Results 71 to 80 of about 49,186 (262)

Carbon Monoxide in type II supernovae

, 2001
Infrared spectra of two type II supernovae 6 months after explosion are presented. The spectra exhibit a strong similarity to the observations of SN 1987A and other type II SNe at comparable epochs.
Allen, B. Leibundgut, Bouanich, Chakerian, Cumming, Douglas, Fassia, Fassia, Gearhart, Gerardy, Graham, Hummer, J. Spyromilio, Lepp, Miller, Moorwood, Perryman, Persson, R. Gilmozzi, Roche, Sohn, Spyromilio, Spyromilio, Young   +23 more
core   +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

Building a Professional Imaginary of Writing Pedagogy: Working With Teacher Knowledge and Beliefs About Writing

Reading Research Quarterly, Volume 61, Issue 1, January/February/March 2026.
In this paper, The Professional Imaginary of Writing Pedagogy is presented as an ideal. This imaginary brings teacher knowledge about the social imaginary for literacy education into relation with teacher professional knowledge and beliefs about writing, to promote pedagogies and practices for writing that are inclusive, expansive, responsive and ...
Clare Dowdall
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

Are we survivors of the sudden past singularity?

European Physical Journal C: Particles and Fields, 2023
In this paper, we investigate the viability of cosmological models featuring a type II singularity that occurs during the past evolution of the Universe.
Adam Balcerzak, Tomasz Denkiewicz, Mateusz Lisaj   +2 more
doaj   +1 more source

On the nature of rapidly fading Type II supernovae

, 2015
It has been suggested that Type II supernovae with rapidly fading light curves (a.k.a. Type IIL supernovae) are explosions of progenitors with low-mass hydrogen-rich envelopes which are of the order of 1 Msun.
Blinnikov, Sergei I., Ergon, Mattias, Moriya, Takashi J., Pruzhinskaya, Maria V.   +3 more
core   +1 more source

The evolution of the peculiar Type Ia supernova SN 2005hk over 400 days [PDF]

, 2008
$UBVRI$ photometry and medium resolution optical spectroscopy of peculiar Type Ia supernova SN 2005hk are presented and analysed, covering the pre-maximum phase to around 400 days after explosion.
Anupama, G. C., Kawabata, Koji S., Maeda, Keiichi, Mazzali, Paolo A., Nomoto, Ken'ichi, Prabhu, T. P., Sahu, D. K., Tanaka, Masaomi, Tominaga, Nozomu   +8 more
core   +2 more sources

Hamas's October 7 Attack: Analysis of an “Antagonistic” Crisis

Public Administration Review, Volume 86, Issue 1, Page 87-96, January/February 2026.
ABSTRACT The aim of the article is to interpret the Hamas attack of October 7, 2023 in light of crisis management theories, seeking to draw from this event some general lessons about the nature of crises, their determinants, and how they are managed. More specifically, the article addresses three questions: (1) Why did Israel underestimate the warning ...
Federico Toth
wiley   +1 more source

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

Testing the Weak Cosmic Censorship Conjecture via Test Particle–Induced Overcharging/Overspinning of Kerr–Newman–Modified Gravity Black Hole

Advances in Astronomy, Volume 2026, Issue 1, 2026.
We examine the weak cosmic censorship conjecture (WCCC) violation by throwing a charged and rotating test particle into a Kerr–Newman–modified gravity black hole (KN–MOG BH). The result depends on several factors, such as the relative sign of the particle’s charge and its direction of rotation with respect to black hole (BH).
Waqar Ahmad, Abdul Rehman Kashif, Jose Gaite   +2 more
wiley   +1 more source