Phone:  +49 (89) 289 - 53620

              +49 (89) 30000 - 2015

E-Mail: sherry.suyu@tum.de

Room: 3007

Personal homepage

Research areas:

• Observational cosmology
• Cosmic expansion rate
• Dark energy and dark matter
• Galaxy evolution
• Supermassive black holes
• Gravitational lensing
• Supernovae
• Bayesian inference and methods
• Deep learning

Selected Publications:

Suyu, S. H., Huber, S., Cañameras, R., Kromer, M., Schuldt, S., Taubenberger, S., Yıldırım, A., Bonvin, V., Chan, J. H. H., Courbin, F., et al. (2020) "HOLISMOKES. I. Highly Optimised Lensing Investigations of Supernovae, Microlensing Objects, and Kinematics of Ellipticals and Spirals," A&A, 644, A162

Wong, K. C., Suyu, S. H., Chen, G. C.-F., Rusu, C. E., Millon, M., Sluse, D., Bonvin, V., Fassnacht, C. D., Taubenberger, S., Auger, M. W., et al. (2020) "H0LiCOW - XIII. A 2.4 per cent measurement of H₀ from lensed quasars: 5.3σ tension between early- and late-Universe probes," MNRAS, 498, 1420-1439

Suyu, S. H., Bonvin, V., Courbin, F., Fassnacht, C. D., Rusu, C. E., Sluse, D., Treu, T., Wong, K. C., Auger, M. W., Ding, X., et al. (2017) "H0LiCOW - I. H₀ Lenses in COSMOGRAIL's Wellspring: program overview," MNRAS, 468, 2590-2604

Suyu, S. H., Hensel, S. W., McKean, J. P., Fassnacht, C. D., Treu, T., Halkola, A., Norbury, M., Jackson, N., Schneider, P., Thompson, D., et al. (2012) "Disentangling Baryons and Dark Matter in the Spiral Gravitational Lens B1933+503," ApJ, 750, 10

Suyu, S. H., & Halkola, A. (2010) "The halos of satellite galaxies: the companion of the massive elliptical lens SL2S J08544-0121," A&A, 524, A94

Phone:  +49 (89) 289 - 53627

E-Mail: irham.andika@tum.de

Room: 3111

Research areas:

• Formation and evolution of active galaxies in the early universe
• Cosmic reionization and properties of the intergalactic medium at high redshifts
• Extragalactic astrophysics with gravitational lensing
• Photometric redshifts estimation and applications
• Predictive analytics with the machine and deep learning

Selected publications:

Andika, I. T., Jahnke, K., van der Wel, A., Bañados, E., Bosman, S. E. I., Davies, F. B., Eilers, A.-C., Jaelani, A. T., Mazzucchelli, C., Onoue, M., et al. (2023) "When Spectral Modeling Meets Convolutional Networks: A Method for Discovering Reionization-era Lensed Quasars in Multiband Imaging Data," ApJ, 943, 150

Andika, I. T. (2022) "The Hunt for Quasars at Cosmic Dawn: Insights into Redshift > 6 Weak-Line Active Galaxies and Deep Learning for Discovering Lensed Sources," PhDT

Andika, I. T., Jahnke, K., Bañados, E., Bosman, S. E. I., Davies, F. B., Eilers, A.-C., Farina, E. P., Onoue, M., & van der Wel, A. (2022) "Staring at the Shadows of Archaic Galaxies: Damped Lyα and Metal Absorbers Toward a Young z ∼ 6 Weak-line Quasar," AJ, 163, 251

Wenzl, L., Schindler, J.-T., Fan, X., Andika, I. T., Bañados, E., Decarli, R., Jahnke, K., Mazzucchelli, C., Onoue, M., Venemans, B. P., et al. (2021) "Random Forests as a Viable Method to Select and Discover High-redshift Quasars," AJ, 162, 72

Bañados, E., Mazzucchelli, C., Momjian, E., Eilers, A.-C., Wang, F., Schindler, J.-T., Connor, T., Andika, I. T., Barth, A. J., Carilli, C., et al. (2021) "The Discovery of a Highly Accreting, Radio-loud Quasar at z = 6.82," ApJ, 909, 80

