Results 31 to 40 of about 13,120 (212)
Advancing Hydrovoltaic Energy Harvesting from Wood through Cell Wall Nanoengineering
Advanced Functional Materials, Volume 33, Issue 4, January 20, 2023., 2023 Efficient hydrovoltaic wood power generators are fabricated based on highly porous wood with cellulosic nanofibril network filling the lumen through wood cell wall nanoengineering using a green, one‐step NaOH treatment. pH‐responsive device performance is observed with a potential up to 1 V and a remarkable power output of 1.35 µW cm−2 achieved under ...
Jonas Garemark +6 more
wiley +1 more source
Helium Emission in the Type Ic SN 1999cq [PDF]
, 2000 We present the first unambiguous detection of helium emission lines in spectra of Type Ic supernovae (SNe Ic). The presence of He I lines, with full width at half maximum ~ 2000 km/s, and the distinct absence of any other intermediate-width emission (e.g.
Alexei V. Filippenko +18 more
core +3 more sources
The Astrophysical Journal Letters, 2023 Whether binary neutron star mergers are the only astrophysical site of rapid neutron-capture process ( r -process) nucleosynthesis remains unknown.
Long Li, Shu-Qing Zhong, Zi-Gao Dai
doaj +1 more source
New Perspectives on Type Ic Supernovae [PDF]
, 1997 The Type Ic supernovae are probably "nearly-nude" core collapse events. They are thus of special interest in terms of their evolutionary origin, but also as the source of potential clues to the explosion process that may not be obtained from other supernovae.
Clocchiatti, A., Wheeler, J. C.
openaire +2 more sources
Evidence Against an Association Between Gamma-Ray Bursts and Type I Supernovae [PDF]
, 1998 We present a rigorous method, based on Bayesian inference, for calculating the odds favoring the hypothesis that any particular class of astronomical transients produce gamma-ray bursts over the hypothesis that they do not. We then apply this method to a
Graziani, C., Lamb, D. Q., Marion, G. H.
core +4 more sources
X-ray and radio bright type Ic SN 2002ap -- a hypernova without an associated GRB [PDF]
, 2002 Combined X-ray (0.3 -10 keV) and Radio (0.61 and 1.42 GHz) observations of the type Ic SN 2002ap are used here, to determine the origins of the prompt X-ray and Radio emission from this source.Our analysis of the XMM-Newton observations suggests that the
Chandra, P., Ray, A., Sutaria, F. K.
core +4 more sources
The Astrophysical Journal, 2023 Stripped-envelope (SE) supernovae (SNe) were considered as the explosions of single massive stars with strong stellar winds, while later observations favor binary origins.
Hsin-Pei Chen +2 more
doaj +1 more source
Gamma‐Ray Bursts and Type Ic Supernova SN 1998bw [PDF]
The Astrophysical Journal, 1999 Recently a Type Ic supernova, SN 1998bw, was discovered coincident with a gamma-ray burst, GRB 980425. The supernova had unusual radio, optical, and spectroscopic properties. We explore here models based upon helium stars in the range 9 - 14 Msun and carbon-oxygen stars 6 - 11 Msun which experience unusually energetic explosions (kinetic energy 0.5 - 2.
Woosley, S, Eastman, R, Schmidt, Brian
openaire +3 more sources
A potential progenitor for the Type Ic supernova 2017ein [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 We report the first detection of a credible progenitor system for a Type Ic supernova (SN Ic), SN 2017ein. We present spectra and photometry of the SN, finding it to be similar to carbon-rich, low-luminosity SNe Ic. Using a post-explosion Keck adaptive optics image, we precisely determine the position of SN 2017ein in pre-explosion \hst\ images ...
Charles D Kilpatrick +11 more
openaire +2 more sources
The Astrophysical Journal Letters, 2023 With the advent of high-cadence, all-sky automated surveys, supernovae (SNe) are now discovered closer than ever to their dates of explosion. However, young premaximum light follow-up spectra of Type Ic SNe (SNe Ic), probably arising from the most ...
Marc Williamson +19 more
doaj +1 more source