Results 71 to 80 of about 5,709 (225)

Two Micron‐Size Dark Dimensions

Fortschritte der Physik, Volume 73, Issue 8, August 2025.
Abstract Two extra dimensions of micron scale might simultaneously address the gauge and cosmological hierarchy problems. In this paper various observational bounds in scenarios with one and two large extra dimensions are examined, to see if they are compatible with the micron scale.
Luis A. Anchordoqui, Ignatios Antoniadis, Dieter Lüst   +2 more
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

Life on Mars? The physiological perspective

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

Infant Core-collapse Supernova with Circumstellar Interactions from KMTNet. II. Luminous, Long-lasting Case of KSP-SN-2020f

The Astrophysical Journal
We present photometric and spectroscopic observations of a luminous, long-lasting (LLL) Type IIn supernova (SN) KSP-SN-2020f found in a dwarf host galaxy at z = 0.1 from the KMTNet SN Program.
Ernest Chang, Dae-Sik Moon, Patrick Sandoval, Matthew C. H. Leung, Yuan Qi Ni, Santiago González-Gaitán, Youngdae Lee, Hong Soo Park, Sang Chul Kim, Nan Jiang   +9 more
doaj   +1 more source

Explosion Mechanisms of Core-Collapse Supernovae [PDF]

Annual Review of Nuclear and Particle Science, 2012
Supernova theory, numerical and analytic, has made remarkable progress in the past decade. This progress was made possible by more sophisticated simulation tools, especially for neutrino transport, improved microphysics, and deeper insights into the role of hydrodynamic instabilities.
openaire   +3 more sources

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

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

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

Probing the Low-mass End of Core-collapse Supernovae Using a Sample of Strongly-stripped Calcium-rich Type IIb Supernovae from the Zwicky Transient Facility

The Astrophysical Journal, 2023
The fate of stars in the zero-age main-sequence (ZAMS) range ≈8–12 M _⊙ is unclear. They could evolve to form white dwarfs or explode as electron-capture supernovae (SNe) or iron core-collapse SNe (CCSNe).
Kaustav K. Das, Mansi M. Kasliwal, Christoffer Fremling, Sheng Yang, Steve Schulze, Jesper Sollerman, Tawny Sit, Kishalay De, Anastasios Tzanidakis, Daniel A. Perley, Shreya Anand, Igor Andreoni, C. Barbarino, K. Brudge, Andrew Drake, Avishay Gal-Yam, Russ R. Laher, Viraj Karambelkar, S. R. Kulkarni, Frank J. Masci, Michael S. Medford, Abigail Polin, Harrison Reedy, Reed Riddle, Yashvi Sharma, Roger Smith, Lin Yan, Yi Yang, Yuhan Yao   +28 more
doaj   +1 more source

Progenitors of Core-Collapse Supernovae [PDF]

Proceedings of the International Astronomical Union, 2017
AbstractMassive stars have a strong impact on their surroundings, in particular when they produce a core-collapse supernova at the end of their evolution. In these proceedings, we review the general evolution of massive stars and their properties at collapse as well as the transition between massive and intermediate-mass stars.
R. Hirschi, D. Arnett, A. Cristini, C. Georgy, C. Meakin, I. Walkington   +5 more
openaire   +2 more sources