Marian, V., Jahnke, K., Andika, I., Bañados, E., Bennert, V. N., Cohen, S., Husemann, B., Kaasinen, M., Koekemoer, A. M., Mechtley, M., et al. (2020) "A Significant Excess in Major Merger Rate for AGNs with the Highest Eddington Ratios at z < 0.2," ApJ, 904, 79

Andika, I. T., Jahnke, K., Onoue, M., Bañados, E., Mazzucchelli, C., Novak, M., Eilers, A.-C., Venemans, B. P., Schindler, J.-T., Walter, F., et al. (2020) "Probing the Nature of High-redshift Weak Emission Line Quasars: A Young Quasar with a Starburst Host Galaxy," ApJ, 903, 34

Onoue, M., Bañados, E., Mazzucchelli, C., Venemans, B. P., Schindler, J.-T., Walter, F., Hennawi, J. F., Andika, I. T., Davies, F. B., Decarli, R., et al. (2020) "No Redshift Evolution in the Broad-line-region Metallicity up to z = 7.54: Deep Near-infrared Spectroscopy of ULAS J1342+0928," ApJ, 898, 105

Andika, I. T., Arifyanto, M. I., & Kollatschny, W. (2020) "A study of [O III]/[O II] lines ratio in type 1 active galactic nucleus: Influence of radio jets and Eddington ratio to narrow line region emission," AN, 341, 300-313

Phone:  +49 (89) 289 - 53622

E-Mail: ge62yic@mytum.de

Room: 3003

Research areas:

• Time delay cosmography
• Novel statistics in cosmology
• Dark energy
• Geometry of the large-scale structure

Publications:

Bag, S., Shafieloo, A., Liao, K., and Treu, T. (2022), "Identifying Lensed Quasars and Measuring Their Time Delays from Unresolved Light Curves", ApJ, 927, 191.

Bag, S., Sohn, W., Shafieloo, A., and Liao, K. (2022), "Harnessing Unresolved Lensed Quasars: The Mathematical Foundation of the Fluctuation Curve", arXiv e-prints 2209.11078 (ApJ press)

Bag, S., Kim, A. G., Linder, E. V., and Shafieloo, A. (2021), "Be It Unresolved: Measuring Time Delays from Lensed Supernovae", ApJ, 910, 65

Denissenya, M., Bag, S., Kim, A. G., Linder, E. V., and Shafieloo, A. (2022), "Out of one, many: distinguishing time delays from lensed supernovae", MNRAS, 511, 1210

Bag, S., Shafieloo, A., Smith, R., Chung, H., Linder, E. V., Park, C., Abylkairov, Y. S., and Yelshibekov, K., (2022), "A novel approach for calculating galaxy rotation curves using spaxel cross-correlation and iterative smoothing", MNRAS, 514, 2278

Bag, S., Mondal, R., Sarkar, P., Bharadwaj, S., Choudhury, T. R., and Sahni, V. (2019), "Studying the morphology of H I isodensity surfaces during reionization using Shapefinders and percolation analysis", MNRAS, 485, 2235

Bag, S., Mondal, R., Sarkar, P., Bharadwaj, S., and Sahni, V. (2018), "The shape and size distribution of H II regions near the percolation transition", MNRAS, 477, 1984

Bag, S., Mishra, S. S., and Sahni, V. (2018), "New tracker models of dark energy", JCAP, 08 (2018), 009

Alam, U., Bag, S., and Sahni, V. (2017), “Constraining the cosmology of the phantom brane using distance measures”, PRD, 95, 023524

Bag, S., Viznyuk, A., Shtanov, Y., and Sahni, V. (2016), "Cosmological perturbations on the phantom brane", JCAP, 07 (2016), 038

Phone:  +49 (89) 289 - 53627

E-Mail: aymeric.galan@tum.de

Room: 3111

Research areas:

• Strong gravitational lensing
• Time delay cosmography
• Wavelets and sparsity
• Inverse problems
• Bayesian inference

Selected publications:

