Results 71 to 80 of about 48,520 (216)

A comparative study of Type II-P and II-L supernova rise times as exemplified by the case of LSQ13cuw [PDF]

, 2015
We report on our findings based on the analysis of observations of the Type II-L supernova LSQ13cuw within the framework of currently accepted physical predictions of core-collapse supernova explosions.
Anderson, J. P., Baltay, C., Benetti, S., Feindt, U., Fraser, M., Gall, E. E. E., González-Gaitán, S., Inserra, C., Jerkstrand, A., Kotak, R., Leibundgut, B., Maguire, K., McKinnon, R., Polshaw, J., Rabinowitz, D., Smartt, S. J., Sollerman, J., Sullivan, M., Valenti, S., Young, D.   +19 more
core   +5 more sources

Shock-cooling Constraints via Early-time Observations of the Type IIb SN 2022hnt

The Astrophysical Journal
We report the results of a rapid follow-up campaign on the Type IIb supernova (SN) 2022hnt. We present a daily, multiband, photometric follow-up using the Las Cumbres Observatory, the Zwicky Transient Facility, the orbiting Swift observatory, and the ...
Joseph R. Farah, D. Andrew Howell, Giacomo Terreran, Ido Irani, Jonathan Morag, Craig Pellegrino, Curtis McCully, Megan Newsome, Estefania Padilla Gonzalez, K. Azalee Bostroem, Griffin Hosseinzadeh, Moira Andrews, Logan Prust, Daichi Hiramatsu   +13 more
doaj   +1 more source

Room‐temperature crystal structures of [CH(NH2)2]3Sb2X9 (X = Br and I)

Acta Crystallographica Section C, Volume 82, Issue 3, Page 138-143, March 2026.
Two new vacancy‐ordered formamidinium antimony halide triple‐perovskites, FA3Sb2X9 {FA = [CH(NH2)2]+; X = Br and I}, measured by single‐crystal X‐ray diffraction are described.Crystals of formamidinium antimony, halides, FA3Sb2X9 {FA = [CH(NH2)2]+; X = Br− and I−} {or triformamidinium nonahalidodiantimony, (CH5N2)3[Sb2X9]}, have been synthesized using ...
Prajna Bhatt, Yuhan Liu, Anna Regoutz, Robert G. Palgrave   +3 more
wiley   +1 more source

Carnegie Supernova Project-II: Extending the Near-Infrared Hubble Diagram for Type Ia Supernovae to $z\sim0.1$

, 2018
The Carnegie Supernova Project-II (CSP-II) was an NSF-funded, four-year program to obtain optical and near-infrared observations of a "Cosmology" sample of $\sim100$ Type Ia supernovae located in the smooth Hubble flow ($0.03 \lesssim z \lesssim 0.10 ...
Anais, Jorge, Anderson, J. P., Ashall, C., Baltay, C., Baron, E., Burns, Christopher R., Busta, Luis, Campillay, Abdo, Castellón, Sergio, Contreras, Carlos, Corco, Carlos, Diamond, T., Folatelli, Gastón, Freedman, Wendy L., Galbany, L., Gall, Christa, Gonzalez, Consuelo, Goobar, A., Hadjiyska, Ellie, Hamuy, Mario, Hoeflich, P., Holmbo, Simon, Hsiao, E. Y., Kasliwal, Mansi, Krisciunas, Kevin, Lidman, C., Morrell, Nidia, Nugent, Peter E., Perlmutter, S., Persson, S. E., Phillips, M. M., Piro, Anthony L., Rabinowitz, David, Roth, Miguel, Ryder, Stuart D., Schmidt, Brian P., Serón, Jacqueline, Shappee, B. J., Stritzinger, Maximilian, Suntzeff, Nicholas B., Taddia, F., Torres, Simón, Uddin, Syed A., Walker, Emma S.   +43 more
core   +1 more source

