Results 121 to 130 of about 7,225,990 (222)

Orbital Modulation of Gamma Rays up to 100 TeV from LS 5039

The Astrophysical Journal Letters
Gamma-ray binaries are luminous in gamma rays, composed of a compact object orbiting a massive companion star. The interaction between these two objects can drive relativistic outflows, either jets or winds, in which particles can be accelerated to ...
R. Alfaro, M. Araya, J. C. Arteaga-Velázquez, D. Avila Rojas, H. A. Ayala Solares, R. Babu, P. Bangale, E. Belmont-Moreno, A. Bernal, K. S. Caballero-Mora, T. Capistrán, A. Carramiñana, S. Casanova, U. Cotti, J. Cotzomi, S. Coutiño de León, D. Depaoli, P. Desiati, N. Di Lalla, R. Diaz Hernandez, B. L. Dingus, M. A. DuVernois, K. Engel, T. Ergin, C. Espinoza, K. L. Fan, K. Fang, J. A. García-González, H. Goksu, A. Gonzalez Muñoz, J. A. González, M. M. González, J. A. Goodman, S. Groetsch, J. P. Harding, S. Hernández-Cadena, I. Herzog, J. Hinton, D. Huang, F. Hueyotl-Zahuantitla, P. Hüntemeyer, S. Kaufmann, D. Kieda, A. Lara, J. Lee, H. León Vargas, J. T. Linnemann, A. L. Longinotti, G. Luis-Raya, K. Malone, O. Martinez, J. Martínez-Castro, J. A. Matthews, P. Miranda-Romagnoli, J. A. Morales-Soto, E. Moreno, M. Mostafá, M. Najafi, L. Nellen, M. U. Nisa, N. Omodei, E. Ponce, Y. Pérez Araujo, E. G. Pérez-Pérez, C. D. Rho, A. Rodriguez Parra, D. Rosa-González, M. Roth, H. Salazar, D. Salazar-Gallegos, A. Sandoval, M. Schneider, G. Schwefer, J. Serna-Franco, A. J. Smith, Y. Son, R. W. Springer, O. Tibolla, K. Tollefson, I. Torres, R. Torres-Escobedo, R. Turner, E. Varela, X. Wang, Z. Wang, I. J. Watson, H. Wu, S. Yu, S. Yun-Cárcamo, H. Zhou, C. de León, HAWC Collaboration   +91 more
doaj   +1 more source

X-ray polarization of the Compton-thin Seyfert galaxy NGC 5506 with IXPE

Astronomy & Astrophysics
We report on the observation of the Compton-thin Seyfert galaxy NGC 5506 performed with the Imaging X-ray Polarimetry Explorer (IXPE). The observation, with a net observing time of 975 ks, was partly simultaneous with NuSTAR (52 ks) and XMM-Newton (37 ks)
Tagliacozzo Daniele, Lai Alessandro Leonardo, Gnarini Andrea, Matt Giorgio, Bianchi Stefano, Ursini Francesco, Marinucci Andrea, Tortosa Alessia, Chakraborty Sudip, Ferretti Federico, Gianolli Vittoria Elvezia, Kammoun Elias, Marin Frédéric, Marshall Herman, Middei Riccardo, Mikusincova Romana, Kim Dawoon   +16 more
doaj   +1 more source

X-Ray Emission Signatures of Galactic Feedback in the Hot Circumgalactic Medium: Predictions from Cosmological Hydrodynamical Simulations

The Astrophysical Journal
Little is currently known about the physical properties of the hot circumgalactic medium (CGM) surrounding massive galaxies. Next-generation X-ray observatories will enable detailed studies of the hot CGM in emission.
Emily M. Silich, John ZuHone, Elena Bellomi, Cameron Hummels, Benjamin Oppenheimer, Philip F. Hopkins, Cassandra Lochhaas, Sam B. Ponnada, Alexey Vikhlinin   +8 more
doaj   +1 more source

Double axis X-Ray rocking curves simulation [PDF]

, 1990
Double axis X-ray diffraction has been in use since 1920. Recently the layer structures of optoelectronic devices have been characterised to control the optical properties, for the purpose of optical communication.
Ansari, Abdul Wahab
core  

Fast X-Ray Variability from the Coronae of Supermassive Black Holes

The Astrophysical Journal Letters
We present the first systematic study of short-timescale X-ray variability in radio-quiet active galactic nuclei (AGN), utilizing archival Chandra observations of approximately 3000 broad-line AGN selected from the Sloan Digital Sky Survey and Dark ...
Xiurui Zhao, Luca Comisso, Stefano Marchesi, Marco Ajello, Elias Kammoun, Yue Shen, Qiaoya Wu   +6 more
doaj   +1 more source

5.8 X-ray Calorimeters [PDF]

, 2008
X-ray calorimeter instruments for astrophysics have seen rapid development since they were invented in 1984. The prime instrument on all currently planned X-ray spectroscopic observatories is based on calorimeter technology.
Porter, F. Scott
core  

Abstract Supplement HIV Glasgow 8–11 November 2026, Glasgow, UK/Virtual

Journal of the International AIDS Society, Volume 29, Issue S6, November 2026.
wiley   +1 more source

A search for TeV gamma ray emission from X-ray binary stars [PDF]

, 1993
This work is concerned with the detection of pulsed TeV gamma ray emission from a number of X-ray binary systems by the use of the atmospheric Cerenkov technique.
Bowden, Christopher Charles Geoffrey
core  

The cyclone hard X-ray observatory

, 2000
In response to the recent NASA-SMEX Announcement of Opportunity, our collaboration proposed Cyclone, the Cyclotron/Nuclear Explorer. Cyclone is a broadband pointed astrophysical observatory, combining the highest spectral resolutions (E/ΔE approximately 30-300) and angular resolutions (15 inches) achieved in the optimized hard X-ray range (10-200 keV).
Boggs, Steven E., Lin, Robert P., Dennis, Brian R., Madden, Norman W., von Ballmoos, Peter, Thomsen, Knud, Hurford, Gordon J., Hurley, Kevin C., Smith, David M., Jean, Pierre, Knoedlseder, Jurgen, Millan, Robyn M.   +11 more
openaire   +1 more source

Identifying the principal mechanism of star formation feedback. [PDF]

Sci Adv
Li C, Li R, Qiu K, Krco M, Li D, Wang H, Lyu X, Duan Y, Fang M, Chen X, Wang L, Feng H, Zhang S, Zhang M, Zhang S, Cao Y, Wang Y, Gong Y, Du F, Chen Z, Su Y, Ma Y, Xing Y, Zheng Y, Zhang T, Niu S, Li C, Liu J, Zhang Z, Guo Y.   +29 more
europepmc   +1 more source