Results 31 to 40 of about 3,094 (200)

Spectropolarimetry of Type Ibc Supernovae [PDF]

Proceedings of the International Astronomical Union, 2011
AbstractStudying a multi-dimensional structure of supernovae (SNe) gives important constraints on the mechanism of the SN explosion. Polarization measurement is one of the most powerful methods to study the explosion geometry of extragalactic SNe. Especially, Type Ib/c SNe are the ideal targets because the core of the explosion is bare.
Tanaka, M., Kawabata, K., Hattori, T., Mazzali, P., Aoki, K., Iye, M., Maeda, K., Nomoto, K., Pian, E., Sasaki, T., Yamanaka, M.   +10 more
openaire   +2 more sources

Spectropolarimetry of stripped envelope core collapse supernovae [PDF]

, 2019
Over the past 30 years, spectropolarimetry has proven to be a great tool to probe the 3D geometry of core collapse supernovae (CCSNe). The number of high-quality multi-epoch spectropolarimetric data sets for CCSNe remains quite low, however, due to the ...
Stevance, H.F.
core   +4 more sources

Polarization Radiometric Calibration in Laboratory for a Channeled Spectropolarimeter

Applied Sciences, 2020
The process of radiometric calibration would be coupled with the polarization properties of an optical system for spectropolarimetry, which would have significant influences on reconstructed Stokes parameters.
Wenhe Xing, Xueping Ju, Jian Bo, Changxiang Yan, Bin Yang, Shuyan Xu, Junqiang Zhang   +6 more
doaj   +1 more source

Spectropolarimetry of the Circinus Galaxy

, 1997
5 pages, 4 figures, need A&A latex style files.
E. Oliva, MARCONI, ALESSANDRO, A. Cimatti, S. di Serego Alighieri   +3 more
openaire   +3 more sources

Spectropolarimetry of a Decaying Sunspot Penumbra [PDF]

The Astrophysical Journal, 2008
We report on high angular resolution, high precision spectropolarimetric measurements of a decaying sunspot. The spot gradually lost its penumbra during the course of three days. In the late stages of evolution where the only remnant of the spot is a naked umbra, we find small-scale inhomogeneities in the magnetic canopy surrounding it.
Rubio, L. R. Bellot, Tritschler, A., Pillet, V. Martinez   +2 more
openaire   +2 more sources

SPECTROPOLARIMETRY OF β Cephei TYPE STAR γ Pegasi

Odessa Astronomical Publications, 2017
Results of an intensive spectropolarimetric study of the small-amplitude purely radial pulsating β Cephei- type star γ Pegasi are presented. It was shown that residual intensity, full width at half maximum and equivalent width of the He I 6678 line vary
V. V. Butkovskaya
doaj   +1 more source

Magnetic Fields in Solar Plage Regions: Insights from High-sensitivity Spectropolarimetry

The Astrophysical Journal Letters, 2023
Plage regions are patches of concentrated magnetic field in the Sun’s atmosphere where hot coronal loops are rooted. While previous studies have shed light on the properties of plage magnetic fields in the photosphere, there are still challenges in ...
J. M. da Silva Santos, K. Reardon, G. Cauzzi, T. Schad, V. Martínez Pillet, A. Tritschler, F. Wöger, R. Hofmann, J. Stauffer, H. Uitenbroek   +9 more
doaj   +1 more source

Molecular basis of the interactions between the disordered Neh4 and Neh5 domains of Nrf2 and CBP/p300 in oxidative stress response. [PDF]

Protein Sci
Abstract Nuclear factor erythroid 2‐related factor 2 (Nrf2) is a major transcription factor that functions in maintaining redox homeostasis in cells. It mediates the transcription of cytoprotective genes in response to environmental and endogenous stresses to prevent oxidative damage. Thus, Nrf2 plays a significant role in chemoprevention.
Karunatilleke NC, Brickenden A, Choy WY.
europepmc   +2 more sources

Probing the geometry of supernovae with spectropolarimetry [PDF]

AIP Conference Proceedings, 2000
We present results from a spectropolarimetric survey of young supernovae completed at the Keck Observatory, including at least one example from each of the major supernova types: Ia (1997dt), Ib (1998T, 1997dq), Ib/c-pec (1997ef), IIn (1997eg), and II-P (1997ds). All objects show evidence for intrinsic polarization, suggesting that asphericity may be a
Leonard, Douglas C., Filippenko, Alexei V., Matheson, Thomas   +2 more
openaire   +2 more sources

Silicon Channeled Spectropolarimeter for On‐Chip Single‐Detector Stokes Spectroscopy

Advanced Photonics Research, 2022
Compact and low‐cost spectropolarimeters are desirable in many fields for probing the wavelength‐dependent polarization state of light. Conventional spectropolarimetry systems use bulky, free‐space optical components or require at least four ...
Zhongjin Lin, Huijie Wang, Simon Bélanger-de Villers, Qifeng Li, Wei Shi   +4 more
doaj   +1 more source