Descope of the ALIA mission

10th International LISA Symposium

Gong, Xuefei^1 ; Lau, Yun-Kau^1,2,3,4 ; Xu, Shengnian^1 ; Amaro-Seoane, Pau^5 ; Bai, Shan^6 ; Bian, Xing^1,7 ; Cao, Zhoujian^1,3,4 ; Chen, Gerui^8 ; Chen, Xian^5 ; Ding, Yanwei^9 ; Dong, Peng^1 ; Gao, Wei^1,7 ; Heinzel, Gerhard^10 ; Li, Ming^9 ; Li, Shuo^11 ; Liu, Fukun^12,13 ; Luo, Ziren^14 ; Shao, Mingxue^2 ; Spurzem, Rainer^11,13,15 ; Sun, Baosan^16,20 ; Tang, Wenlin^1,7 ; Wang, Yan^10 ; Xu, Peng^2,17 ; Yu, Pin^18 ; Yuan, Yefei^19 ; Zhang, Xiaomin^8 ; Zhou, Zebing^16

Institute of Applied Mathematics, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, No.55 Zhongguancun Donglu, Beijing

100190, China^1

Morningside Center of Mathematics, Chinese Academy of Sciences, No.55 Zhongguancun Donglu, Beijing

100190, China^2

State Key Laboratory of Scientific and Engineering Computing, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, No.55 Zhongguancun Donglu, Beijing

100190, China^3

State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, No.55 Zhongguancun Donglu, Beijing

100190, China^4

Max-Planck-Institut für Gravitationsphysik (Albert Einstein Institut), Am Mfühlenberg 1, Potsdam

D-14476, Germany^5

Theoretisch-Physikalisches Institut, Friedrich-Schiller-Universität Jena, Frobelstieg 1, Jena

D-07743, Germany^6

University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing

100049, China^7

College of Applied Sciences, Beijing University of Technology, 100 Pingleyuan, Beijing

100124, China^8

Dongfanghong Small Satellite Company, F12 Shenzhou Building, No.31 Zhongguancun Nandajie, Beijing

100081, China

(10) Max-Planck-Institut für Gravitationsphysik (Albert Einstein Institut), Callinstraße 38, Hannover

D-30167, Germany

(11) National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Beijing

100012, China

(12) Department of Astronomy, School of Physics, Peking University, No.5 Yiheyuan Road, Beijing

100871, China

(13) Kavli Institute for Astronomy and Astrophysics, Peking University, 5 Yiheyuan Road, Beijing

100871, China

(14) Institute of Mechanics, Chinese Academy of Sciences, 15 Beisihuanxi Road, Beijing

100190, China

(15) Astronomisches Rechen-Institut, Zentrum für Astronomie, Universität Heidelberg, Mönchhofstrasse 12-14, Heidelberg

69120, Germany

(16) School of Physics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan

430074, China

(17) Institute of Theoretical Physics, Chinese Academy of Sciences, No.55 Zhongguancun Donglu, Beijing

100190, China

(18) Mathematical Science Center, Tsinghua University, Beijing

100084, China

(19) Center for Astrophysics, Department of Astronomy, University of Science and Technology of China, 96 Jinzhai Road, Hefei

230026, China

(20) Center for Gravitational Experiments, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan

430074, China^9

关键词: Chinese Academy of Sciences;    Co-evolution;    Early universe;    Feasibility studies;    High-redshift;    Intermediate mass black holes;    Mission concepts;    Scientific merits;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/610/1/012011/pdf
DOI  :  10.1088/1742-6596/610/1/012011

来源: IOP

【 摘 要 】

The present work reports on a feasibility study commissioned by the Chinese Academy of Sciences of China to explore various possible mission options to detect gravitational waves in space alternative to that of the eLISA/LISA mission concept. Based on the relative merits assigned to science and technological viability, a few representative mission options descoped from the ALIA mission are considered. A semi-analytic Monte Carlo simulation is carried out to understand the cosmic black hole merger histories and the possible scientific merits of the mission options in probing the light seed black holes and their coevolution with galaxies in early Universe. The study indicates that, by choosing the armlength of the interferometer to be three million kilometers and shifting the sensitivity floor to around one-hundredth Hz, together with a very moderate improvement on the position noise budget, there are certain mission options capable of exploring light seed, intermediate mass black hole binaries at high redshift that are not readily accessible to eLISA/LISA, and yet the technological requirements seem to within reach in the next few decades for China.