Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Radosław Wojtak"'
Autor:
Sam M. Ward, Stephen Thorp, Kaisey S. Mandel, Suhail Dhawan, David O. Jones, Kirsty Taggart, Ryan J. Foley, Gautham Narayan, Kenneth C. Chambers, David A. Coulter, Kyle W. Davis, Thomas de Boer, Kaylee de Soto, Nicholas Earl, Alex Gagliano, Hua Gao, Jens Hjorth, Mark E. Huber, Luca Izzo, Danial Langeroodi, Eugene A. Magnier, Peter McGill, Armin Rest, César Rojas-Bravo, Radosław Wojtak, Young Supernova Experiment
Publikováno v:
The Astrophysical Journal, Vol 956, Iss 2, p 111 (2023)
We present Young Supernova Experiment grizy photometry of SN 2021hpr, the third Type Ia supernova sibling to explode in the Cepheid calibrator galaxy, NGC 3147. Siblings are useful for improving SN-host distance estimates and investigating their cont
Externí odkaz:
https://doaj.org/article/a8b7d9b52c0d4588a19f6edbb62348c5
Autor:
Radosław Wojtak, Jens Hjorth
Publikováno v:
Wojtak, R & Hjorth, J 2022, ' Intrinsic tension in the supernova sector of the local Hubble constant measurement and its implications ', Monthly Notices of the Royal Astronomical Society, vol. 515, no. 2, pp. 2790-2799 . https://doi.org/10.1093/mnras/stac1878
We reanalyse observations of type Ia supernovae (SNe) and Cepheids used in the local determination of the Hubble constant and find strong evidence that SN standardisation in the calibration sample (galaxies with observed Cepheids) require a steeper s
Publikováno v:
Ramanah, D K, Wojtak, R, Ansari, Z, Gall, C & Hjorth, J 2020, ' Dynamical mass inference of galaxy clusters with neural flows ', Monthly Notices of the Royal Astronomical Society, vol. 499, no. 2, pp. 1985-1997 . https://doi.org/10.1093/mnras/staa2886
We present an algorithm for inferring the dynamical mass of galaxy clusters directly from their respective phase-space distributions, i.e. the observed line-of-sight velocities and projected distances of galaxies from the cluster centre. Our method e
Autor:
Elcio Abdalla, Guillermo Franco Abellán, Amin Aboubrahim, Adriano Agnello, Özgür Akarsu, Yashar Akrami, George Alestas, Daniel Aloni, Luca Amendola, Luis A. Anchordoqui, Richard I. Anderson, Nikki Arendse, Marika Asgari, Mario Ballardini, Vernon Barger, Spyros Basilakos, Ronaldo C. Batista, Elia S. Battistelli, Richard Battye, Micol Benetti, David Benisty, Asher Berlin, Paolo de Bernardis, Emanuele Berti, Bohdan Bidenko, Simon Birrer, John P. Blakeslee, Kimberly K. Boddy, Clecio R. Bom, Alexander Bonilla, Nicola Borghi, François R. Bouchet, Matteo Braglia, Thomas Buchert, Elizabeth Buckley-Geer, Erminia Calabrese, Robert R. Caldwell, David Camarena, Salvatore Capozziello, Stefano Casertano, Geoff C.-F. Chen, Jens Chluba, Angela Chen, Hsin-Yu Chen, Anton Chudaykin, Michele Cicoli, Craig J. Copi, Fred Courbin, Francis-Yan Cyr-Racine, Bożena Czerny, Maria Dainotti, Guido D'Amico, Anne-Christine Davis, Javier de Cruz Pérez, Jaume de Haro, Jacques Delabrouille, Peter B. Denton, Suhail Dhawan, Keith R. Dienes, Eleonora Di Valentino, Pu Du, Dominique Eckert, Celia Escamilla-Rivera, Agnès Ferté, Fabio Finelli, Pablo Fosalba, Wendy L. Freedman, Noemi Frusciante, Enrique Gaztañaga, William Giarè, Elena Giusarma, Adrià Gómez-Valent, Will Handley, Ian Harrison, Luke Hart, Dhiraj Kumar Hazra, Alan Heavens, Asta Heinesen, Hendrik Hildebrandt, J. Colin Hill, Natalie B. Hogg, Daniel