Results 81 to 90 of about 1,428 (186)

The Imaging X-ray Polarimetry Explorer (IXPE) and New Directions for the Future

Instruments
An observatory dedicated to X-ray polarimetry has been operational since 9 December 2021. The Imaging X-ray Polarimetry Explorer (IXPE), a collaboration between NASA and ASI, features three X-ray telescopes equipped with detectors sensitive to linear ...
Paolo Soffitta
doaj   +1 more source

Hard X-ray sources from the high corona are an integral part of solar eruptions

Astronomy & Astrophysics
Context. Hard X-ray bremsstrahlung emissions are strong diagnostics of electron acceleration during the magnetic energy release process that drives solar flares.
Krucker Säm, Masuda Satoshi
doaj   +1 more source

3D MC. I. X-Ray Tomography Begins to Unravel the 3D Structure of a Molecular Cloud in our Galaxy’s Center

The Astrophysical Journal Letters
Astronomers have used observations of the Galactic gas and dust via infrared, microwave, and radio to study molecular clouds in extreme environments such as the Galactic center.
Samantha W. Brunker, Cara Battersby, Danya Alboslani, Maïca Clavel, Daniel L. Walker, Dani Lipman, H Perry Hatchfield, Régis Terrier   +7 more
doaj   +1 more source

Study of Silicon Photomultipliers for the GRIPS Calorimeter Module

Acta Polytechnica, 2013
GRIPS is a proposed gamma-ray (200 keV to 80 MeV) astronomy mission, which incorporates a pair-creation and Compton scattering telescope, along with X-ray and infrared telescopes.
Alexei Ulyanov, Lorraine Hanlon, Sheila McBreen, Suzanne Foley   +3 more
doaj  

Silicon pore X-ray optics for the NewAthena telescope

Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray
The European Space Agency (ESA), cosine and its partners have been developing for 20 years the Silicon Pore Optics (SPO) technology. SPO enables the next generation of space x-ray telescopes, with increased sensitivity and resolution. NewAthena, the New Advanced Telescope for High Energy Astrophysics, has just been endorsed by ESA as one of its Lclass ...
Collon, M., Abalo, L., Barrier, N., Bayer, A., de Borst, D., Castiglione, L., Crama, L., Chatbi, A., Eenkhoorn, N., Girou, D., Gunther, R., Harpur, J., Hauser, E., den Hollander, J., Jenkins, Y., Landgraf, B., Lassise, A., Keek, L., Kornig, C., Obwaller, S., Okma, B., Ribeiro, P., Rizos, C., Thete, A., Vacanti, G., Verhoeckx, S., Vervest, M., Visser, R., Voruz, L., Bavdaz, M., Ferreira, I., Wille, E., Smid, P., Bosman, M., Haneveld, J., Koelewijn, A., Lankwarden, J., Riekerink, M., Schurink, B., Start, R., Wijnperle, M., Cibik, L., Fechner, R., Krumrey, M., Skroblin, D., Burwitz, V., Christensen, F., Ferreira, D., Massahi, S., Sanz, D., Svendsen, S., Dunne, E., Lupton, P., Mundon, W., Rees, A., Colldelram, C., Heinis, D., Sanchez, A., Niewrzella, N., Basso, S., Moretti, A., Salmaso, B., Spiga, D.   +62 more
openaire   +3 more sources

Solar Flares as Electron Accelerators: Toward a Resolution of the Acceleration Efficiency Issue

The Astrophysical Journal
A major open issue concerning the active Sun is the effectiveness with which magnetic reconnection accelerates electrons in flares. A paper published by Nature in 2022 used microwave observations to conclude that the Sun is an almost ideal accelerator ...
Anna Volpara, Paolo Massa, Michele Piana, Anna Maria Massone, A. Gordon Emslie   +4 more
doaj   +1 more source

Smart Source Detection Framework for Lobster Eye Telescopes

The Astrophysical Journal Supplement Series
Lobster eye telescopes are designed to capture X-ray emissions from celestial objects across a broad field of view. However, the unique optical system of these telescopes leads to a cruciform pattern on the detector plane, complicating the detection of ...
Peng Jia, Yijun Zhang, Kaiyang Li, Yuan Liu, Haiwu Pan, Yushan Li   +5 more
doaj   +1 more source

Concept of a Double Tilted Rowland Spectrograph for X-Rays

The Astrophysical Journal
High-resolution spectroscopy in soft X-rays (
Hans Moritz Günther, Casey T. DeRoo, Ralf K. Heilmann, Edward Hertz   +3 more
doaj   +1 more source

Insights into the Properties of Type Ibn/Icn Supernovae and Their Progenitor Channels through X-Ray Emission

The Astrophysical Journal
Type Ibn/Icn supernovae (SNe Ibn/Icn), which are characterized by narrow helium or carbon lines that originated in hydrogen-poor dense circumstellar medium (CSM), provide new insights into the final evolution of massive stars.
Yusuke Inoue, Keiichi Maeda
doaj   +1 more source

Imaging black holes: a VLBI success story. [PDF]

Astrophys Space Sci
Zensus JA.
europepmc   +1 more source