BIMSA > Alejandro Torres Orjuela
Assistant Professor Alejandro Torres Orjuela

Group: General Relativity and Partial Differential Equations

Office: A12-203

Email: atorreso@bimsa.cn

Research Field: General Relativity, Gravitational Waves

Webpage: https://aletorreso.wixsite.com/atogw

Biography

Alejandro Torres Orjuela obtained his Physics Bachelor's degree from the Free University of Berlin (Germany) and his Physics Master's degree as well as his Bachelor's and Master's degree in Mathematics from the Technical University of Berlin (Germany). Later, he moved to China to do his Ph.D. in Astrophysics at Peking University where he worked with Prof. Xian Chen and Prof. Pau Amaro Seoane from 2017 to 2021. After his Ph.D., Alejandro moved to the TianQin Center at Sun Yat-Sen University in Zhuhai (China) where he worked for two years as a PostDoc in the Theoretical Study group led by Prof. Jianwei Mei. In 2023 and 2024 Alejandro took a position as a Post-Doctoral Fellow at the University of Hong Kong where he was part of Prof. Lixin Jane Dai's group. In November 2024 Alejandro joined BIMSA as an Assistant Professor in the "Mathematical Physics and General Relativity" group. Alejandro works on different aspects of gravitational wave astronomy with a particular focus on the effect of the environment on gravitational wave detection with two major goals: understanding how environmental effects impact - and potential bias - detection and how these effects can be used to study the environment of the source. His research further includes gravitational wave sources with electromagnetic counterparts and their use as standard sirens to measure the expansion of the universe. Alejandro's studies involve different kinds of gravitational wave detectors across the spectrum with a particular focus on space-based detectors TianQin and LISA in the mHz band, atom interferometry detectors in the dHz band, and kHz detectors LIGO-Virgo-KAGRA.

Research Interest

  • Gravitational waves
  • Relativistic astrophysics
  • Multi-messenger astronomy

Education Experience

  • 2017 - 2021      Peking University      Astrophysics      Ph.D      (Supervisor: Xian Chen & Pau Amaro Seoane)
  • 2015 - 2016      Technical University of Berlin      Mathematics      M.Sc.      (Supervisor: Matthias Staudacher & Johannes Broedel)
  • 2011 - 2015      Technical University of Berlin      Mathematcis      B.Sc.      (Supervisor: Ulrich Pinkall)
  • 2012 - 2015      Technical University of Berlin      Physics      M.Sc.      (Supervisor: Horst-Heino von Borzeszkowski)
  • 2009 - 2012      Free University of Berlin      Physics      B.Sc.      (Supervisor: Dieter Breitschwerdt & Stefan Harfst)

Work Experience

  • 2023 - 2024      The University of Hong Kong      Post-doctoral Fellow
  • 2021 - 2023      TianQin Center for Gravitational Physics      Post-doctoral Researcher