E. Holz, Deanna C. Hooper, Nikoo Hosseininejad, Dragan Huterer, Mustapha Ishak, Mikhail M. Ivanov, Andrew H. Jaffe, In Sung Jang, Karsten Jedamzik, Raul Jimenez, Melissa Joseph, Shahab Joudaki, Marc Kamionkowski, Tanvi Karwal, Lavrentios Kazantzidis, Ryan E. Keeley, Michael Klasen, Eiichiro Komatsu, Léon V.E. Koopmans, Suresh Kumar, Luca Lamagna, Ruth Lazkoz, Chung-Chi Lee, Julien Lesgourgues, Jackson Levi Said, Tiffany R. Lewis, Benjamin L'Huillier, Matteo Lucca, Roy Maartens, Lucas M. Macri, Danny Marfatia, Valerio Marra, Carlos J.A.P. Martins, Silvia Masi, Sabino Matarrese, Arindam Mazumdar, Alessandro Melchiorri, Olga Mena, Laura Mersini-Houghton, James Mertens, Dinko Milaković, Yuto Minami, Vivian Miranda, Cristian Moreno-Pulido, Michele Moresco, David F. Mota, Emil Mottola, Simone Mozzon, Jessica Muir, Ankan Mukherjee, Suvodip Mukherjee, Pavel Naselsky, Pran Nath, Savvas Nesseris, Florian Niedermann, Alessio Notari, Rafael C. Nunes, Eoin Ó Colgáin, Kayla A. Owens, Emre Özülker, Francesco Pace, Andronikos Paliathanasis, Antonella Palmese, Supriya Pan, Daniela Paoletti, Santiago E. Perez Bergliaffa, Leandros Perivolaropoulos, Dominic W. Pesce, Valeria Pettorino, Oliver H.E. Philcox, Levon Pogosian, Vivian Poulin, Gaspard Poulot, Marco Raveri, Mark J. Reid, Fabrizio Renzi, Adam G. Riess, Vivian I. Sabla, Paolo Salucci, Vincenzo Salzano, Emmanuel N. Saridakis, Bangalore S. Sathyaprakash, Martin Schmaltz, Nils Schöneberg, Dan Scolnic, Anjan A. Sen, Neelima Sehgal, Arman Shafieloo, M.M. Sheikh-Jabbari, Joseph Silk, Alessandra Silvestri, Foteini Skara, Martin S. Sloth, Marcelle Soares-Santos, Joan Solà Peracaula, Yu-Yang Songsheng, Jorge F. Soriano, Denitsa Staicova, Glenn D. Starkman, István Szapudi, Elsa M. Teixeira, Brooks Thomas, Tommaso Treu, Emery Trott, Carsten van de Bruck, J. Alberto Vazquez, Licia Verde, Luca Visinelli, Deng Wang, Jian-Min Wang, Shao-Jiang Wang, Richard Watkins, Scott Watson, John K. Webb, Neal Weiner, Amanda Weltman, Samuel J. Witte, Radosław Wojtak, Anil Kumar Yadav, Weiqiang Yang, Gong-Bo Zhao, Miguel Zumalacárregui
Publikováno v:
JHEAp
JHEAp, 2022, 34, pp.49-211. ⟨10.1016/j.jheap.2022.04.002⟩
Journal of High Energy Astrophysics, 34, 49-211. ELSEVIER
Abdalla, E, Abellán, G F, Aboubrahim, A, Agnello, A, Akarsu, Ö, Alestas, G, Amendola, L, Anchordoqui, L, Andersson, R, Arendese, N, Balladini, M, Barger, V, Basilakos, S, Batista, R & Snowmass summer study group 2022, ' Cosmology intertwined : A review of the particle physics, astrophysics, and cosmology associated with the cosmological tensions and anomalies ', Journal of High Energy Astrophysics, vol. 34, pp. 49-211 . https://doi.org/10.1016/j.jheap.2022.04.002
Journal of High Energy Astrophysics
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
JHEAp, 2022, 34, pp.49-211. ⟨10.1016/j.jheap.2022.04.002⟩
Journal of High Energy Astrophysics, 34, 49-211. ELSEVIER
Abdalla, E, Abellán, G F, Aboubrahim, A, Agnello, A, Akarsu, Ö, Alestas, G, Amendola, L, Anchordoqui, L, Andersson, R, Arendese, N, Balladini, M, Barger, V, Basilakos, S, Batista, R & Snowmass summer study group 2022, ' Cosmology intertwined : A review of the particle physics, astrophysics, and cosmology associated with the cosmological tensions and anomalies ', Journal of High Energy Astrophysics, vol. 34, pp. 49-211 . https://doi.org/10.1016/j.jheap.2022.04.002
