potassium and additional rubidium or cesium, allow for the synthesis of a straightforward, electron‐precise Zintl phase K7−xAxTl5. The new phase is characterized by SCXRD, PXRD, and DFT. Its metastability is proven by DSC measurements.
Vanessa F. Schwinghammer, Tomáš Kovářík, Ilya G. Shenderovich, Ján Minár, Stefanie Gärtner   +4 more
wiley   +1 more source

Making the metaverse real

Digital Business, 2023
Key stakeholders across different industries with competing visions, motivations and technology bets are investing significant financial resources in developing the building blocks of the metaverse.
Tatiana Zalan, Paolo Barbesino
doaj   +1 more source

Dynamics and Conformational Stability of Chiral Bay‐Phenolate‐Substituted Twisted Octaazaperopyrenedioxides (OAPPDOs)

Chemistry – A European Journal, EarlyView.
Chiral octaazaperopyrenedioxide (OAPPDO) fluorophores were obtained by functionalizing with BINOL and related fragments bridging the bay position. They possess conformational flexibility but remarkable thermal stability with respect to racemization of the central chromophore, which allowed the study of their chiroptical properties, including circular ...
Bastian Rojas‐Deij, Lars Schneider, Tim Bruckhoff, Robert Eichelmann, Philipp Rohrmann, Raphael Candalh, Joachim Ballmann, Felix Deschler, Lutz H. Gade   +8 more
wiley   +1 more source

Hydrodynamic Studies of the Evolution of Recurrent, Symbiotic and Dwarf Novae: the White Dwarf Components are Growing in Mass

Open Astronomy, 2012
Symbiotic binaries are systems containing white dwarfs (WDs) and red giants. Symbiotic novae are those systems in which thermonuclear eruptions occur on the WD components.
Starrfield S., Timmes F. X., Iliadis C., Hix W. R., Arnett W. D., Meakin C., Sparks W. M.   +6 more
doaj   +1 more source

SNe Ia Redshift in a Nonadiabatic Universe

Universe, 2018
By relaxing the constraint of adiabatic universe used in most cosmological models, we have shown that the new approach provides a better fit to the supernovae Ia redshift data with a single parameter, the Hubble constant H0, than the standard ΛCDM
Rajendra P. Gupta
doaj   +1 more source

Upper limits on bolometric luminosities of ten type Ia supernova progenitors from Chandra observations [PDF]

, 2012
We present an analysis of Chandra observations of the position of ten nearby (< 25 Mpc) type Ia supernovae, taken before the explosions. No sources corresponding to progenitors were found in any of the observations.
Borkowski, Butler, Di, Di, Dickey, Drake, Elias-Rosa, Elias-Rosa, Filippenko, G. Nelemans, Gehrels, Gerardy, Gilfanov, Greiner, Güver, Hachisu, Harutyunyan, Henze, Henze, Hillebrandt, Iben, Immler, Itagaki, Itagaki, Kahabka, Kotak, Larionov, Larionov, Liu, Lorén-Aguilar, M. T. B. Nielsen, Mannucci, Meikle, Monard, Monard, Moore, Naito, Nelemans, Nielsen, Nomoto, Nugent, Orio, Pakmor, Patat, Perlmutter, Philips, Philips, Pignata, Quimby, R. Voss, Riess, Roelofs, Salvo, Schaefer, Schweizer, Shappee, Smartt, Sternberg, Stritzinger, Suzuki, Tutokov, van den Heuvel, van Kerkwijk, Voss, Voss, Wang, Wang, Webbink, Whelan, Yoon, Zhang   +70 more
core   +3 more sources