Zobrazeno 1 - 10
of 820
pro vyhledávání: '"Wojtak, A."'
There is a persistent $\sim 5 \sigma$ tension between the value of the Hubble constant, as derived from either the local distance ladder or the cosmic microwave background, signaling either unaccounted for systematics in the measurements or `new phys
Externí odkaz:
http://arxiv.org/abs/2411.05642
Autor:
Wojtak, Radosław, Hjorth, Jens
The most recent SH0ES measurement of the Hubble constant employs corrections of type Ia supernova magnitudes due to extinction in their host galaxies. These corrections are estimated using a probabilistic model which is trained on Hubble flow (z>0.03
Externí odkaz:
http://arxiv.org/abs/2403.10388
Autor:
Arendse, Nikki, Dhawan, Suhail, Carracedo, Ana Sagués, Peiris, Hiranya V., Goobar, Ariel, Wojtak, Radek, Alves, Catarina, Biswas, Rahul, Huber, Simon, Birrer, Simon, Collaboration, The LSST Dark Energy Science
Strongly-lensed supernovae are rare and valuable probes of cosmology and astrophysics. Upcoming wide-field time-domain surveys, such as the Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST), are expected to discover an order-of-magni
Externí odkaz:
http://arxiv.org/abs/2312.04621
Autor:
Sneppen, Albert, Watson, Darach, Poznanski, Dovi, Just, Oliver, Bauswein, Andreas, Wojtak, Radosław
Publikováno v:
A&A 678, A14 (2023)
While gravitational wave (GW) standard sirens from neutron star (NS) mergers have been proposed to offer good measurements of the Hubble constant, we show in this paper how a variation of the expanding photosphere method (EPM) or spectral-fitting exp
Externí odkaz:
http://arxiv.org/abs/2306.12468
Autor:
Domínguez, A., Kirkeberg, P. Østergaard, Wojtak, R., Saldana-Lopez, A., Desai, A., Primack, J. R., Finke, J., Ajello, M., Pérez-González, P. G., Paliya, V. S., Hartmann, D.
We present $\gamma$-ray optical-depth calculations from a recently published extragalactic background light (EBL) model built from multiwavelength galaxy data from the Hubble Space Telescope Cosmic Assembly Near-Infrared Deep Extragalactic Legacy Sur
Externí odkaz:
http://arxiv.org/abs/2306.09878
Publikováno v:
MNRAS, 525, 5187 (2023)
The currently used standardisation of type Ia supernovae results in Hubble residuals whose physical origin is unaccounted for. Here, we present a complete physical interpretation of the Hubble residuals based on a novel Bayesian hierarchical model of
Externí odkaz:
http://arxiv.org/abs/2302.01906
Autor:
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., Hjorth, J., Huber, M. E., Jacobson-Galán, W. V., Kilpatrick, C. D., Langeroodi, D., Mandel, K. S., Margutti, R., Matasić, F., McGill, P., Pierel, J. D. R., Ramirez-Ruiz, E., Ransome, C. L., Rojas-Bravo, C., Siebert, M. R., Smith, K. W., de Soto, K. M., Stroh, M. C., Tinyanont, S., Taggart, K., Ward, S. M., Wojtak, R., Auchettl, K., Blanchard, P. K., de Boer, T. J. L., Boyd, B. M., Carroll, C. M., Chambers, K. C., DeMarchi, L., Dimitriadis, G., Dodd, S. A., Earl, N., Farias, D., Gao, H., Gomez, S., Grayling, M., Grillo, C., Hayes, E. E., Hung, T., Izzo, L., Khetan, N., Law-Smith, J. A. P., LeBaron, N., Lin, C. -C., Luo, Y., Magnier, E. A., Matthews, D., O'Grady, A. J. G., Pan, Y. -C., Politsch, C. A., Raimundo, S. I., Rest, A., Ridden-Harper, R., Sarangi, A., Smartt, S. J., Terreran, G., Thorp, S., Vazquez, J., Wainscoat, R. J., Wang, Q., Wasserman, A. R., Yadavalli, S. K., Yarza, R., Zenati, Y.
We present the Young Supernova Experiment Data Release 1 (YSE DR1), comprised of processed multi-color Pan-STARRS1 (PS1) griz and Zwicky Transient Facility (ZTF) gr photometry of 1975 transients with host-galaxy associations, redshifts, spectroscopic
Externí odkaz:
http://arxiv.org/abs/2211.07128
Autor:
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., Engesser, M., Fox, O. D., Gall, C., Gomez, S., Goobar, A., Jimenez, C., Johansson, J., Li, G., Marques-Chaves, R., Mao, S., Mazzali, P. A., Perez-Fournon, I., Petrushevska, T., Poidevin, F., Rest, A., Sheu, W., Shirley, R., Silver, E., Storfer, C., Treu, T., Wojtak, R., Zenati, Y.
Supernovae (SNe) that have been multiply-imaged by gravitational lensing are rare and powerful probes for cosmology. Each detection is an opportunity to develop the critical tools and methodologies needed as the sample of lensed SNe increases by orde
Externí odkaz:
http://arxiv.org/abs/2211.03772
Autor:
Ward, Sam M., Thorp, Stephen, Mandel, Kaisey S., Dhawan, Suhail, Jones, David O., Taggart, Kirsty, Foley, Ryan J., Narayan, Gautham, Chambers, Kenneth C., Coulter, David A., Davis, Kyle W., de Boer, Thomas, de Soto, Kaylee, Earl, Nicholas, Gagliano, Alex, Gao, Hua, Hjorth, Jens, Huber, Mark E., Izzo, Luca, Langeroodi, Danial, Magnier, Eugene A., McGill, Peter, Rest, Armin, Rojas-Bravo, César, Wojtak, Radosław
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 the con
Externí odkaz:
http://arxiv.org/abs/2209.10558
Autor:
Angus, C. R., Baldassare, V. F., Mockler, B., Foley, R. J., Ramirez-Ruiz, E., Raimundo, S. I., 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., Tinyanont, S., Carroll, C. M., DeMarchi, L., Earl, N., Gagliano, A., Izzo, L., Villar, V. A., Zenati, Y., Arendse, N., Cold, C., de Boer, T. J. L., Chambers, K. C., Coulter, D. A., Khetan, N., Lin, C. C., Magnier, E. A., Rojas-Bravo, C., Wainscoat, R. J., Wojtak, R.
Massive black holes (BHs) at the centres of massive galaxies are ubiquitous. The population of BHs within dwarf galaxies, on the other hand, is evasive. Dwarf galaxies are thought to harbour BHs with proportionally small masses, including intermediat
Externí odkaz:
http://arxiv.org/abs/2209.00018