Zobrazeno 1 - 10
of 555
pro vyhledávání: '"X Ray Background"'
Autor:
F. Civano, X. Zhao, P. G. Boorman, S. Marchesi, T. Ananna, S. Creech, C.-T. Chen, R. C. Hickox, D. Stern, K. Madsen, J. A. García, R. Silver, J. Aird, D. M. Alexander, M. Baloković, W. N. Brandt, J. Buchner, P. Gandhi, E. Kammoun, S. LaMassa, G. Lanzuisi, A. Merloni, A. Moretti, K. Nandra, E. Nardini, A. Pizzetti, S. Puccetti, R. W. Pfeifle, C. Ricci, D. Spiga, N. Torres-Albà
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 11 (2024)
Since the discovery of the cosmic X-ray background (CXB), astronomers have strived to understand the accreting supermassive black holes (SMBHs) contributing to its peak in the 10–40 keV band. Existing soft X-ray telescopes could study this populati
Externí odkaz:
https://doaj.org/article/94dd8252c17945e09edeaabcce5a31d1
Publikováno v:
The Astrophysical Journal Letters, Vol 966, Iss 2, p L32 (2024)
Using deep archival observations from the Chandra X-ray Observatory, we present an analysis of linear X-ray-emitting features located within the southern portion of the Galactic center chimney and oriented orthogonal to the Galactic plane, centered a
Externí odkaz:
https://doaj.org/article/b678ffd0570c4b49b5942af6376dae3a
Autor:
Drew M. Miles, Randall L. McEntaffer, James H. Tutt, Logan Baker, Ross McCurdy, Bailey Myers, Bridget O’Meara, Joseph Weston
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 2, p 171 (2024)
The Rockets for Extended-source X-ray Spectroscopy (tREXS) are a series of suborbital rocket payloads designed to collect spectral emission from extended astronomical sources of soft X-rays. The tREXS spectrograph uses mechanical beam-shaping modules
Externí odkaz:
https://doaj.org/article/a2c4029a02354937a2de8d332c700ae0
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 271, Iss 2, p 62 (2024)
The XMM-Newton Line Emission Analysis Program (X-LEAP) is designed to study diffuse X-ray emissions from the Milky Way (MW) hot gas, as well as emissions from the foreground solar wind charge exchange (SWCX). This paper presents an all-sky survey of
Externí odkaz:
https://doaj.org/article/f0b047ec78b949cb9c2284be6f03a664
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 2, p 100 (2024)
This paper presents the multiscale temperature structures in the Milky Way (MW) hot gas, as part of the XMM-Newton Line Emission Analysis Program, surveying the O vii , O viii , and Fe-L band emission features in the XMM-Newton archive. In particular
Externí odkaz:
https://doaj.org/article/92522c8430d64c7db5e57183b449a6bb
Autor:
Kazuki Ampuku, Ikuyuki Mitsuishi, Koki Sakuta, Philip Kaaret, Daniel M. LaRocca, Lorella Angelini
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 2, p 153 (2024)
We analyzed data from HaloSat observations for five fields in the Galactic disk located far away from the Galactic center (135° < l < 254°) to understand the nature of soft X-ray energy emission in the Galactic disk. The fields have 14° diameter a
Externí odkaz:
https://doaj.org/article/cbf14ef4253044a8bdaad4d2150eacf7
Autor:
Katsuji Koyama, Masayoshi Nobukawa
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 2, p 205 (2024)
Galactic diffuse X-ray emission (GDXE) can be spatially segmented into Galactic center X-ray emission (GCXE), Galactic ridge X-ray emission (GRXE), and Galactic bulge X-ray emission (GBXE). The X-ray spectra of GDXE are expressed by the assembly of c
Externí odkaz:
https://doaj.org/article/c767925773b243ff90972cfc53f37fe9
Autor:
Hamsa Padmanabhan, Abraham Loeb
Publikováno v:
The Astrophysical Journal Letters, Vol 958, Iss 1, p L7 (2023)
We predict the X-ray background (XRB) expected from the population of quasars detected by the James Webb Space Telescope spectroscopic surveys over the redshift range z ∼ 4–7. We find that the measured UV emissivities imply a ∼10 times higher u
Externí odkaz:
https://doaj.org/article/29eb6248f19f4c05a75b038d0ce14007
Autor:
Zu-Ke Feng, Hong-Bang Liu, Fei Xie, Huan-Bo Feng, Qian-Nan Mai, Jiang-Chuan Tuo, Qian Zhong, Jian-Chao Sun, Jiang He, Yuan-Hao Wang, Qian Liu, Di-Fan Yi, Rui-Ting Ma, Bin-Long Wang, Zhen-Yu Tang, Shuang-Nan Zhang, En-Wei Liang
Publikováno v:
The Astrophysical Journal, Vol 960, Iss 1, p 87 (2023)
The Low-Energy X-ray Polarization Detector (LPD) is one of the payloads in the POLAR-2 experiment, designed as an external payload for the China Space Station deployment in early 2026. LPD is specifically designed to observe the polarization of gamma
Externí odkaz:
https://doaj.org/article/778a573b350f4b63a8160afa798dd729
Publikováno v:
The Astrophysical Journal, Vol 955, Iss 2, p 139 (2023)
The study of solar wind charge exchange (SWCX) emission is vital to both the X-ray astrophysics and heliophysics communities. SWCX emission contaminates all astrophysical observations in X-rays regardless of the direction. Ignoring this contribution
Externí odkaz:
https://doaj.org/article/7476afb33d5f4a9ab26b0e8df8a78141