Results 81 to 90 of about 32,797 (265)

Infant Core-collapse Supernovae with Circumstellar Interactions from KMTNet. I. Luminous Transitional Case of KSP-SN-2022c

The Astrophysical Journal
We present BVi multiband high-cadence observations of a Type II supernova (SN) KSP-SN-2022c from a star-forming galaxy at z ≃ 0.041 from its infant to nebular phase. Early light-curve fitting with a single power law is consistent with the first detection
Nan Jiang, Dae-Sik Moon, Yuan Qi Ni, Maria R. Drout, Hong Soo Park, Santiago González-Gaitán, Sang Chul Kim, Youngdae Lee, Ernest Chang   +8 more
doaj   +1 more source

Near-infrared and Optical Observations of Type Ic SN 2021krf: Luminous Late-time Emission and Dust Formation

The Astrophysical Journal, 2023
We present near-infrared (NIR) and optical observations of the Type Ic supernova (SN Ic) SN 2021krf obtained between days 13 and 259 at several ground-based telescopes.
Aravind P. Ravi, Jeonghee Rho, Sangwook Park, Seong Hyun Park, Sung-Chul Yoon, T. R. Geballe, Jozsef Vinkó, Samaporn Tinyanont, K. Azalee Bostroem, Jamison Burke, Daichi Hiramatsu, D. Andrew Howell, Curtis McCully, Megan Newsome, Estefania Padilla Gonzalez, Craig Pellegrino, Regis Cartier, Tyler Pritchard, Morten Andersen, Sergey Blinnikov, Yize Dong, Peter Blanchard, Charles D. Kilpatrick, Peter Hoeflich, Stefano Valenti, Alexei V. Filippenko, Nicholas B. Suntzeff, Ji Yeon Seok, R. Könyves-Tóth, Ryan J. Foley, Matthew R. Siebert, David O. Jones   +31 more
doaj   +1 more source

Nucleosynthesis Calculations from Core-Collapse Supernovae [PDF]

, 2008
We review some of the uncertainties in calculating nucleosynthetic yields, focusing on the explosion mechanism. Current yield calculations tend to either use a piston, energy injection, or enhancement of neutrino opacities to drive an explosion.
Bennett, Michael, Diehl, Steven, Fryer, Christopher L., Herwig, Falk, Hirschi, Raphael, Hungerford, Aimee, Magkotsios, Georgios, Pignatari, Marco, Rockefeller, Gabriel, Timmes, Francis X., Young, Patrick   +10 more
core   +2 more sources

Magnetic Fields in Core Collapse Supernovae: Possibilities and Gaps

, 2004
Spectropolarimetry of core collapse supernovae has shown that they are asymmetric and often, but not universally, bi-polar. The Type IIb SN1993J and similar events showed large scatter in the Stokes parameter plane.
Akiyama, Shizuka, Wheeler, J. Craig
core   +1 more source

Managing and mitigating future public health risks: Planetary boundaries, global catastrophic risk, and inclusive wealth

Risk Analysis, Volume 45, Issue 7, Page 1607-1631, July 2025.
Abstract There are two separate conceptualizations for assessing existential risks: Planetary Boundaries (PBs) and global catastrophic risks (GCRs). While these concepts are similar in principle, their underpinning literatures tend not to engage with each other.
Eoin McLaughlin, Matthias Beck
wiley   +1 more source

When IIb Ceases To Be: Bridging the Gap between IIb and Short-plateau Supernovae

The Astrophysical Journal
Hydrogen-rich supernovae (SNe) span a range of hydrogen envelope masses at core collapse, producing diverse light curves from extended plateaus in Type IIP SNe to double-peaked Type IIb SNe (SNe IIb).
Joseph R. Farah, D. Andrew Howell, Daichi Hiramatsu, Curtis McCully, Moira Andrews, Megan Newsome, Estefania Padilla Gonzalez, Craig Pellegrino, Edo Berger, Peter Blanchard, Sebastian Gomez, Harsh Kumar, K. Azalee Bostroem, Yuan Qi Ni, A. Gagliano, Aravind P. Ravi   +15 more
doaj   +1 more source

Chiral transport of neutrinos in supernovae

EPJ Web of Conferences, 2017
The conventional neutrino transport theory for core-collapse supernovae misses one key property of neutrinos: the left-handedness. The chirality of neutrinos modifies the hydrodynamic behavior at the macroscopic scale and leads to topological transport ...
Yamamoto Naoki
doaj   +1 more source

Life on Mars? The physiological perspective

Experimental Physiology, EarlyView.
Ronan M. G. Berg, Damian M. Bailey
wiley   +1 more source

A Slowly Pulsating Run‐Away B Star at High Galactic Latitude Ejected From a Spiral Arm

Astronomische Nachrichten, Volume 346, Issue 5, June 2025.
ABSTRACT We report the discovery of the young B6 V run‐away star LAMOST J083323.18 + 430825.4, 2.5 kpc above the Galactic plane. Its atmospheric parameters and chemical composition are determined from LAMOST spectra, indicating normal composition. Effective temperature (Teff$$ {T}_{\mathrm{eff}} $$ = 14,500$$ \mathrm{14,500} $$ K) and gravity (logg ...
Ulrich Heber, Maximilian Halenke, Aakash Bhat, Veronika Schaffenroth   +3 more
wiley   +1 more source

SN 2022jli: A Type Ic Supernova with Periodic Modulation of Its Light Curve and an Unusually Long Rise

The Astrophysical Journal Letters, 2023
We present multiwavelength photometry and spectroscopy of SN 2022jli, an unprecedented Type Ic supernova discovered in the galaxy NGC 157 at a distance of ≈ 23 Mpc. The multiband light curves reveal many remarkable characteristics. Peaking at a magnitude
T. Moore, S. J. Smartt, M. Nicholl, S. Srivastav, H. F. Stevance, D. B. Jess, S. D. T. Grant, M. D. Fulton, L. Rhodes, S. A. Sim, R. Hirai, P. Podsiadlowski, J. P. Anderson, C. Ashall, W. Bate, R. Fender, C. P. Gutiérrez, D. A. Howell, M. E. Huber, C. Inserra, G. Leloudas, L. A. G. Monard, T. E. Müller-Bravo, B. J. Shappee, K. W. Smith, G. Terreran, J. Tonry, M. A. Tucker, D. R. Young, A. Aamer, T.-W. Chen, F. Ragosta, L. Galbany, M. Gromadzki, L. Harvey, P. Hoeflich, C. McCully, M. Newsome, E. P. Gonzalez, C. Pellegrino, P. Ramsden, M. Pérez-Torres, E. J. Ridley, X. Sheng, J. Weston   +44 more
doaj   +1 more source