Results 61 to 70 of about 1,428 (186)

Mitigating Polarization Leakage in Gas Pixel Detectors through Hybrid Machine Learning and Analytic Event Reconstruction

The Astrophysical Journal
Spatially resolved polarization measurements of extended X-ray sources are expanding our understanding of the emission mechanisms and magnetic field properties involved.
Nicoló Cibrario, Michela Negro, Raffaella Bonino, Nikita Moriakov, Luca Baldini, Niccoló Di Lalla, Alessandro Di Marco, Sergio Fabiani, Andrea Frassá, Alessio Gorgi, Fabio La Monaca, Luca Latronico, Simone Maldera, Alberto Manfreda, Fabio Muleri, Nicola Omodei, John Rankin, Carmelo Sgró, Stefano Silvestri, Paolo Soffitta, Stefano Tugliani   +20 more
doaj   +1 more source

X-Ray Emission of Nearby Low-mass and Sunlike Stars with Directly Imageable Habitable Zones

The Astrophysical Journal Supplement Series
Stellar X-ray and UV radiation can significantly affect the survival, composition, and long-term evolution of the atmospheres of planets in or near their host star’s habitable zone (HZ).
Breanna A. Binder, Sarah Peacock, Edward W. Schwieterman, Margaret C. Turnbull, Azariel Y. Virgen, Stephen R. Kane, Alison Farrish, Katherine Garcia-Sage   +7 more
doaj   +1 more source

Influence of TiC and TiN Ceramic Reinforcements on the Microstructure, Thermal Expansion Behavior, and Tensile Properties of Invar 36 Manufactured by Laser Powder Bed Fusion

Advanced Engineering Materials, Volume 28, Issue 21, 4 November 2026.
This study examines Invar composites reinforced with titanium carbide (TiC) and titanium nitride (TiN) using laser powder bed fusion (LPBF). It presents the influence of reinforcements on microstructure, tensile properties, and thermal expansion. Results show that TiC effectively strengthens Invar while maintaining low thermal expansion, whereas TiN ...
Ayodeji Nathaniel Oyedeji, Natasha Sacks, Johannes Pötschke, Björn Matthey   +3 more
wiley   +1 more source

Optical‐Field Engineering and Instrumentation in Brillouin Microscopy

Advanced Photonics Research, Volume 7, Issue 11, November 2026.
Brillouin microscopy provides label‐free mechanical contrast through gigahertz light–acoustic interactions. This Review examines how optical‐field engineering and instrument architecture shape spectral precision, acquisition throughput, background rejection, spatial performance, and optical exposure.
Kangwen Tong, Feihong Lin, Xiaoyu Yang, Emiliano Descrovi, Xu Liu, Qing Yang   +5 more
wiley   +1 more source

The Telescope Calibration of the Imaging X-Ray Polarimetry Explorer

The Astronomical Journal
Fifty years after the very first sounding rocket measurement of cosmic X-ray polarization, the Imaging X-ray Polarimetry Explorer (IXPE) mission has effectively opened a new window into the X-ray sky.
Brian D. Ramsey, Jeffery K. Kolodziejczak, Wayne H. Baumgartner, Nicholas E. Thomas, Stephen D. Bongiorno, Philip Kaaret, Stephen L. O’Dell, Allyn Tennant, Martin C. Weisskopf, Sergio Fabiani, Fabio Muleri, Paolo Soffitta, Enrico Costa, Alessandro Di Marco, Riccardo Ferrazzoli, Fabio La Monaca, John Rankin, Ajay Ratheesh, Alessio Trois, Luca Baldini, Ronaldo Bellazzini, Alessandro Brez, Luca Latronico, Leonardo Lucchesi, Alberto Manfreda, Massimo Minuti, Leonardo Orsini, Michele Pinchera, Carmelo Sgrò, Gloria Spandre   +29 more
doaj   +1 more source

Fifty Years After the Discovery of the First Stellar-Mass Black Hole: A Review of Cyg X-1

Galaxies
Around 50 years ago, the famous bet between Stephen Hawking and Kip Thorne on whether Cyg X-1 hosts a stellar-mass black hole became a well-known story in the history of black hole science.
Jiachen Jiang
doaj   +1 more source

Soft X‐Ray Telescopes of the Future: Trade Study of Micro‐Pore Optic Size for Imaging Dayside Magnetospheric Features

Journal of Geophysical Research: Space Physics, Volume 131, Issue 11, November 2026.
Abstract This study compares the capabilities of different sized micro‐pore optic (MPO) based soft X‐ray telescopes and their ability to observe features and phenomena of the magnetosheath at Earth. The basic science is the starting point and different instrument properties are applied to test which would be capable of studying features of the near ...
Emil A. Atz, Brian M. Walsh, Kip D. Kuntz, Maxime Grandin, Markus Battarbee, Yann Pfau‐Kempf, Minna Palmroth   +6 more
wiley   +1 more source

Optics for Nano-Satellite X-Ray Monitor

Open Astronomy, 2015
The Schmidt lobster eye design for a grazing incidence X-ray optics provides a field of view of the order of many degrees, for this reason it can be a convenient approach for the construction of space X-ray monitors.
Tichý Vladimír, Burrows David N., Prieskorn Zachary, Hudec René   +3 more
doaj   +1 more source

Energy Spectra of High Energy Helium An Extended and Improved Data Product From SOHO EPHIN

Space Weather, Volume 24, Issue 11, November 2026.
Abstract Context. The Electron Proton Helium INstrument (EPHIN) aboard the SOlar and Heliospheric Observatory (SOHO) is a particle telescope that measures energetic protons and Helium particles with kinetic energies above 4 MeV/nuc and electrons with kinetic energies above 150 KeV. Located at the Lagrangian point L1 of the Earth‐Sun system, it provides
M. Hörlöck, B. Heber, S. Jensen, M. Köberle, P. Kühl, H. Sierks   +5 more
wiley   +1 more source

Modular One‐Pot Access to π‐Expanded Tetrakis(Phenothiazinyl)‐Silanes With Broadly Tunable Redox and Emission Properties

Chemistry – A European Journal, Volume 32, Issue 39, 22 October 2026.
A library of 21 tetrakis(phenothiazinyl)‐substituted silanes with broadly variable substituent decoration, which are fully reversible multistage redox systems with intense tunable emission from deep blue to yellow–green (441–533 nm), was rapidly synthesized by bromine–lithium exchange/borylation–Suzuki coupling of tetrakis(4‐bromophenyl)silane or by ...
Thomas P. M. Merke, Lysander Presser, Leonard Karl, Christian Ganter, Thomas J. J. Müller   +4 more
wiley   +1 more source