L
Long Ji
Researcher at University of Tübingen
Publications - 126
Citations - 2481
Long Ji is an academic researcher from University of Tübingen. The author has contributed to research in topics: Neutron star & Pulsar. The author has an hindex of 21, co-authored 93 publications receiving 1598 citations. Previous affiliations of Long Ji include Sun Yat-sen University & Chinese Academy of Sciences.
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Journal ArticleDOI
The eROSITA X-ray telescope on SRG
Peter Predehl,Robert Andritschke,V. Arefiev,V. Babyshkin,O. Batanov,Werner Becker,Hans Böhringer,A. V. Bogomolov,Th. Boller,Katharina Borm,Katharina Borm,W. Bornemann,Heinrich Bräuninger,Marcus Brüggen,Hermann Brunner,Marcella Brusa,Marcella Brusa,Esra Bulbul,M. Buntov,Vadim Burwitz,Wolfgang Burkert,N. Clerc,E. Churazov,D. Coutinho,Thomas Dauser,Konrad Dennerl,Victor Doroshenko,Josef Eder,Valentin Emberger,Tanja Eraerds,Alexis Finoguenov,Michael Freyberg,Peter Friedrich,S. Friedrich,Maria Fürmetz,Antonis Georgakakis,Marat Gilfanov,S. Granato,Christoph Grossberger,A. Gueguen,P. Gureev,Frank Haberl,O. Hälker,Gisela Hartner,Guenther Hasinger,H. Huber,Long Ji,Andreas von Kienlin,W. Kink,F. Korotkov,Ingo Kreykenbohm,Georg Lamer,I. Lomakin,I. Lapshov,Tie Liu,Chandreyee Maitra,Norbert Meidinger,B. Menz,Andrea Merloni,T. Mernik,Benjamin Mican,Joseph J. Mohr,Sebastian Müller,Kirpal Nandra,V. Nazarov,Florian Pacaud,M. N. Pavlinsky,Emanuele Perinati,Elmar Pfeffermann,Daniel Pietschner,Miriam E. Ramos-Ceja,Arne Rau,Jonas Reiffers,Thomas H. Reiprich,Jan Robrade,Mara Salvato,Jeremy S. Sanders,Andrea Santangelo,Manami Sasaki,H. Scheuerle,Christian Schmid,Jürgen H. M. M. Schmitt,Axel Schwope,A. Shirshakov,Matthias Steinmetz,Ian M. Stewart,Lothar Strüder,Rashid Sunyaev,C. Tenzer,Lars Tiedemann,Joachim Trümper,V. Voron,P. Weber,Joern Wilms,Valeri Yaroshenko +94 more
Abstract: eROSITA (extended ROentgen Survey with an Imaging Telescope Array) is the primary instrument on the Spectrum-Roentgen-Gamma (SRG) mission, which was successfully launched on July 13, 2019, from the Baikonour cosmodrome. After the commissioning of the instrument and a subsequent calibration and performance verification phase, eROSITA started a survey of the entire sky on December 13, 2019. By the end of 2023, eight complete scans of the celestial sphere will have been performed, each lasting six months. At the end of this program, the eROSITA all-sky survey in the soft X-ray band (0.2–2.3 keV) will be about 25 times more sensitive than the ROSAT All-Sky Survey, while in the hard band (2.3–8 keV) it will provide the first ever true imaging survey of the sky. The eROSITA design driving science is the detection of large samples of galaxy clusters up to redshifts z > 1 in order to study the large-scale structure of the universe and test cosmological models including Dark Energy. In addition, eROSITA is expected to yield a sample of a few million AGNs, including obscured objects, revolutionizing our view of the evolution of supermassive black holes. The survey will also provide new insights into a wide range of astrophysical phenomena, including X-ray binaries, active stars, and diffuse emission within the Galaxy. Results from early observations, some of which are presented here, confirm that the performance of the instrument is able to fulfil its scientific promise. With this paper, we aim to give a concise description of the instrument, its performance as measured on ground, its operation in space, and also the first results from in-orbit measurements.