Journal of High Energy Astrophysics
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
E. Abdalla, G. F. Abellán, A. Aboubrahim et al.
The standard Λ Cold Dark Matter (ΛCDM) cosmological model provides a good description of a wide range of astrophysical and cosmological data. However, there are a few big open questions that mak
The standard Λ Cold Dark Matter (ΛCDM) cosmological model provides a good description of a wide range of astrophysical and cosmological data. However, there are a few big open questions that mak
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ae4e74ede8a11540ce4ce0042456ac1
https://hal.science/hal-03658872/document
https://hal.science/hal-03658872/document
Autor:
Adriano Agnello, Radosław Wojtak
Publikováno v:
Wojtak, R & Agnello, A 2019, ' The Hubble-Lemaitre constant and sound horizon from low-redshift probes ', Monthly Notices of the Royal Astronomical Society, vol. 486, no. 4, pp. 5046-5051 . https://doi.org/10.1093/mnras/stz1163
We revisit the claimed tension, or lack thereof, of measured values of the Hubble-Lema\^{i}tre parameter $H_0$ from Cosmic Microwave Background (CMB) data and low-redshift indicators. Baryon Acoustic Oscillations (BAO) rely on the scale of the sound
Autor:
Christa Gall, Enrico Cappellaro, L. Tomasella, S. Benetti, Daichi Hiramatsu, Luca Izzo, Nandita Khetan, Radosław Wojtak, C. Murugeshan, Adriano Agnello, Enzo Brocato, Stefano Valenti, D. Andrew Howell, Michele Cantiello, Jens Hjorth, M. Branchesi, Massimo Della Valle, Jamison Burke
Publikováno v:
Khetan, N, Izzo, L, Branchesi, M, Wojtak, R, Cantiello, M, Murugeshan, C, Agnello, A, Cappellaro, E, Della Valle, M, Gall, C, Hjorth, J, Benetti, S, Brocato, E, Burke, J, Hiramatsu, D, Howell, D A, Tomasella, L & Valenti, S 2021, ' A new measurement of the Hubble constant using Type la supernovae calibrated with surface brightness fluctuations ', Astronomy & Astrophysics, vol. 647, A72 . https://doi.org/10.1051/0004-6361/202039196
We present a new calibration of the peak absolute magnitude of SNe Type Ia based on the Surface Brightness Fluctuations (SBF) method, aimed at measuring the value of the Hubble constant. We build a sample of calibrating anchors consisting of 24 SNe h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::56422b1c6de2f65e93ce8f2f4ec8cd67
https://curis.ku.dk/ws/files/259824343/aa39196_20.pdf
https://curis.ku.dk/ws/files/259824343/aa39196_20.pdf
Publikováno v:
Ramanah, D K, Wojtak, R & Arendse, N 2021, ' Simulation-based inference of dynamical galaxy cluster masses with 3D convolutional neural networks ', Monthly Notices of the Royal Astronomical Society, vol. 501, no. 3, pp. 4080-4091 . https://doi.org/10.1093/mnras/staa3922
We present a simulation-based inference framework using a convolutional neural network to infer dynamical masses of galaxy clusters from their observed 3D projected phase-space distribution, which consists of the projected galaxy positions in the sky
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c5df9cc57c2934558ceeedd26fb0977
http://arxiv.org/abs/2009.03340
http://arxiv.org/abs/2009.03340
Autor:
Christa Gall, O. McBrien, S. Srivastav, K. C. Chambers, Radosław Wojtak, Adam Schultz, Armin Rest, K. W. Smith, Stephen J. Smartt, M. E. Huber, Katie Auchettl, Jens Hjorth, D. R. Young, J. Gillanders, S. A. Sim, Johan P. U. Fynbo, D. Malesani, Giorgos Leloudas
Publikováno v:
Srivastav, S, Smartt, S J, Leloudas, G, Huber, M E, Chambers, K, Malesani, D B, Hjorth, J, Gillanders, J H, Schultz, A, Sim, S A, Auchettl, K, Fynbo, J P U, Gall, C, McBrien, O R, Rest, A, Smith, K W, Wojtak, R & Young, D R 2020, ' The Lowest of the Low : Discovery of SN 2019gsc and the Nature of Faint Iax Supernovae ', Astrophysical Journal Letters, vol. 892, no. 2, L24 . https://doi.org/10.3847/2041-8213/ab76d5
Srivastav, S, Smartt, S J, Leloudas, G, Huber, M E, Chambers, K, Malesani, D B, Hjorth, J, Gillanders, J H, Schultz, A, Sim, S A, Auchettl, K, Fynbo, J P U, Gall, C, McBrien, O R, Rest, A, Smith, K W, Wojtak, R & Young, D R 2020, ' The Lowest of the Low: Discovery of SN 2019gsc and the Nature of Faint Iax Supernovae ', Astrophysical Journal Letters, vol. 892, no. 2, L24 . https://doi.org/10.3847/2041-8213/ab76d5
