Zobrazeno 1 - 10
of 76 770
pro vyhledávání: '"X-ray sources"'
Autor:
Mróz, Przemek, Król, Krzysztof, Szegedi, Hélène, Charles, Philip, Page, Kim L., Udalski, Andrzej, Buckley, David A. H., Dewangan, Gulab, Meintjes, Pieter, Szymański, Michał K., Soszyński, Igor, Pietrukowicz, Paweł, Kozłowski, Szymon, Poleski, Radosław, Skowron, Jan, Ulaczyk, Krzysztof, Gromadzki, Mariusz, Rybicki, Krzysztof, Iwanek, Patryk, Wrona, Marcin, Mróz, Mateusz J.
Some accreting binary systems containing a white dwarf (such as classical novae or persistent supersoft sources) are seen to emit low energy X-rays with temperatures of ~10^6 K and luminosities exceeding 10^35 erg/s. These X-rays are thought to origi
Externí odkaz:
http://arxiv.org/abs/2409.17338
Autor:
Kosiba, M., Massaro, F., Paggi, A., Peña-Herazo, H. A., Masetti, N., Chavushyan, V., Bottacini, E., Werner, N.
It is currently established that the sources contributing to the cosmic X-ray background (CXB) emission are mainly nearby active galactic nuclei (AGN), in particular those that are obscured. Thus, it is important to fully identify the hard X-ray sky
Externí odkaz:
http://arxiv.org/abs/2408.05303
Autor:
Miyaji, T., Bravo-Navarro, B. A., Tello, J. Díaz, Krumpe, M., Herrera-Endoqui, M., Ikeda, H., Takagi, T., Oi, N., Shogaki, A., Matsuura, S., Kim, H., Malkan, M. A., Hwang, H. S., Kim, T., Ishigaki, T., Hanami, H., Kim, S. J., Ohyama, Y., Goto, T., Matsuhara, H.
Publikováno v:
A&A 689, A83 (2024)
We present a catalog of optical and infrared identifications (ID) of X-ray sources in the AKARI North Ecliptic Pole (NEP) Deep field detected with Chandra covering $\sim 0.34\,{\rm deg^{2}}$ with 0.5-2 keV flux limits ranging $\sim 2 \mathrm{-} 20\ti
Externí odkaz:
http://arxiv.org/abs/2407.13864
Autor:
Saeedi, Sara, Sasaki, Manami, Knies, Jonathan, Robrade, Jan, Heindl, Theresa, Zainab, Aafia, Hämmerich, Steven, Reh, Martin, Wilms, Joern
Using the data of eROSITA (extended Roentgen Survey with an Imaging Telescope Array) on board Spektrum-Roentgen-Gamma (Spektr-RG, SRG) taken during the first eROSITA all-sky survey (eRASS1), we perform the first X-ray classification and population st
Externí odkaz:
http://arxiv.org/abs/2407.12583
Autor:
Sacchi, A., Imbrogno, M., Motta, S. E., Esposito, P., Israel, G. L., Vago, N. O. Pinciroli, De Luca, A., Marelli, M., Pintore, F., Castillo, G. A. Rodríguez, Salvaterra, R., Tiengo, A.
Publikováno v:
A&A 689, A217 (2024)
We report on the multi-year evolution of the population of X-ray sources in the nuclear region of NGC 3621 based on Chandra, XMM-Newton and Swift observations. Among these, two sources, X1 and X5, after their first detection in 2008, seem to have fad
Externí odkaz:
http://arxiv.org/abs/2407.00150
Astrophysical emission lines arising from particle decays can offer unique insights into the nature of dark matter (DM). Using dedicated simulations with background and foreground modeling, we comprehensively demonstrate that the recently launched XR
Externí odkaz:
http://arxiv.org/abs/2407.18189
Autor:
Zuo, Xiaoxiong, Tao, Yihan, Liu, Yuan, Xu, Yunfei, Zhang, Wenda, Pan, Haiwu, Sun, Hui, Zhang, Zhen, Cui, Chenzhou, Yuan, Weimin
X-ray observations play a crucial role in time-domain astronomy. The Einstein Probe (EP), a recently launched X-ray astronomical satellite, emerges as a forefront player in the field of time-domain astronomy and high-energy astrophysics. With a focus
Externí odkaz:
http://arxiv.org/abs/2407.11462
Nebular spectral lines provide insight into the properties of the interstellar medium and the ionizing radiation within galaxies. The presence of high-energy ionization lines, such as He II, indicates the existence of hard ionizing photons, because t
Externí odkaz:
http://arxiv.org/abs/2405.08121
Autor:
Shashank, Swarnim, Liu, Honghui, Abdikamalov, Askar B., Jiang, Jiachen, Bambi, Cosimo, Baker, Fergus, Young, Andrew
We present a relativistic disk reflection model based on the geometry calculated using analytical formulae for super-Eddington accretion flows. This model features a slim disk geometry where the inner disk thickness is proportional to radius, becomin
Externí odkaz:
http://arxiv.org/abs/2407.12890