Journal ArticleDOI
The enhanced X-ray Timing and Polarimetry mission—eXTP
Shuang-Nan Zhang,Andrea Santangelo,Andrea Santangelo,Marco Feroci,Yupeng Xu,Fangjun Lu,Yong Chen,Hua Feng,Shu Zhang,Søren Brandt,Margarita Hernanz,Luca Baldini,Enrico Bozzo,Riccardo Campana,Alessandra De Rosa,Yongwei Dong,Y. Evangelista,Vladimir Karas,Norbert Meidinger,A. Meuris,Kirpal Nandra,Teng Pan,Giovanni Pareschi,Piotr Orleanski,Qiushi Huang,Stéphane Schanne,G. Sironi,Daniele Spiga,Jiri Svoboda,Gianpiero Tagliaferri,C. Tenzer,Andrea Vacchi,Andrea Vacchi,Silvia Zane,D. Walton,Zhanshan Wang,Berend Winter,Xin Wu,Jean J. M. in't Zand,M. Ahangarianabhari,G. Ambrosi,Filippo Ambrosino,Marco Barbera,Stefano Basso,Jörg Bayer,Ronaldo Bellazzini,Pierluigi Bellutti,Bruna Bertucci,Giuseppe Bertuccio,Giacomo Borghi,X. L. Cao,Franck Cadoux,F. Ceraudo,Tian-Xiang Chen,Yu-Peng Chen,Jerome Chevenez,Marta Civitani,Wei Cui,Wei-Wei Cui,Thomas Dauser,Ettore Del Monte,Sergio Di Cosimo,Sebastian Diebold,Victor Doroshenko,Michal Dovciak,Yuan-Yuan Du,Lorenzo Ducci,Qingmei Fan,Yannick Favre,F. Fuschino,J. L. Galvez,M. Gao,Ming-Yu Ge,O. Gevin,Marco Grassi,QuanYing Gu,Yu-Dong Gu,Da-Wei Han,Bin Hong,Wei Hu,Long Ji,Shu-Mei Jia,W. C. Jiang,T. Kennedy,I. Kreykenbohm,Irfan Kuvvetli,Claudio Labanti,Luca Latronico,Gang Li,Mao-Shun Li,Xian Li,Wei Li,Zheng-Wei Li,Olivier Limousin,H. T. Liu,Xiao-Jing Liu,Bo Lu,T. Luo,D. Macera,Piero Malcovati,Adrian Martindale,M. Michalska,Bin Meng,Massimo Minuti,Alfredo Morbidini,Fabio Muleri,Stéphane Paltani,Emanuele Perinati,Antonino Picciotto,Claudio Piemonte,Jin-Lu Qu,A. Rachevski,Irina Rashevskaya,Jerome Rodriguez,Thomas Schanz,Zhengxiang Shen,LiZhi Sheng,JiangBo Song,Li-Ming Song,Carmelo Sgrò,Liang Sun,Ying Tan,Phil Uttley,Bo Wang,Dianlong Wang,G. F. Wang,Juan Wang,LangPing Wang,Yu-Sa Wang,Anna L. Watts,XiangYang Wen,Jörn Wilms,Shaolin Xiong,J. W. Yang,Sheng Yang,Yanji Yang,Nian Yu,Wenda Zhang,G. Zampa,N. Zampa,Andrzej A. Zdziarski,Aimei Zhang,C. L. Zhang,Fan Zhang,Long Zhang,Tong Zhang,Yi Zhang,Xiaoli Zhang,Zi-Liang Zhang,Baosheng Zhao,ShiJie Zheng,Yupeng Zhou,Nicola Zorzi,J. Frans Zwart +153 more
TL;DR: The enhanced X-ray Timing and Polarimetry mission—eXTP is a space science mission designed to study fundamental physics under extreme conditions of density, gravity and magnetism and will be a very powerful observatory for astrophysics that will provide observations of unprecedented quality on a variety of galactic and extragalactic objects.
