Results 21 to 30 of about 9,276 (206)

The ART-XC telescope on board the SRG observatory [PDF]

Astronomy & Astrophysics, 2021
Astronomical Roentgen Telescope – X-ray Concentrator (ART-XC) is the hard X-ray instrument with grazing incidence imaging optics on board the Spektr-Roentgen-Gamma (SRG) observatory.
M.Pavlinsky, A.Tkachenko, V. Levin, N. Alexandrovich, V. Arefiev, V. Babyshkin, O. Batanov, Yu. Bodnar, A. Bogomolov, A. Bubnov, M. Buntov, R. Burenin, I. Chelovekov, C-T J Chen, T. Drozdova, S. Ehlert, E. Filippova, S. Frolov, D. Gamkov, S. Garanin, M. Garin, A. Glushenko, A. Gorelov, S. Grebenev, S. Grigorovich, P. Gureev, E. Gurova, R. Ilkaev, I. Katasonov, A. Krivchenko, R. Krivonos, F. Korotkov, M. Kudelin, M. Kuznetsova, V. Lazarchuk, I. Lomakin, I. Lapshov, V. Lipilin, A. Lutovinov, I. Mereminskiy, S. Molkov, V. Nazarov, V. Oleinikov, E. Pikalov, B. Ramsey, I. Roiz, A. Rotin, E. Sankin, A. Ryadov, S. Sazonov, D. Sedov, A. Semena, N. Semena, D. Serbinov, A. Shirshakov, A. Shtykovsky, A. Shvetsov, R. Sunyaev, D. Swartz, V. Tambov, V. Voron, A. Institute, Russia., Lavochkin Association, Russian Federal Nuclear Center - All-Russian Scientific Re Physics, Rfnc-Vniief, Universities Space Research Association, Usa, NASAMarshall Space Flight Center, M. F. Astrophysik, H Germany, State Space Corporation Roscosmos   +71 more
semanticscholar   +1 more source

Abundance and temperature of the outer hot circumgalactic medium. The SRG/eROSITA view of the soft X-ray background in the eFEDS field [PDF]

Astronomy & Astrophysics, 2022
Despite their vital importance to understand galaxy evolution and our own Galactic ecosystem, our knowledge of the physical properties of the hot phase of the Milky Way is still inadequate.
G. Ponti, X. Zheng, N. Locatelli, S. Bianchi, Y. Zhang, K. Anastasopoulou, J. Comparat, K. Dennerl, M. Freyberg, F. Haberl, A. Merloni, T. Reiprich, M. Salvato, Jeremy S. Sanders, M. Sasaki, A. Strong, M. Yeung   +16 more
semanticscholar   +1 more source

SRG/ART-XC all-sky X-ray survey: catalog of sources detected during the first year [PDF]

Astronomy & Astrophysics, 2021
We present a first catalog of sources detected by the Mikhail Pavlinsky ART-XC telescope on board the SRG observatory in the 4-12 keV energy band during its ongoing all-sky survey.
M. Pavlinsky, S. Sazonov, R. Burenin, E. Filippova, R. Krivonos, V. Arefiev, M. Buntov, C-T J Chen, S. Ehlert, I. Lapshov, V. Levin, A. Lutovinov, A. Lyapin, I. Mereminskiy, S. Molkov, B. Ramsey, A. Semena, N. Semena, A. Shtykovsky, R. Sunyaev, A. Tkachenko, D. Swartz, A. Vikhlinin   +22 more
semanticscholar   +1 more source

Measurements and analysis of non-methane VOC (NMVOC) emissions from major domestic aerosol sprays at “source”

Environment International, 2021
Non-Methane Volatile Organic Compounds (NMVOCs) from domestic aerosol sprays are emerging pollutants and have substantial negative effects on human health and the environment.
Amir Nourian, Muhammad Kabir Abba, Ghasem G. Nasr   +2 more
doaj   +1 more source

Elephant herding algorithm-based optimal PI controller for LVRT enhancement of wind energy conversion systems

Ain Shams Engineering Journal, 2021
This article introduces an optimal PI controller optimized by elephant herding algorithm (EHA) to control the grid-tied four-phase 8/6 switched reluctance generator (SRG).
Mohamed F. El-Naggar, Mohamed I. Mosaad, Hany M. Hasanien, Tarek A. AbdulFattah, Ahmed F. Bendary   +4 more
doaj   +1 more source

Improvement of Steady State Performance of Voltage Control in Switched Reluctance Generator: Experimental Validation

Machines, 2022
This paper presents a voltage control approach to a Switched Reluctance Generator (SRG) using a Proportional Integral (PI) controller. The principle of operation is described and the considerations in the design of controller are discussed.
Zeineb Touati, Manuel Pereira, Rui Esteves Araújo, Adel Khedher   +3 more
doaj   +1 more source

Comparative Study of Discrete PI and PR Controller Implemented in SRG for Wind Energy Application: Theory and Experimentation

Electronics, 2022
The Switched Reluctance Generator (SRG) has been widely studied for Wind Energy Conversion Systems (WECS). However, a major drawback of the SRG system adopting the conventional control is the slow response of the DC link voltage controller. In this paper,
Z. Touati, Manuel Pereira, R. Araújo, A. Khedher   +3 more
semanticscholar   +1 more source

Comparative analysis of cellular expression pattern of schizophrenia risk genes in human versus mouse cortex

Cell & Bioscience, 2019
Background Schizophrenia is a common psychiatric disease with high hereditary. The identification of schizophrenia risk genes (SRG) has shed light on its pathophysiological mechanisms.
Hai-Long Zhang, Jia-Wen Long, Wei Han, Jiuzhou Wang, Weichen Song, Guan Ning Lin, Dong-Min Yin   +6 more
doaj   +1 more source

The more the merrier: SRG /eROSITA discovers two further galaxies showing X-ray quasi-periodic eruptions [PDF]

Astronomy & Astrophysics
X-ray quasi-periodic eruptions (QPEs) are a novel addition to the group of extragalactic transients. With only a select number of known sources, and many more models published trying to explain them, we are so far limited in our understanding by small ...
R. Arcodia, Z. Liu, A. Merloni, A. Malyali, A. Rau, J. Chakraborty, A. Goodwin, D. Buckley, J. Brink, M. Gromadzki, Z. Arzoumanian, J. Buchner, E. Kara, K. Nandra, G. Ponti, M. Salvato, G. Anderson, P. Baldini, I. Grotova, M. Krumpe, C. Maitra, J. Miller-Jones, M. Ramos-Ceja   +22 more
semanticscholar   +1 more source

A giant X-ray dust scattering ring discovered with SRG/eROSITA around the black hole transient MAXI J1348–630

Astronomy & Astrophysics, 2021
We report the discovery of a giant dust scattering ring around the Black Hole transient MAXI J1348−630 with SRG/eROSITA during its first X-ray all-sky survey.
G. Lamer, A. Schwope, P. Predehl, I. Traulsen, J. Wilms, M. Freyberg   +5 more
semanticscholar   +1 more source