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 - 53626

E-Mail: ge62yic@mytum.de

Room: 3101

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 - 53621

E-Mail: gb.caminha@tum.de

Room: 3005

Research areas:

• Strong gravitational lensing
• Galaxy clusters
• Observational cosmology

Selected publications:

Caminha, G. B., Suyu, S. H., Mercurio, A., Brammer, G., Bergamini, P., Acebron, A., & Vanzella, E. (2022) "First JWST observations of a gravitational lens. Mass model from new multiple images with near-infrared observations of SMACS J0723.3−7327," A&A, 666, L9 

Caminha, G. B., Grillo, C., Rosati, P., Liu, A., Acebron, A., Bergamini, P., Caputi, K. I., Mercurio, A., Tozzi, P., Vanzella, E., et al. (2022) "A MUSE view of the massive merging galaxy cluster ACT-CL J0102-4915 (El Gordo) at z = 0.87: robust strong lensing model and data release," arXiv, arXiv:2209.02718 

Caminha, G. B., Suyu, S. H., Grillo, C., & Rosati, P. (2022) "Galaxy cluster strong lensing cosmography. Cosmological constraints from a sample of regular galaxy clusters," A&A, 657, A83 

Caminha, G. B., Rosati, P., Grillo, C., Rosani, G., Caputi, K. I., Meneghetti, M., Mercurio, A., Balestra, I., Bergamini, P., Biviano, A., et al. (2019) "Strong lensing models of eight CLASH clusters from extensive spectroscopy: Accurate total mass reconstructions in the cores," A&A, 632, A36  

Caminha, G. B., Grillo, C., Rosati, P., Meneghetti, M., Mercurio, A., Ettori, S., Balestra, I., Biviano, A., Umetsu, K., Vanzella, E., et al. (2017) "Mass distribution in the core of MACS J1206. Robust modeling from an exceptionally large sample of central multiple images," A&A, 607, A93 

Caminha, G. B., Grillo, C., Rosati, P., Balestra, I., Mercurio, A., Vanzella, E., Biviano, A., Caputi, K. I., Delgado-Correal, C., Karman, W., et al. (2017) "A refined mass distribution of the cluster MACS J0416.1-2403 from a new large set of spectroscopic multiply lensed sources," A&A, 600, A90 

Caminha, G. B., Karman, W., Rosati, P., Caputi, K. I., Arrigoni Battaia, F., Balestra, I., Grillo, C., Mercurio, A., Nonino, M., & Vanzella, E. (2016) "Discovery of a faint, star-forming, multiply lensed, Lyman-α blob," A&A, 595, A100 

Caminha, G. B., Grillo, C., Rosati, P., Balestra, I., Karman, W., Lombardi, M., Mercurio, A., Nonino, M., Tozzi, P., Zitrin, A., et al. (2016) "CLASH-VLT: A highly precise strong lensing model of the galaxy cluster RXC J2248.7-4431 (Abell S1063) and prospects for cosmography," A&A, 587, A80 

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

Biggio, L., Vernardos, G., Galan, A., & Peel, A. (2022) "Modeling lens potentials with continuous neural fields in galaxy-scale strong lenses," arXiv, arXiv:2210.09169 

Galan, A., Peel, A., Joseph, R., Courbin, F., & Starck, J.-L. (2021) "SLITRONOMY: Towards a fully wavelet-based strong lensing inversion technique," A&A, 647, A176 

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 - 53623

E-Mail: christian.vogl@tum.de

Room: 3001

Research areas:

• cosmic expansion rate
• lensed and non-lensed supernovae
• Bayesian inference
• machine learning

Selected publications:

Csörnyei, G., Vogl, C., Taubenberger, S., Flörs, A., Blondin, S., Cudmani, M. G., Holas, A., Kressierer, S., Leibundgut, B., & Hillebrandt, W. (2023) "Consistency of Type IIP supernova sibling distances," A&A, 672, A129

