Results 61 to 70 of about 48,520 (216)

Nucleosynthesis in Type II supernovae and the abundances in metal-poor stars [PDF]

, 1998
We explore the effects on nucleosynthesis in Type II supernovae of various parameters (mass cut, neutron excess, explosion energy, progenitor mass) in order to explain the observed trends of the iron-peak element abundance ratios ([Cr/Fe], [Mn/Fe], [Co ...
Adam Burrows, Barbuy B., Edvardsson B., Friedrich‐Karl Thielemann, Gratton R. G., Gratton R. G., Gratton R. G., Gratton R. G., Hashimoto M., Hideyuki Umeda, Ken'ichi Nomoto, Magain P., Molaro P., Molaro P., Nissen P. E., Nomoto K., Primas F., Schaller G., Shigeyama T., Takayoshi Nakamura, Tsujimoto T., Zhao G.   +21 more
core   +4 more sources

Late-time Optical and X-Ray Emission Evolution of the Oxygen-rich SN 1996cr

The Astrophysical Journal
When the ejecta of a supernova (SN) interact with the progenitor star's circumstellar environment, a strong shock is driven back into the ejecta, causing the material to become bright optically and in X-rays.
Daniel Patnaude, Kathryn E. Weil, Robert A. Fesen, Dan Milisavljevic, Ralph P. Kraft   +4 more
doaj   +1 more source

Engineering a Stable Solid–Electrolyte Interphase through a Novel Trifluoromethyl‐Free Lithium Salt for Lithium Metal Polymer Batteries

ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 2, March 2026.
The motivation behind the development of the new lithium salt LiDFFSI is to combine the advantages of both LiFSI and LiDFSI salts. LiDFFSI offers high ionic conductivity and enhanced compatibility with aluminum current collectors. Additionally, it promotes the formation of a conductive SEI layer rich in LiF and LiH, which contributes to an extended ...
Lorena García, David Fraile‐Insagurbe, Izaskun Serna, Itziar Aldalur, Leire Meabe, Mikel Arrese‐Igor, Rosalía Cid, Julen Etxabe, Michel Armand, Maria Martinez‐Ibañez   +9 more
wiley   +1 more source

An ASCA Study of the Heavy Element Distribution in Clusters of Galaxies

, 2000
We perform a spatially resolved X-ray spectroscopic study of a set of 11 relaxed clusters of galaxies observed by the ROSAT/PSPC and ASCA/SIS. Using a method which corrects for the energy dependent effects of the ASCA PSF based on ROSAT images, we ...
A. Finoguenov, Arnaud M., Balogh M., Cappellaro E., Dell’Antonio I., Dupke R., Edge A. C., Fukazawa Y., Gibson B. K., Hobbs I. S., Kikuchi K., Kroupa P., L. P. David, Mewe R., Mitchell R., T. J. Ponman, Tamura T., Tanaka Y.   +17 more
core   +1 more source

Probing the Shock Breakout Signal of SN 2024ggi from the Transformation of Early Flash Spectroscopy

The Astrophysical Journal Letters
We present early-time, hour-to-day cadence spectroscopy of the nearby Type II supernova (SN II) 2024ggi, which was discovered at a phase when the SN shock had just emerged from the red supergiant (RSG) progenitor star.
Jujia Zhang, Luc Dessart, Xiaofeng Wang, Qian Zhai, Yi Yang, Liping Li, Han Lin, Giorgio Valerin, Yongzhi Cai, Zhen Guo, Lingzhi Wang, Zeyi Zhao, Zhenyu Wang, Shengyu Yan   +13 more
doaj   +1 more source

Precursors of Supernovae from Mass Eruption: Prospects for Early Warning of Nearby Core-collapse Supernovae

The Astrophysical Journal, 2023
Recent observations of a large fraction of Type II supernovae (SNe) show traces of dense circumstellar medium (CSM) very close to the progenitor star. If this CSM is created by eruptive mass loss several months before core collapse, the eruption itself ...
Daichi Tsuna, Yuki Takei, Toshikazu Shigeyama   +2 more
doaj   +1 more source

Magnetorotational Mechanism of Supernova Type II Explosion

International Astronomical Union Colloquium, 2005
SummaryResults of 2D simulations of the magnetorotational mechanism of supernova type II are presented. Amplification of toroidal magnetic field of the star due to differential rotation of the star leads to the transformation of the rotational (gravitational) energy to the energy of the supernova explosion. In our simulation the energy of the explosion
Moiseenko, S. G., Bisnovatyi-Kogan, G. S., Ardeljan, N. V.   +2 more
openaire   +2 more sources

First whole genome sequence of a diploid crop wild relative of the Andean tuber “oca”: Annotation and comparative genomic analysis of Oxalis oulophora

The Plant Genome, Volume 19, Issue 1, March 2026.
Abstract Oxalis oulophora, a diploid species closely related to the octoploid Andean tuber crop oca (Oxalis tuberosa), was selected for whole‐genome sequencing to aid in understanding the origins of polyploidy and domestication in oca and its relatives (crop wild relatives).
Dilrini Vanrooyen, Eve Emshwiller
wiley   +1 more source

Discovery and Extensive Follow-up of SN 2024ggi, a Nearby Type IIP Supernova in NGC 3621

The Astrophysical Journal
We present the discovery and early observations of the nearby Type II supernova (SN) 2024ggi in NGC 3621 at 6.64 ± 0.3 Mpc. The SN was caught $5.{8}_{-2.9}^{+1.9}$ hr after its explosion by the ATLAS survey.
Ting-Wan Chen, Sheng Yang, Shubham Srivastav, Takashi J. Moriya, Stephen J. Smartt, Sofia Rest, Armin Rest, Hsing Wen Lin, Hao-Yu Miao, Yu-Chi Cheng, Amar Aryan, Chia-Yu Cheng, Morgan Fraser, Li-Ching Huang, Meng-Han Lee, Cheng-Han Lai, Yu-Hsuan Liu, Aiswarya Sankar.K, Ken W. Smith, Heloise F. Stevance, Ze-Ning Wang, Joseph P. Anderson, Charlotte R. Angus, Thomas de Boer, Kenneth Chambers, Hao-Yuan Duan, Nicolas Erasmus, Michael Fulton, Hua Gao, Joanna Herman, Wei-Jie Hou, Hsiang-Yao Hsiao, Mark E. Huber, Chien-Cheng Lin, Hung-Chin Lin, Eugene A. Magnier, Ka Kit Man, Thomas Moore, Chow-Choong Ngeow, Matt Nicholl, Po-Sheng Ou, Giuliano Pignata, Yu-Chien Shiau, Julian Silvester Sommer, John L. Tonry, Xiao-Feng Wang, Richard Wainscoat, David R. Young, You-Ting Yeh, Jujia Zhang   +49 more
doaj   +1 more source

Energy Partition at a Collisionless Supercritical Quasi‐Parallel Shock

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Shocks in collisionless astrophysical plasmas redistribute some of the incident flow energy into both thermal and non‐thermal energy. Quantifying the partition of that energy amongst various particle species or their sub‐populations, and electromagnetic energy, represents a fundamental goal of shock physics.
Steven J. Schwartz, Karlheinz J. Trattner, Savvas Raptis, Robert E. Ergun, Lynn B. Wilson III, Roman G. Gomez, Ian J. Cohen, Daniel J. Gershman, Katherine A. Goodrich, Harald Kucharek, Tien Vo   +10 more
wiley   +1 more source