Radoslaw Jan Wojtak
Associate Professor
DARK
Jagtvej 155A
2200 København N
- 2024
- Published
A new derivation of the Hubble constant from γ-ray attenuation using improved optical depths for the Fermi and CTA era
Domínguez, A., Østergaard kirkeberg, P., Wojtak, Radoslaw Jan, Saldana-lopez, A., Desai, A., Primack, J. R., Finke, J., Ajello, M., Pérez-gonzález, P. G., Paliya, V. S. & Hartmann, D., 2 Jan 2024, In: Monthly Notices of the Royal Astronomical Society. 527, 3, p. 4632-4642 11 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2023
- Published
The Young Supernova Experiment Data Release 1 (YSE DR1): Light Curves and Photometric Classification of 1975 Supernovae
Aleo, P. D., Malanchev, K., Sharief, S., Jones, D. O., Narayan, G., Foley, R. J., Villar, V. A., Angus, C. R., Baldassare, V. F., Bustamante-Rosell, M. J., Chatterjee, D., Cold, C., Coulter, D. A., Davis, K. W., Dhawan, S., Drout, M. R., Engel, A., French, K. D., Gagliano, A., Gall, C. & 67 others, , 1 May 2023, In: Astrophysical Journal, Supplement Series. 266, 1, 46 p., 9.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
LensWatch. I. Resolved HST Observations and Constraints on the Strongly Lensed Type Ia Supernova 2022qmx (“SN Zwicky”)
Pierel, J. D. R., Arendse, N., Ertl, S., Huang, X., Moustakas, L. A., Schuldt, S., Shajib, A. J., Shu, Y., Birrer, S., Bronikowski, M., Hjorth, J., Suyu, S. H., Agarwal, S., Agnello, A., Bolton, A. S., Chakrabarti, S., Cold, C., Courbin, F., Della Costa, J. M., Dhawan, S. & 25 others, , 15 May 2023, In: Astrophysical Journal. 948, 2, 23 p., 115.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Measuring the Hubble constant with kilonovae using the expanding photosphere method
Sneppen, Albert Bjerregård, Watson, Darach Jafar, Poznanski, D., Just, O., Bauswein, A. & Wojtak, Radoslaw Jan, 2 Oct 2023, In: Astronomy & Astrophysics. 678, 13 p., A14.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Relative Intrinsic Scatter in Hierarchical Type Ia Supernova Sibling Analyses: Application to SNe 2021hpr, 1997bq, and 2008fv in NGC 3147
Ward, S. M., Thorp, S., Mandel, K. S., Dhawan, S., Jones, D. O., Taggart, K., Foley, R. J., Narayan, G., Chambers, K. C., Coulter, D. A., Davis, K. W., De Boer, T., De Soto, K., Earl, N., Gagliano, A., Gao, H., Hjorth, J., Huber, M. E., Izzo, L., Langeroodi, D. & 5 others, , 13 Oct 2023, In: Astrophysical Journal. 956, 2, 17 p., 111.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Two-population Bayesian hierarchical model of Type Ia supernovae
Wojtak, Radoslaw Jan, Hjorth, Jens & Hjortlund, Jacob Osman, 11 Sep 2023, In: Monthly Notices of the Royal Astronomical Society. 525, 4, p. 5187-5203 17 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2022
- Published
A fast-rising tidal disruption event from a candidate intermediate-mass black hole
Angus, C. R., Baldassare, V. F., Mockler, B., Foley, R. J., Ramirez-Ruiz, E., Raimundo, S., French, K. D., Auchettl, K., Pfister, H., Gall, C., Hjorth, J., Drout, M. R., Alexander, K. D., Dimitriadis, G., Hung, T., Jones, D. O., Rest, A., Siebert, M. R., Taggart, K., Terreran, G. & 19 others, , 10 Nov 2022, In: Nature Astronomy. 6, p. 1452-1463 15 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
AI-driven spatio-temporal engine for finding gravitationally lensed type Ia supernovae
Kodi Ramanah, D., Arendse, N. & Wojtak, Radoslaw Jan, 14 Apr 2022, In: Monthly Notices of the Royal Astronomical Society. 512, 4, p. 5404-5417 14 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Intrinsic tension in the supernova sector of the local Hubble constant measurement and its implications
