Results 111 to 120 of about 2,618 (181)

JWST Observations of SN 2024ggi. I. Interpretation and Model Comparison of the Type II Supernova 2024ggi at 55 Days past Explosion

The Astrophysical Journal
We present panchromatic 0.4–21 μ m observations of the nearby (∼7.2 Mpc) Type II supernova (SN) 2024ggi, obtained during the plateau phase at ∼55 days past explosion. Our data set includes JWST spectra spanning 1.7–14 μ m, mid-infrared (MIR) imaging at 7.
E. Baron, C. Ashall, J. M. DerKacy, P. Hoeflich, K. Medler, M. Shahbandeh, E. Fereidouni, C. M. Pfeffer, T. Mera, W. B. Hoogendam, S. Shiber, K. Auchettl, P. J. Brown, C. R. Burns, A. Burrow, D. A. Coulter, M. Engesser, G. Folatelli, O. Fox, L. Galbany, M. Guolo, J. T. Hinkle, Mark E. Huber, E. Y. Hsiao, T. de Jaeger, D. O. Jones, S. Kumar, J. Lu, P. A. Mazzali, N. Morrell, M. M. Phillips, A. Rest, N. B. Suntzeff, B. J. Shappee, Jennifer Shi, M. D. Stritzinger, L. Strolger, T. Temim, S. Tinyanont, M. Tucker, L. Wang, Q. Wang, Y. Yang   +42 more
doaj   +1 more source

Physical properties of long-rising type II supernovae

Astronomy & Astrophysics
Context. The supernova (SN) 1987A, with its long-rising (≳40 days) light curve, defines a rare subclass of type II SNe known as 1987A-like events. Representing only ∼1–3% of all core-collapse SNe and often found in low-metallicity environments, their ...
Cosentino S. P., Inserra C., Pumo M. L.
doaj   +1 more source

SN 2024abfl: A Flat-plateau, Low-luminosity Type IIP Supernova with Early Circumstellar Matter Interaction

The Astrophysical Journal
We present photometric and spectroscopic observations of SN 2024abfl, a low-luminosity Type IIP supernova (LLSN) discovered shortly after explosion. The transient reached a peak absolute magnitude of M _V  = −14.9 and exhibited an extended, flat plateau ...
Madison Gerard, Jennifer E. Andrews, Geoffrey C. Clayton, David J. Sand, K. Azalee Bostroem, Jeniveve Pearson, Raya Dastidar, Aravind P. Ravi, Conor L. Ransome, Bhagya Subrayan, Griffin Hosseinzadeh, Brian Hsu, Yize Dong, Manisha Shrestha, Stefano Valenti, Nathan Smith, Daryl Janzen, M. J. Lundquist, Nicolás Meza, Saurabh W. Jha, Kate D. Alexander, Collin Christy, Noah Franz, Lindsey A. Kwok, Moira Andrews, Joseph Farah, Daichi Hiramatsu, D. Andrew Howell, Curtis McCully, Kathryn Wynn, Réka Könyves-Tóth, Xiaofeng Wang, Alexei V. Filippenko, Thomas G. Brink   +33 more
doaj   +1 more source

A Type II Supernovae Constraint on $ν_e$-$ν_s$

, 1993
plain Tex 11 pages, 3 figures available upon request from the authors. (shi6@oddjob.uchicago.edu, sigl@oddjob)
Shi, Xiangdong, Sigl, Guenter
openaire   +2 more sources

Spectropolarimetry of Type II supernovae

Astronomy & Astrophysics
The explosion processes of supernovae (SNe) are imprinted in their explosion geometries. The recent discovery of several highly aspherical core-collapse SNe is significant, and studying these is regarded as being crucial in order to understand the underlying explosion mechanism.
Nagao, T., Patat, F., Cikota, A., Baade, D., Mattila, S., Kotak, R., Kuncarayakti, H., Bulla, M., Ayala, B.   +8 more
openaire   +4 more sources

A Natural ≳100× Telescope: Discovery of the Strongly Lensed Type II SN 2025mkn at z = 1.37