Publication

  • [1] Alejandro Torres-Orjuela, Veronica Vazquez-Aceves, Tian-Xiao Wang, Detection of Intermediate-Mass Ratio Inspirals in Globular Clusters: Revealing the Brownian Motion with Gravitational Waves (2025)
  • [2] Rui Xu, Alejandro Torres-Orjuela, Lars Andersson, Pau Amaro Seoane, The I-Love universal relation for polytropic stars under Newtonian gravity (2025)
  • [3] Veronica Vazquez-Aceves, Yiren Lin, Alejandro Torres-Orjuela, SgrA* spin and mass estimates through the detection of multiple extremely large mass-ratio inspirals (2024)
  • [4] Adam Abdalla et al. , Terrestrial Very-Long-Baseline Atom Interferometry: Summary of the Second Workshop (2024)
  • [5] Alejandro Torres-Orjuela, Black hole spectroscopy with ground-based atom interferometer and space-based laser interferometer gravitational wave detectors, AVS Quantum Science, 6(045002) (2024)
  • [6] En-Kun Li et al., Gravitational Wave Astronomy With TianQin (2024)
  • [7] Alejandro Torres-Orjuela, Joint gravitational wave detection by TianQin and LISA (2024)
  • [8] Chang-Qing Ye, Hui-Min Fan, Alejandro Torres-Orjuela, Jian-dong Zhang, Yi-Ming Hu, Identification of gravitational waves from extreme-mass-ratio inspirals, Physical Review D, 109(124034) (2024)
  • [9] Alejandro Torres-Orjuela et al., GWnext 2024: Meeting Summary (2024)
  • [10] Alejandro Torres-Orjuela, How the spherical modes of gravitational waves can be detected despite only seeing one ray, Classical and Qunatum Gravity, 41(117001) (2024)
  • [11] S, Abend et al., Terrestrial Very-Long-Baseline Atom Interferometry: Workshop Summary, AVS Quantum Science, 6(024701) (2024)
  • [12] Alejandro Torres-Orjuela, Shun-Jia Huang, Zheng-Cheng Liang, Shuai Liu, Hai-Tian Wang, Chang-Qing Ye, Yi-Ming Hu, Jianwei Mei, Detection of astrophysical gravitational wave sources by TianQin and LISA, Science China Physics, Mechanics & Astronomy, 67(259511) (2024)
  • [13] Monica Colpi et al., LISA Definition Study Report (2024)
  • [14] Sophia L. Morton, Stefano Rinaldi, Alejandro Torres-Orjuela, Andrea Derdzinski, M. Paola Vaccaro, Walter Del Pozzo, GW190521: A binary black hole merger inside an active galactic nucleus?, Physical Review D, 108(123039) (2023)
  • [15] Alejandro Torres-Orjuela, Detecting intermediate-mass black hole binaries with atom interferometer observatories: Using the resonant mode for the merger phase, AVS Quantum Science, 5(045002) (2023)
  • [16] Verónica Vázquez-Aceves, Yiren Lin, Alejandro Torres-Orjuela, Sgr A* Spin and Mass Estimates through the Detection of an Extremely Large Mass-ratio Inspiral, The Astrophysical Journal, 95(2) (2023)
  • [17] Zoltan Haiman et al., Massive Black Hole Binaries as LISA Precursors in the Roman High Latitude Time Domain Survey (2023)
  • [18] Alejandro Torres-Orjuela, Xian Chen, Moving gravitational wave sources at cosmological distances: Impact on the measurement of the Hubble constant, Physical Review D, 197(103044) (2023)
  • [19] Han Yan, Xian Chen, Alejandro Torres-Orjuela, Calculating the gravitational waves emitted from high-speed sources, Physical Review D, 107(103044) (2023)
  • [20] Pau Amaro Seoane et al., Astrophysics with the Laser Interferometer Space Antenna, Living Reviews in Relativity, 26(2) (2023)
  • [21] Alejandro Torres-Orjuela, Xian Chen, Pau Amaro-Seoane, Excitation of gravitational wave modes by a center-of-mass velocity of the source, Physical Review D, 104(123025) (2021)
  • [22] Alejandro Torres-Orjuela, Pau Amaro Seoane, Zeyuan Xuan, Alvin J. K. Chua, Maria J. B. Rosell, Xian Chen, Exciting modes due to the aberration of gravitational waves: Measurability for extreme-mass-ratio inspirals, Physical Review Letters, 127(041102) (2021)
  • [23] Alejandro Torres-Orjuela, Xian Chen, Pau Amaro-Seoane, Phase shift of gravitational waves induced by aberration, Physical Review D, 101(083028) (2020)
  • [24] Alejandro Torres-Orjuela, Xian Chen, Zhoujian Cao, Pau Amaro-Seoane, Peng Peng, Detecting the Beaming Effect of Gravitational Waves, Physical Review D, 100(063012) (2019)
  • [25] Johannes Broedel, Martin Sprenger, Alejandro Torres-Orjuela, Towards single-valued polylogarithms in two variables for the seven-point remainder function in multi-Regge-kinematics, Nuclear Physics B, 915, 394-413 (2017)

 

Update Time: 2025-03-28 01:57:08