Williamson, M., Vogl, C., Modjaz, M., Kerzendorf, W., Singhal, J., Boland, T., Burke, J., Chen, Z., Hiramatsu, D., Galbany, L., et al. (2023) "SN 2019ewu: A Peculiar Supernova with Early Strong Carbon and Weak Oxygen Features from a New Sample of Young SN Ic Spectra," ApJL, 944, L49

Perego, A., Vescovi, D., Fiore, A., Chiesa, L., Vogl, C., Benetti, S., Bernuzzi, S., Branchesi, M., Cappellaro, E., Cristallo, S., et al. (2022) "Production of Very Light Elements and Strontium in the Early Ejecta of Neutron Star Mergers," ApJ, 925, 22

Vasylyev, S. S., Filippenko, A. V., Vogl, C., Brink, T. G., Brown, P. J., de Jaeger, T., Matheson, T., Gal-Yam, A., Mazzali, P. A., Modjaz, M., et al. (2022) "Early-time Ultraviolet Spectroscopy and Optical Follow-up Observations of the Type IIP Supernova 2021yja," ApJ, 934, 134

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

Kerzendorf, W. E., Vogl, C., Buchner, J., Contardo, G., Williamson, M., & van der Smagt, P. (2021) "Dalek: A Deep Learning Emulator for TARDIS," ApJL, 910, L23

Vogl, C., Kerzendorf, W. E., Sim, S. A., Noebauer, U. M., Lietzau, S., & Hillebrandt, W. (2020) "Spectral modeling of type II supernovae. II. A machine-learning approach to quantitative spectroscopic analysis," A&A, 633, A88

Taubenberger, S., Floers, A., Vogl, C., Kromer, M., Spyromilio, J., Aldering, G., Antilogus, P., Bailey, S., Baltay, C., Bongard, S., et al. (2019) "SN 2012dn from early to late times: 09dc-like supernovae reassessed," MNRAS, 488, 5473-5488 

Vogl, C., Sim, S. A., Noebauer, U. M., Kerzendorf, W. E., & Hillebrandt, W. (2019) "Spectral modeling of type II supernovae. I. Dilution factors," A&A, 621, A29

Phone:  +49 (89) 289 - 53624

E-Mail: sebastian.ertl@tum.de

Room: 3101

Research areas:

• strong lensing
• time-delay cosmography
• modeling of lensed quasars

Selected publications:

Ertl, S., Schuldt, S., Suyu, S. H., Schmidt, T., Treu, T., Birrer, S., Shajib, A. J., & Sluse, D. (2022) "TDCOSMO XI. Automated Modeling of 9 Strongly Lensed Quasars and Comparison Between Lens Modeling Software," arXiv, arXiv:2209.03094

Ertl, S., Schuldt, S., Suyu, S. H., Schechter, P. L., Halkola, A., & Wagner, J. (2023) "The missing quasar image in the gravitationally lensed quasar HE0230$-$2130: implications on dark satellites and the cored lens mass distribution," arXiv, arXiv:2308.05181

Gomer, M. R., Ertl, S., Biggio, L., Wang, H., Galan, A., Van de Vyvere, L., Sluse, D., Vernardos, G., & Suyu, S. H. (2023) "Accelerating galaxy dynamical modeling using a neural network for joint lensing and kinematics analyses," arXiv, arXiv:2307.10381

Pierel, J. D. R., Arendse, N., Ertl, S., Huang, X., Moustakas, L. A., Schuldt, S., Shajib, A. J., Shu, Y., Birrer, S., Bronikowski, M., et al. (2022) "LensWatch: I. Resolved HST Observations and Constraints on the Strongly-Lensed Type Ia Supernova 2022qmx ("SN Zwicky")," arXiv, arXiv:2211.03772

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

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

Phone: +49 (89) 289 - 53626

E-Mail: allan.g.schweinfurth@tum.de

Room: 3101

Research areas:

• Lens modelling