Galan, A., Vernardos, G., Minor, Q., Sluse, D., Van de Vyvere, L., & Gomer, M. (2024) "Exploiting the diversity of modeling methods to probe systematic biases in strong lensing analyses," A&A, 692, A87

Galan, A., Caminha, G. B., Knollmüller, J., Roth, J., & Suyu, S. H. (2024) "El Gordo needs El Anzuelo: Probing the structure of cluster members with multi-band extended arcs in JWST data," A&A, 689 A304

Galan, A., Vernardos, G., Peel, A., Courbin, F., & Starck, J.-L. (2022) "Using wavelets to capture deviations from smoothness in galaxy-scale strong lenses," A&A, 668, A155

Millon, M., Galan, A., Courbin, F., Treu, T., Suyu, S. H., Ding, X., Birrer, S., Chen, G. C.-F., Shajib, A. J., Sluse, D., et al. (2020) "TDCOSMO. I. An exploration of systematic uncertainties in the inference of H<SUB>0</SUB> from time-delay cosmography," A&A, 639, A101

Phone:  +49 (89) 289 - 53621

E-Mail: ge83qet@mytum.de

Room: 3005

Research areas:

• Cosmology and extragalactic astrophysics with strong gravitational lensing
• Machine learning: search for strong-lens systems
• Black hole physics: black hole mass estimate of lensed quasars
• Gravitational microlensing
• Observational astronomy

Selected publications:

Melo, A., Motta, V., Godoy, N., Mejia-Restrepo, J., Assef, R. J., Mediavilla, E., Falco, E., Ávila-Vera, F., & Jerez, R. (2021) “First black hole mass estimation for the quadruple lensed system WGD2038-4008,” A&A, 656, A108

Millon, M., Courbin, F., Bonvin, V., Buckley-Geer, E., Fassnacht, C. D., et al. (2020) “TDCOSMO. II. Six new time delays in lensed quasars from high-cadence monitoring at the MPIA 2.2 m telescope,” A&A, 642, A193

Lemon, C., Auger, M. W., McMahon, R., et al. (2020) “The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2017/2018 follow-up campaign: discovery of 10 lensed quasars and 10 quasar pairs,” MNRAS, 494, 3491-3511

Phone:  +49 (89) 289 - 53624

E-Mail: jana.grupa@tum.de

Room: 3101

Research areas:

• strong lensing
• time-delay cosmography
• type II supernovae
• microlensing

Selected publications:

Bayer, J., Huber, S., Vogl, C., Suyu, S. H., Taubenberger, S., Sluse, D., Chan, J. H. H., & Kerzendorf, W. E. (2021) "HOLISMOKES. V. Microlensing of type II supernovae and time-delay inference through spectroscopic phase retrieval," A&A, 653, A29

Grupa, J., Taubenberger, S., Suyu, S. H., Huber, S., Vogl, C., Sluse, D. (2025) "HOLISMOKES. XIV. Time-delay and differential dust extinction determination with lensed type II supernova color curves," A&A, 693, A292

Phone:  +49 (89) 289 - 53625

E-Mail: ge82qog@mytum.de

Room: 3101

Research areas:

• expansion rate
• gravitational lensing
• automatic differentiation
• dark matter

Selected publications:

Wang, H., Cañameras, R., Caminha, G. B., Suyu, S. H., Yıldırım, A., Chirivì, G., Christensen, L., Grillo, C., & Schuldt, S. (2022) "Constraining the multi-scale dark-matter distribution in CASSOWARY 31 with strong gravitational lensing and stellar dynamics," A&A, 668, A162

Phone: +49 (89) 289 - 53626

E-Mail: elias.mamuzic@tum.de

Room: 3101

Research areas:

• Strong lensing
• Tidal disruption events
• Microlensing

Phone: +49 (89) 289 - 53626

E-Mail: allan.g.schweinfurth(at)tum.de

Room: 3101

Research areas:

• Lens modelling

Phone: +49 (89) 289 - 53626

E-Mail: martinllg04@gmail.com

Room: 3101

Research areas:

• Lens modelling