Results 91 to 100 of about 1,373 (198)

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

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

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  

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
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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
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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

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
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Temporary EHBL-like behavior of Markarian 501 during July 2014 VHE flaring

European Physical Journal C: Particles and Fields
Markarian 501, a BL Lac object well-known as a high energy gamma-ray source, has exhibited several epochs of very high energy (VHE) gamma-ray flaring events when its synchrotron peak frequency shifted above $$10^{17}$$ 10 17 Hz, a signature of extreme ...
Sarira Sahu, A. U. Puga Oliveros, D. I. Páez-Sánchez, G. Sánchez-Colón, Subhash Rajpoot, M. E. Iglesias Martínez, Jose Guerra Carmenate, P. Fernández de Córdoba, Gaetano Lambiase   +8 more
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Unraveling the Hybrid Origins of the X-Ray Nonthermal Emission from IGR J17091–3624

The Astrophysical Journal
We present a comprehensive study based on multiwavelength observations from the NuSTAR, NICER, Swift, Fermi, NEOWISE, and ATCA telescopes during the 2022 outburst of the black-hole X-ray binary IGR J17091–3624.
Zikun Lin, Yanan Wang, Santiago del Palacio, Mariano Méndez, Shuang-Nan Zhang, Thomas D. Russell, Long Ji, Jin Zhang, Liang Zhang, Diego Altamirano, Jifeng Liu   +10 more
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Insight-HXMT Observations of the Extremely Bright GRB 221009A

The Astrophysical Journal
The Insight Hard X-ray Modulation Telescope (Insight-HXMT) detected GRB 221009A, the brightest gamma-ray burst (GRB) observed to date, with all its three telescopes, i.e., the High Energy (HE) telescope (20–250 keV), Medium Energy (ME) telescope (5–30 ...
Wen-Long Zhang, Wang-Chen Xue, Cheng-Kui Li, Shao-Lin Xiong, Gang Li, Yong Chen, Wei-Wei Cui, Xiao-Bo Li, Cong-Zhan Liu, Ming-Yu Ge, Wen-Jun Tan, Jia-Cong Liu, Chen-Wei Wang, Chao Zheng, Yan-Qiu Zhang, Yue Wang, Zhen Zhang, Shu-Xu Yi, Shuo Xiao, Ce Cai, Shuang-Xi Yi, Li-Ming Song, Lian Tao, Shu Zhang, Shuang-Nan Zhang   +24 more
doaj   +1 more source