Results 71 to 80 of about 13,324 (197)

The soft X-ray polarization in obscured AGN

, 2009
The soft X-ray emission in obscured active galactic nuclei (AGN) is dominated by emission lines, produced in a gas photoionized by the nuclear continuum and likely spatially coincident with the optical narrow line region (NLR). However, a fraction of the
Bianchi, Stefano, Chiaberge, Marco, Guainazzi, Matteo, Marinucci, Andrea, Matt, Giorgio, Tamborra, Francesco   +5 more
core   +1 more source

X-Ray Polarization Study of Pulsar Wind Nebulae with eXTP: Simulation Results and Scientific Prospects

The Astrophysical Journal
X-ray polarization observations of pulsar wind nebulae (PWNe) provide crucial insights into magnetic field structures and particle acceleration mechanisms.
Kuan Liu, Fei Xie, Ming-Yu Ge, Wei Deng, En-Wei Liang   +4 more
doaj   +1 more source

IXPE View of the Crab Pulsar Following the 2025 July 17 and August 6 Glitches

The Astrophysical Journal
The Crab pulsar experienced two relatively small glitches separated by only 20 days in 2025 September and October. Imaging X-ray Polarimetry Explorer (IXPE) observed the source twice, with delay times since the glitch epoch ranging between 35 and 75 days,
Paolo Soffitta, Niccolò Bucciantini, Josephine Wong, Denis González-Caniulef, Matteo Bachetti, Riccardo Ferrazzoli, Fei Xie, Enrico Costa, Maura Pilia, Nicolò Cibrario, Jack T. Dinsmore, Niccolò Di Lalla, Philip Kaaret, Kuan Liu, Tsunefumi Mizuno, Michela Negro, C.-Y. Ng, Nicola Omodei, Simone Pagliarella, Stefano Silvestri, Yi-Jung Yang, Martin C. Weisskopf   +21 more
doaj   +1 more source

Star-XP: A simulation framework for Polar-2/ low energy X-ray polarization detector

SoftwareX
Star-XP is a simulation framework specifically designed for the Low Energy X-ray Polarization Detector (LPD) onboard the POLAR-2 mission. It is capable of simulating the emission of particles from given sources and the interaction of these particles with
Di-Fan Yi, Qian Liu, Rui-Ting Ma, Bin-Long Wang, Hong-Bang Liu, Fei Xie, Huan-Bo Feng, Zu-Ke Feng, Yang-Heng Zheng   +8 more
doaj   +1 more source

Properties, mechanisms, and perspectives of ultrafast laser modifications in silicate glass volume

International Journal of Applied Glass Science, Volume 17, Issue 1, January 2026.
Abstract Ultrafast laser irradiation of glass enables highly localized structural transformations within the material's bulk, unlocking diverse applications in photonics, data storage, and microfabrication. Here, we provide a concise yet comprehensive overview of the main types of femtosecond laser‐induced modifications in silica‐based glasses (Types I,
Nadezhda Shchedrina, Matilde Sosa, Maxime Cavillon, Matthieu Lancry   +3 more
wiley   +1 more source

General relativistic x ray (UV) polarization rotations as a quantitative test for black holes [PDF]

It is now 11 years since a potentially easily observable and quantitative test for black holes using general relativistic polarization rotations was proposed (Stark and Connors 1977, and Connors and Stark 1977).
Stark, Richard F.
core   +1 more source

Stellar X-Ray Polarimetry [PDF]

, 2011
Most of the stellar end-state black holes, pulsars, and white dwarfs that are X-ray sources should have polarized X-ray fluxes. The degree will depend on the relative contributions of the unresolved structures.
Swank, J.
core   +1 more source

The magnetic field and geometry of the oblique shock in the jet of 3C 346

, 2009
We investigate the brightest regions of the kpc-scale jet in the powerful radio galaxy 3C 346, using new optical HST ACS/F606W polarimetry together with Chandra X-ray data and 14.9 GHz and 22.5 GHz VLA radio polarimetry.
Akujor, Anderson, Bahcall, Bridle, C. A. Padgett, Cawthorne, Cawthorne, Cotton, D. M. Worrall, de Koff, de Vries, Dey, Dulwich, E. S. Perlman, F. Dulwich, Fedorenko, Giovannini, Hardcastle, Hook, Keel, Kirk, Koekemoer, Laing, Lind, Lyutikov, M. Birkinshaw, Pavlovsky, Perlman, Perlman, Serkowski, Spencer, Wardle, Worrall, Worrall, Worrall   +34 more
core   +1 more source

Scattering Polarimetry in the Hard X-ray Range

Instruments
In one and a half years, the Imaging X-ray Polarimetry Explorer has demonstrated the role and the potentiality of Polarimetry in X-ray Astronomy. The next steps include extension to higher energies.
Enrico Costa
doaj   +1 more source

X-Ray and Gamma-Ray Polarization in Leptonic and Hadronic Jet Models of Blazars

, 2013
We present a theoretical analysis of the expected X-ray and gamma-ray polarization signatures resulting from synchrotron self-Compton emission in leptonic models, compared to the polarization signatures from proton synchrotron and cascade synchrotron ...
Boettcher, Markus, Zhang, Haocheng
core   +1 more source