Proceedings ArticleDOI
eXTP: Enhanced X-ray Timing and Polarization mission
Shuang-Nan Zhang,Marco Feroci,Andrea Santangelo,Yongwei Dong,Hua Feng,Fangjun Lu,Kirpal Nandra,Zhenhua Wang,Shu Zhang,Enrico Bozzo,Søren Brandt,A. de Rosa,L. J. Gou,M. Hernanz,M. van der Klis,X. D. Li,Y. Liu,Piotr Orleanski,G. Pareschi,M. Pohl,Juri Poutanen,Jin-Lu Qu,Stéphane Schanne,Luigi Stella,Phil Uttley,Anna L. Watts,Rong Xu,W. F. Yu,J. J. M. in 't Zand,Silvia Zane,Laura Alvarez,Lorenzo Amati,Luca Baldini,Cosimo Bambi,Stefano Basso,Somak Bhattacharyya,Ronaldo Bellazzini,T. M. Belloni,Pierluigi Bellutti,Stefano Bianchi,Alessandro Brez,Michal Bursa,Vadim Burwitz,Carl Budtz-Jørgensen,Ilaria Caiazzo,Riccardo Campana,X. L. Cao,Piergiorgio Casella,C. Y. Chen,L. Chen,Tian-Xiang Chen,Yi Chen,Yu-Peng Chen,Marta Civitani,F. Coti Zelati,F. Coti Zelati,Wei Cui,Wei Cui,Wei-Wei Cui,Z. G. Dai,E. Del Monte,D. de Martino,S. Di Cosimo,Sebastian Diebold,Michal Dovciak,I. Donnarumma,Victor Doroshenko,Paolo Esposito,Y. Evangelista,Yannick Favre,Peter Friedrich,F. Fuschino,J. L. Galvez,Zhanhai Gao,Ming-Yu Ge,O. Gevin,D. Goetz,Da-Wei Han,Jeremy S. Heyl,J. Horak,Wei Hu,F. Huang,Q. S. Huang,René Hudec,Daniela Huppenkothen,G. L. Israel,Adam Ingram,Vladimír Karas,D. Karelin,P. A. Jenke,Long Ji,S. Korpela,D. Kunneriath,Claudio Labanti,Gang Li,Xin Li,Z. S. Li,E. W. Liang,Olivier Limousin,L. Lin,Z. X. Ling,H. B. Liu,Hongwei Liu,Z. Liu,Bo Lu,Niels Lund,Dong Lai,B. Luo,Tao Luo,Bin Ma,S. Mahmoodifar,Martino Marisaldi,Adrian Martindale,Norbert Meidinger,Y. P. Men,M. Michalska,Roberto Mignani,Roberto Mignani,Massimo Minuti,Sara Motta,Fabio Muleri,Joseph Neilsen,Mauro Orlandini,A. T. Pan,Alessandro Patruno,Emanuele Perinati,A. Picciotto,Claudio Piemonte,Michele Pinchera,A. Rachevski,M. Rapisarda,Nanda Rea,E. Rossi,Alda Rubini,Gloria Sala,X. W. Shu,Carmelo Sgrò,Zhengxiang Shen,Paolo Soffitta,Li-Ming Song,Gloria Spandre,G. Stratta,Tod E. Strohmayer,L. Sun,J. Svoboda,G. Tagliaferri,C. Tenzer,T. Hong,Roberto Taverna,Gabriel Török,R. Turolla,S. Vacchi,Juan Wang,Dom Walton,Kun Wang,Jianxin Wang,R. J. Wang,Y. F. Wang,Shan-Shan Weng,Jörn Wilms,Berend Winter,Xin Wu,X. F. Wu,Shaolin Xiong,Yupeng Xu,Yue Xue,Yan Zhaojun,Sheng Yang,X. Yang,Y. J. Yang,Feng Yuan,W. M. Yuan,Y. F. Yuan,G. Zampa,N. Zampa,A. A. Zdziarski,C. L. Zhang,C. L. Zhang,L. Zhang,Xiang Zhang,Zi-Liang Zhang,W. D. Zhang,ShiJie Zheng,Ping Zhou,X. L. Zhou +184 more
TL;DR: eXTP as discussed by the authors is a science mission designed to study the state of matter under extreme conditions of density, gravity and magnetism, which carries a unique and unprecedented suite of state-of-the-art scientific instruments enabling for the first time ever the simultaneous spectral-timing-polarimetry studies of cosmic sources in the energy range from 0.5-30 keV.
Journal ArticleDOI
The eROSITA X-ray telescope on SRG.