Srivastav, S, Smartt, S J, Leloudas, G, Huber, M E, Chambers, K, Malesani, D B, Hjorth, J, Gillanders, J H, Schultz, A, Sim, S A, Auchettl, K, Fynbo, J P U, Gall, C, McBrien, O R, Rest, A, Smith, K W, Wojtak, R & Young, D R 2020, ' The Lowest of the Low: Discovery of SN 2019gsc and the Nature of Faint Iax Supernovae ', The Astrophysical Journal Letters, vol. 892, no. 2 . https://doi.org/10.3847/2041-8213/ab76d5
Srivastav, S, Smartt, S J, Leloudas, G, Huber, M E, Chambers, K, Malesani, D B, Hjorth, J, Gillanders, J H, Schultz, A, Sim, S A, Auchettl, K, Fynbo, J P U, Gall, C, McBrien, O R, Rest, A, Smith, K W, Wojtak, R & Young, D R 2020, ' The Lowest of the Low: Discovery of SN 2019gsc and the Nature of Faint Iax Supernovae ', Astrophysical Journal Letters, vol. 892, no. 2, L24 . https://doi.org/10.3847/2041-8213/ab76d5
Srivastav, S, Smartt, S J, Leloudas, G, Huber, M E, Chambers, K, Malesani, D B, Hjorth, J, Gillanders, J H, Schultz, A, Sim, S A, Auchettl, K, Fynbo, J P U, Gall, C, McBrien, O R, Rest, A, Smith, K W, Wojtak, R & Young, D R 2020, ' The Lowest of the Low: Discovery of SN 2019gsc and the Nature of Faint Iax Supernovae ', The Astrophysical Journal Letters, vol. 892, no. 2 . https://doi.org/10.3847/2041-8213/ab76d5
We present the discovery and optical follow-up of the faintest supernova-like transient known. The event (SN 2019gsc) was discovered in a star-forming host at 53\,Mpc by ATLAS. A detailed multi-colour light curve was gathered with Pan-STARRS1 and fol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7992a9b9a1ebde7f6160e522516b2f4c
https://curis.ku.dk/portal/da/publications/the-lowest-of-the-low(570f4f88-7207-44b9-8322-62ca43acbbc2).html
https://curis.ku.dk/portal/da/publications/the-lowest-of-the-low(570f4f88-7207-44b9-8322-62ca43acbbc2).html
Autor:
K. W. Smith, Enrico Ramirez-Ruiz, S. J. Smartt, Q. Wang, P. K. Blanchard, Claudio Grillo, Z. Ansari, Tiara Hung, E. A. Magnier, Georgios Dimitriadis, Andrew Engel, Sofia Rest, Hugo Pfister, Armin Rest, R. J. Wainscoat, Charles D. Kilpatrick, Daniel Muthukrishna, N. Arendse, J. S. Brown, César Rojas-Bravo, Konstantin Malanchev, Katie Auchettl, Christa Gall, J. R. Fairlamb, D. Brethauer, Lindsay DeMarchi, D. A. Coulter, David O. Jones, S. H. Bruun, M. E. Huber, Adriano Agnello, Matthew R. Siebert, Ryan J. Foley, David Matthews, A. Sarangi, S. L. Schr der, C. R. Angus, Maria R. Drout, A. N. Kolborg, Deanne L. Coppejans, Heidi Korhonen, Sierra A. Dodd, Vivienne Baldassare, C. Hede, Candice Stauffer, M. C. Stroh, Kate D. Alexander, D. K. Ramanah, Y. C. Pan, T. J. L. de Boer, Jamie Law-Smith, Alexander Gagliano, Giacomo Terreran, Deep Chatterjee, S. Tinyanont, Kirsty Taggart, K. C. Chambers, Radosław Wojtak, A. Hajela, J. S. Bright, Wynn V. Jacobson-Galán, Gautham Narayan, C. C. Lin, Raffaella Margutti, P. Aleo, A. Baldeschi, Jens Hjorth, S. I. Raimundo, Brenna Mockler, Luca Izzo, K. D. French
Time domain science has undergone a revolution over the past decade, with tens of thousands of new supernovae (SNe) discovered each year. However, several observational domains, including SNe within days or hours of explosion and faint, red transient
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef68b7f54be9e802ed82d05d4f73c737
https://doi.org/10.48550/arxiv.2010.09724
https://doi.org/10.48550/arxiv.2010.09724
Publikováno v:
Arendse, N, Agnello, A & Wojtak, R J 2019, ' Low-redshift measurement of the sound horizon through gravitational time-delays ', Astronomy & Astrophysics, vol. 632, A91 . https://doi.org/10.1051/0004-6361/201935972
The matter sound horizon can be inferred from the cosmic microwave background within the Standard Model. Independent direct measurements of the sound horizon are then a probe of possible deviations from the Standard Model. We aim at measuring the sou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d765877895704b5c2ec97769b38228c
https://curis.ku.dk/portal/da/publications/lowredshift-measurement-of-the-sound-horizon-through-gravitational-timedelays(6342f621-fe72-4793-9466-3bc415198bdb).html
https://curis.ku.dk/portal/da/publications/lowredshift-measurement-of-the-sound-horizon-through-gravitational-timedelays(6342f621-fe72-4793-9466-3bc415198bdb).html