SN 2024aecx: A Double-peaked Rapidly Evolving Type IIb Supernova at 11 Mpc

The Astrophysical Journal
We present the results of low-resolution spectroscopic and densely sampled multiband photometric follow-up of supernova (SN) 2024aecx. The SN was discovered in the spiral galaxy NGC 3521 (distance ∼ 11 Mpc) within a day after the explosion.
Xingzhu Zou, Brajesh Kumar, Rishabh Singh Teja, D. K. Sahu, Xinlei Chen, Avinash Singh, Weikang Lin, Xiangkun Liu, Dezi Liu, Hrishav Das, Mridweeka Singh, G. C. Anupama, Yu Pan, Guowang Du, Helong Guo, Tao Wang, Xufeng Zhu, Jujia Zhang, Yuan Fang, Chenxu Liu, Kaushik Chatterjee, Yuan-Pei Yang, Liping Li, Qian Zhai, Edoardo P. Lagioia, Xueling Du, Xinzhong Er, Jianhui Lian, Ziwei Li, Shiyan Zhong, Xiaowei Liu   +30 more
doaj   +1 more source

Light echoes - Type II supernovae

The Astrophysical Journal, 1987
Type II supernovae (SNs) light curves show a remarkable range of shapes. Data have been collected for the 12 Type II SNs that have light curve information for more than four months past maximum. Contrary to previous reports, it is found that (1) the decay rate after 100 days past maximum varies by almost an order of magnitude and (2) the light curve ...
openaire   +1 more source

Aluminum versus Gallium: Differences in Bis(bis(trimethylsilyl)methyl) Element Halides, Hydrides, and Oxygen‐Bridged E/P Frustrated Lewis Pairs

ChemistryEurope, Volume 4, Issue 2, February 2026.
Reacting Bis2GaBr (Bis = CH(SiMe3)2) with Bis2AlH selectively yields Bis2GaH, a monomeric hydride in solution, characterized by diffusion ordered spectroscopy NMR, infrared spectroscopy and indirectly via hydrogallation. A one‐pot route enables frustrated Lewis pairs Bis2EOPtBu2 (E = Al, Ga), with the gallium analog splitting H2 and showing a dynamic ...
Julian Buth, Maximilian J. Klingsiek, Yury V. Vishnevskiy, Andreas Mix, Jan-Hendrik Lamm, Beate Neumann, Hans-Georg Stammler, Norbert Werner Mitzel   +7 more
wiley   +1 more source

Bayesian estimation applied to multiple species [PDF]

, 2006
Observed data are often contaminated by undiscovered interlopers, leading to biased parameter estimation. Here we present BEAMS (Bayesian estimation applied to multiple species) which significantly improves on the standard maximum likelihood approach in ...
B. P. Schmidt, Bruce A. Bassett, J. Sollerman, M. Sullivan, Martin Kunz, N. Kaiser, Renée A. Hlozek   +6 more
core   +3 more sources

Spectropolarimetric Evolution of SN 2023ixf: An Asymmetric Explosion in a Confined Aspherical Circumstellar Medium

The Astrophysical Journal
We present complete spectropolarimetric coverage of the Type II supernova (SN) 2023ixf, ranging from 1 to 120 days after explosion. Polarimetry was obtained with the Kast double spectrograph on the Shane 3 m telescope at Lick Observatory.
Sergiy S. Vasylyev, Luc Dessart, Yi Yang, Alexei V. Filippenko, Kishore C. Patra, Thomas G. Brink, Lifan Wang, Ryan Chornock, Raffaella Margutti, Elinor L. Gates, Adam J. Burgasser, Huei Sears, Preethi R. Karpoor, Natalie LeBaron, Emma Softich, Christopher A. Theissen, Eli Wiston, WeiKang Zheng   +17 more
doaj   +1 more source

Optimized ACE2‐Fc fusion proteins with picomolar neutralization activity against highly evolved SARS‐CoV‐2 variants

Protein Science, Volume 35, Issue 2, February 2026.
Abstract The rapid evolution of severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) has compromised the efficacy of many authorized monoclonal antibody products. This highlights the need for alternative strategies, especially for vulnerable populations such as immunocompromised individuals.
Ferran Abancó, Ferran Tarrés‐Freixas, Rosalba Lepore, Elisa Molina‐Molina, Eloi Franco, Rytis Boreika, Edwards Pradenas, Dàlia Raïch‐Regué, Itziar Erkizia, Bonaventura Clotet, Alfonso Valencia, Júlia Vergara‐Alert, Joaquim Segalés, Jorge Carrillo, Nuria Izquierdo‐Useros, Julià Blanco, Benjamin Trinité   +16 more
wiley   +1 more source