Wojtak, Radoslaw Jan & Hjorth, Jens, 2 Aug 2022, In: Monthly Notices of the Royal Astronomical Society. 515, 2, p. 2790-2799 10 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2021
- Published
The Young Supernova Experiment: Survey Goals, Overview, and Operations
Jones, D. O., Foley, R. J., Narayan, G., Hjorth, J., Huber, M. E., Aleo, P. D., Alexander, K. D., Angus, C. R., Auchettl, K., Baldassare, V. F., Bruun, S. H., Chambers, K. C., Chatterjee, D., Coppejans, D. L., Coulter, D. A., DeMarchi, L., Dimitriadis, G., Drout, M. R., Engel, A., French, K. D. & 51 others, , Feb 2021, In: Astrophysical Journal. 908, 2, 24 p., 143.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
A new measurement of the Hubble constant using Type la supernovae calibrated with surface brightness fluctuations
Khetan, N., Izzo, Luca, Branchesi, M., Wojtak, Radoslaw Jan, Cantiello, M., Murugeshan, C., Agnello, Adriano, Cappellaro, E., Della Valle, M., Gall, Christa, Hjorth, Jens, Benetti, S., Brocato, E., Burke, J., Hiramatsu, D., Howell, D. A., Tomasella, L. & Valenti, S., 12 Mar 2021, In: Astronomy & Astrophysics. 647, 20 p., A72.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Simulation-based inference of dynamical galaxy cluster masses with 3D convolutional neural networks
Ramanah, D. K., Wojtak, Radoslaw Jan & Arendse, N., 1 Mar 2021, In: Monthly Notices of the Royal Astronomical Society. 501, 3, p. 4080-4091 12 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2020
- Published
Cosmic dissonance: are new physics or systematics behind a short sound horizon?
Arendse, N., Wojtak, Radoslaw Jan, Agnello, Adriano, Chen, G. C., Fassnacht, C. D., Sluse, D., Hilbert, S., Millon, M., Bonvin, V., Wong, K. C., Courbin, F., Suyu, S. H., Birrer, S., Treu, T. & Koopmans, L. V. E., 7 Jul 2020, In: Astronomy & Astrophysics. 639, 13 p., A57.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Pan-STARRS1 Transient Discovery Report for 2020-01-08
Jones, D. O., French, K. D., Agnello, A., Angus, C. R., Ansari, Z., Arendse, N., Gall, C., Grillo, C., Bruun, S. H., Hede, C., Hjorth, J., Izzo, L., Korhonen, H., Raimundo, S., Ramanah, D. K., Sarangi, A., Wojtak, R., Chambers, K. C., Huber, M. E., Magnier, E. A. & 31 others, , 1 Jan 2020, In: Transient Name Server Discovery Report, No. 2020-76. 76Research output: Contribution to journal › Journal article › Research › peer-review
- Published
YSE/Pan-STARRS1 Transient Discovery Report for 2020-01-31
Jones, D. O., French, K. D., Agnello, A., Angus, C. R., Ansari, Z., Arendse, N., Gall, C., Grillo, C., Bruun, S. H., Hede, C., Hjorth, J., Izzo, L., Korhonen, H., Raimundo, S., Ramanah, D. K., Sarangi, A., Wojtak, R., Chambers, K. C., Huber, M. E., Magnier, E. A. & 31 others, , 1 Jan 2020, In: Transient Name Server Discovery Report, No. 2020-76. 341Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Dynamical mass inference of galaxy clusters with neural flows
Ramanah, D. K., Wojtak, Radoslaw Jan, Ansari, Z., Gall, Christa & Hjorth, Jens, 21 Sep 2020, In: Monthly Notices of the Royal Astronomical Society. 499, 2, p. 1985-1997 13 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
The Lowest of the Low: Discovery of SN 2019gsc and the Nature of Faint Iax Supernovae
Srivastav, S., Smartt, S. J., Leloudas, G., Huber, M. E., Chambers, K., Malesani, D. B., Hjorth, Jens, Gillanders, J. H., Schultz, A., Sim, S. A., Auchettl, K., Fynbo, Johan Peter Uldall, Gall, Christa, McBrien, O. R., Rest, A., Smith, K. W., Wojtak, Radoslaw Jan & Young, D. R., 1 Apr 2020, In: Astrophysical Journal Letters. 892, 2, 8 p., L24.Research output: Contribution to journal › Letter › Research › peer-review