The Astrophysical Journal Letters
We present the discovery of SN 2025mkn, a gravitationally lensed Type II supernova. First detected as a blue transient in Zwicky Transient Facility (ZTF), 0 $\mathop{.}\limits{^{\prime\prime} }$ 83 from a z = 0.42 elliptical galaxy, the follow-up SNIFS ...
Cameron Lemon, Ariel Goobar, Joel Johansson, Edvard Mörtsell, Steve Schulze, Igor Andreoni, Aleksandra Bochenek, Seán J. Brennan, Malte Busmann, Michael Coughlin, Kaustav K. Das, Suhail Dhawan, Christoffer Fremling, Anjasha Gangopadhyay, Daniel Gruen, Xander J. Hall, Anna Y. Q. Ho, Mansi M. Kasliwal, Daniel A. Perley, Mickael Rigault, Genevieve Schroeder, Mathew Smith, Jesper Sollerman, Jean J. Somalwar, Robert Stein, Stephen Thorp, Alice Townsend, Jacob L. Wise, Lin Yan, Nikki Arendse, Eric C. Bellm, Tracy X. Chen, Andrew Drake, Frank J. Masci, Josiah Purdum, Roger Smith, Jason T. Hinkle, T. Emil Rivera-Thorsen, Benjamin J. Shappee, Michael A. Tucker, Jessica Aguilar, Steven Ahlen, Greg Aldering, Segev BenZvi, Davide Bianchi, David Brooks, Todd Claybaugh, Axel de la Macorra, John Della Costa, Arjun Dey, Peter Doel, Brenna Flaugher, Andreu Font-Ribera, Jaime E. Forero-Romero, Enrique Gaztañaga, Satya Gontcho A. Gontcho, Gaston Gutierrez, Dragan Huterer, Mustapha Ishak, Jorge Jimenez, Dick Joyce, Stephanie Juneau, Robert Kehoe, Alex G. Kim, David Kirkby, Theodore Kisner, Anthony Kremin, Ofer Lahav, Martin Landriau, Laurent Le Guillou, Michael E. Levi, Marc Manera, Aaron Meisner, Ramon Miquel, John Moustakas, Seshadri Nadathur, Brendan O’Connor, Nathalie Palanque-Delabrouille, Antonella Palmese, Will J. Percival, Ignasi Pérez-Ràfols, Claire Poppett, Francisco Prada, Graziano Rossi, Eusebio Sanchez, David Schlegel, Michael Schubnell, Arman Shafieloo, Joseph Silber, David Sprayberry, Gregory Tarlé, Benjamin A. Weaver, Hu Zou   +92 more
doaj   +1 more source

Understanding Type Ia supernovae through their host galaxies using the SDSS-II Supernova Survey [PDF]

, 2013
The recent discovery of the accelerating expansion of the Universe and thus the existence of dark energy was made possible by the study of Type Ia supernovae. These thermonuclear explosions of white dwarfs are excellent standardizable candles that can be
Ravi Ryan Gupta, Gupta, Ravi Ryan
core   +1 more source

Final Moments. III. Explosion Properties and Progenitor Constraints of CSM-interacting Type II Supernovae

The Astrophysical Journal
We present analysis of the plateau and late-time phase properties of a sample of 39 Type II supernovae (SNe II) that show narrow, transient, high-ionization emission lines (i.e., “IIn-like”) in their early-time spectra from interaction with confined ...
W. V. Jacobson-Galán, L. Dessart, K. W. Davis, K. A. Bostroem, C. D. Kilpatrick, R. Margutti, A. V. Filippenko, R. J. Foley, R. Chornock, G. Terreran, D. Hiramatsu, M. Newsome, E. Padilla Gonzalez, C. Pellegrino, D. A. Howell, J. P. Anderson, C. R. Angus, K. Auchettl, T. G. Brink, R. Cartier, D. A. Coulter, T. de Boer, M. R. Drout, N. Earl, K. Ertini, J. R. Farah, D. Farias, C. Gall, H. Gao, M. A. Gerlach, F. Guo, A. Haynie, G. Hosseinzadeh, A. L. Ibik, S. W. Jha, D. O. Jones, D. Langeroodi, N. LeBaron, E. A. Magnier, A. L. Piro, S. I. Raimundo, A. Rest, S. Rest, R. Michael Rich, C. Rojas-Bravo, H. Sears, K. Taggart, V. A. Villar, R. J. Wainscoat, X.-F. Wang, A. R. Wasserman, S. Yan, Y. Yang, J. Zhang, W. Zheng   +54 more
doaj   +1 more source

The Pursuit of the Hubble Constant Using Type II Supernovae [PDF]

Part of the book series: Springer Series in Astrophysics and CosmologyThe use of multiple independent methods with their own systematic uncertainties is crucial for resolving the ongoing tension between local and distant measurements of the Hubble ...
Jaeger, T. de, Galbany, Lluís
core   +1 more source

SN 2022jox: An Extraordinarily Ordinary Type II SN with Flash Spectroscopy

The Astrophysical Journal
We present high-cadence optical and ultraviolet (UV) observations of the Type II supernova (SN), SN 2022jox which exhibits early spectroscopic high-ionization flash features of H i , He ii , C iv , and N iv that disappear within the first few days after ...
Jennifer E. Andrews, Jeniveve Pearson, Griffin Hosseinzadeh, K. Azalee Bostroem, Yize Dong, Manisha Shrestha, Jacob E. Jencson, David J. Sand, S. Valenti, Emily Hoang, Daryl Janzen, M. J. Lundquist, Nicolás Meza, Samuel Wyatt, Saurabh W. Jha, Chris Simpson, Joseph Farah, Estefania Padilla Gonzalez, D. Andrew Howell, Curtis McCully, Megan Newsome, Craig Pellegrino, Giacomo Terreran   +22 more
doaj   +1 more source