Peter Predehl,Robert Andritschke,V. Arefiev,V. Babyshkin,O. Batanov,Werner Becker,Hans Böhringer,A. V. Bogomolov,Th. Boller,Katharina Borm,Katharina Borm,W. Bornemann,Heinrich Bräuninger,Marcus Brüggen,Hermann Brunner,Marcella Brusa,Marcella Brusa,Esra Bulbul,M. Buntov,Vadim Burwitz,Wolfgang Burkert,N. Clerc,E. Churazov,D. Coutinho,Thomas Dauser,Konrad Dennerl,Victor Doroshenko,Josef Eder,Valentin Emberger,Tanja Eraerds,Alexis Finoguenov,Michael Freyberg,Peter Friedrich,S. Friedrich,Maria Fürmetz,Antonis Georgakakis,Marat Gilfanov,S. Granato,Christoph Grossberger,A. Gueguen,P. Gureev,Frank Haberl,O. Hälker,Gisela Hartner,Guenther Hasinger,H. Huber,Long Ji,Andreas von Kienlin,W. Kink,F. Korotkov,Ingo Kreykenbohm,Georg Lamer,I. Lomakin,I. Lapshov,Tie Liu,Chandreyee Maitra,Norbert Meidinger,B. Menz,Andrea Merloni,T. Mernik,Benjamin Mican,Joseph J. Mohr,Sebastian Müller,Kirpal Nandra,V. Nazarov,Florian Pacaud,M. N. Pavlinsky,Emanuele Perinati,Elmar Pfeffermann,Daniel Pietschner,Miriam E. Ramos-Ceja,Arne Rau,Jonas Reiffers,Thomas H. Reiprich,Jan Robrade,Mara Salvato,Jeremy S. Sanders,Andrea Santangelo,Manami Sasaki,H. Scheuerle,Christian Schmid,Jürgen H. M. M. Schmitt,Axel Schwope,A. Shirshakov,Matthias Steinmetz,Ian M. Stewart,Lothar Strüder,Rashid Sunyaev,C. Tenzer,Lars Tiedemann,Joachim Trümper,V. Voron,P. Weber,Joern Wilms,Valeri Yaroshenko +94 more
TL;DR: eROSITA (extended ROentgen Survey with an Imaging Telescope Array) is the primary instrument on the Spectrum-Roentgen-Gamma (SRG) mission, which was successfully launched on July 13, 2019, from the Baikonour cosmodrome.
Proceedings ArticleDOI
eXTP -- enhanced X-ray Timing and Polarimetry Mission
Shuang-Nan Zhang,Marco Feroci,Andrea Santangelo,Yongwei Dong,Hua Feng,Fangjun Lu,K. Nandra,Zhenhua Wang,Shu Zhang,Enrico Bozzo,Søren Brandt,A. de Rosa,L. J. Gou,M. Hernanz,M. van der Klis,X. D. Li,Y. Liu,Piotr Orleanski,G. Pareschi,M. Pohl,Juri Poutanen,Jin-Lu Qu,Stéphane Schanne,Luigi Stella,P. Uttley,Anna L. Watts,Rong Xu,W. F. Yu,J. J. M. in 't Zand,Silvia Zane,Laura Alvarez,Lorenzo Amati,Luca Baldini,Cosimo Bambi,S. Basso,Somak Bhattacharyya,R. Bellazzini,T. M. Belloni,P. Bellutti,Stefano Bianchi,A. Brez,Michal Bursa,Vadim Burwitz,Carl Budtz-Jørgensen,Ilaria Caiazzo,Riccardo Campana,X. L. Cao,Piergiorgio Casella,C. Y. Chen,L. Chen,Tian-Xiang Chen,Yi Chen,Yu-Peng Chen,Marta Civitani,F. Coti Zelati,Wei Cui,Wei-Wei Cui,Z. G. Dai,E. Del Monte,D. de Martino,S. Di Cosimo,Sebastian Diebold,M. Dovciak,I. Donnarumma,Victor Doroshenko,Paolo Esposito,Y. Evangelista,Yannick Favre,Peter Friedrich,F. Fuschino,J. L. Galvez,Zhanhai Gao,Ming-Yu Ge,O. Gevin,D. Goetz,Da-Wei Han,Jeremy S. Heyl,Jiří Horák,Wei Hu,F. Huang,Q. S. Huang,René Hudec,Daniela Huppenkothen,G. L. Israel,Adam Ingram,Vladimír Karas,D. Karelin,P. A. Jenke,Long Ji,T. Kennedy,S. Korpela,D. Kunneriath,Claudio Labanti,Gang Li,Xin Li,Z. S. Li,E. W. Liang,Olivier Limousin,L. Lin +98 more
TL;DR: eXTP as discussed by the authors is a science mission designed to study the state of matter under extreme conditions of density, gravity and magnetism, which carries a unique and unprecedented suite of state-of-the-art scientific instruments enabling for the first time ever the simultaneous spectral-timing-polarimetry studies of cosmic sources in the energy range from 0.5-30 keV.