- 2019
- Published
Low-redshift measurement of the sound horizon through gravitational time-delays
Arendse, N., Agnello, Adriano & Wojtak, Radoslaw Jan, 9 Dec 2019, In: Astronomy & Astrophysics. 632, 6 p., A91.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
A New Measurement of the Hubble Constant and Matter Content of the Universe Using Extragalactic Background Light γ-Ray Attenuation
Dominguez, A., Wojtak, Radoslaw Jan, Finke, J., Ajello, M., Helgason, K., Prada, F., Desai, A., Paliya, V., Marcotulli, L. & Hartmann, D. H., 10 Nov 2019, In: Astrophysical Journal. 885, 2, 7 p., 137.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Einstein-Vlasov calculations of structure formation
East, W. E., Wojtak, Radoslaw Jan & Pretorius, F., 27 Nov 2019, In: Physical Review D. 100, 10, 10 p., 103533.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Magnified or multiply imaged? - Search strategies for gravitationally lensed supernovae in wide-field surveys
Wojtak, Radoslaw Jan, Hjorth, Jens & Gall, Christa, 1 Aug 2019, In: Monthly Notice of the Royal Astronomical Society. 487, 3, p. 3342-3355 13 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
The Hubble-Lemaitre constant and sound horizon from low-redshift probes
Wojtak, Radoslaw Jan & Agnello, Adriano, 4 Jul 2019, In: Monthly Notices of the Royal Astronomical Society. 486, 4, p. 5046-5051 6 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2018
- Published
Comparing fully general relativistic and Newtonian calculations of structure formation
East, W. E., Wojtak, Radoslaw Jan & Abel, T., 13 Feb 2018, In: Physical Review D. 97, 4, 15 p., 043509.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Galaxy Cluste Mass Reconstruction Project - III. The impact of dynamical substructure on cluster mass estimates
Old, L., Wojtak, Radoslaw Jan, Pearce, F. R., Gray, M. E., Mamon, G. A., Sifon, C., Tempel, E., Biviano, A., Yee, H. K. C., de Carvalho, R., Mueller, V., Sepp, T., Skibba, R. A., Croton, D., Bamford, S. P., Power, C., von der Linden, A. & Saro, A., 21 Mar 2018, In: Monthly Notices of the Royal Astronomical Society. 475, 1, p. 853-866Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Galaxy Cluster Mass Reconstruction Project - IV. Understanding the effects of imperfect membership on cluster mass estimation
Wojtak, Radoslaw Jan, Old, L., Mamon, G. A., Pearce, F. R., de Carvalho, R., Sifon, C., Gray, M. E., Skibba, R. A., Croton, D., Bamford, S., Gifford, D., von der Linden, A., Munoz-Cuartas, J. C., Mueller, V., Pearson, R. J., Rozo, E., Rykoff, E., Saro, A., Sepp, T. & Tempel, E., 2 Nov 2018, In: Monthly Notices of the Royal Astronomical Society. 481, 1, p. 324-340 17 p.Research output: Contribution to journal › Journal article › Research › peer-review
ID: 40108628
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The Distance to NGC 4993: The Host Galaxy of the Gravitational-wave Event GW170817
Research output: Contribution to journal › Journal article › Research › peer-review
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70
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Cosmic dissonance: are new physics or systematics behind a short sound horizon?
Research output: Contribution to journal › Journal article › Research › peer-review
Published -
57
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Low-redshift measurement of the sound horizon through gravitational time-delays
Research output: Contribution to journal › Journal article › Research › peer-review
Published