Zobrazeno 1 - 10
of 197
pro vyhledávání: '"Puchwein, E"'
Autor:
Acedo, E. de Lera, de Villiers, D. I. L., Razavi-Ghods, N., Handley, W., Fialkov, A., Magro, A., Anstey, D., Bevins, H. T. J., Chiello, R., Cumner, J., Josaitis, A. T., Roque, I. L. V., Sims, P. H., Scheutwinkel, K. H., Alexander, P., Bernardi, G., Carey, S., Cavillot, J., Croukamp, W., Ely, J. A., Gessey-Jones, T., Gueuning, Q., Hills, R., Kulkarni, G., Maiolino, R., Meerburg, P. D., Mittal, S., Pritchard, J. R., Puchwein, E., Saxena, A., Shen, E., Smirnov, O., Spinelli, M., Zarb-Adami, K.
Publikováno v:
Nature Astronomy 6, p 984 998, 2022
Observations of the 21-cm line from primordial hydrogen promise to be one of the best tools to study the early epochs of the Universe: the Dark Ages, the Cosmic Dawn, and the subsequent Epoch of Reionization. In 2018, the EDGES experiment caught the
Externí odkaz:
http://arxiv.org/abs/2210.07409
Autor:
Lamberts, A., Puchwein, E., Pfrommer, C., Chang, P., Shalaby, M., Broderick, A., Tiede, P., Rudie, G.
The intergalactic medium (IGM) acts like a calorimeter recording energy injection by cosmic structure formation, shocks and photoheating from stars and active galactic nuclei. It was recently proposed that spatially inhomogeneous TeV-blazars could si
Externí odkaz:
http://arxiv.org/abs/2201.13175
Autor:
Cumner, J., Acedo, E. De Lera, de Villiers, D. I. L., Anstey, D., Kolitsidas, C. I., Gurdon, B., Fagnoni, N., Alexander, P., Bernardi, G., Bevins, H. T. J., Carey, S., Cavillot, J., Chiello, R., Craeye, C., Croukamp, W., Ely, J. A., Fialkov, A., Gessey-Jones, T., Gueuning, Q., Handley, W., Hills, R., Josaitis, A. T., Kulkarni, G., Magro, A., Maiolino, R., Meerburg, P. D., Mittal, S., Pritchard, J. R., Puchwein, E., Razavi-Ghods, N., Roque, I. L. V., Saxena, A., Scheutwinkel, K. H., Shen, E., Sims, P. H., Smirnov, O., Spinelli, M., Zarb-Adami, K.
Following the reported detection of an absorption profile associated with the 21~cm sky-averaged signal from the Cosmic Dawn by the EDGES experiment in 2018, a number of experiments have been set up to verify this result. This paper discusses the des
Externí odkaz:
http://arxiv.org/abs/2109.10098
Publikováno v:
Physical Review D (2020, Vol. 102, No. 8)
Theories of gravity that incorporate new scalar degrees of freedom typically require screening mechanisms to ensure consistency with Solar System tests. One widely-studied mechanism -- the chameleon -- can lead to violations of the equivalence princi
Externí odkaz:
http://arxiv.org/abs/2002.05738
Autor:
Power, C., Elahi, P. J., Welker, C., Knebe, A., Pearce, F. R., Yepes, G., Dave, R., Kay, S. T., McCarthy, I. G., Puchwein, E., Borgani, S., Cunnama, D., Cui, W., Schaye, J.
Galaxy cluster outskirts mark the transition region from the mildly non-linear cosmic web to the highly non-linear, virialised, cluster interior. It is in this transition region that the intra-cluster medium (ICM) begins to influence the properties o
Externí odkaz:
http://arxiv.org/abs/1810.00534
Autor:
Viel, M., Haehnelt, M. G., Bolton, J. S., Kim, T. -S., Puchwein, E., Nasir, F., Wakker, B. P.
Publikováno v:
Mon Not R Astron Soc Lett (2017) 467 (1): L86-L90
We compare the low redshift (z ~ 0.1) Lyman-alpha forest from hydrodynamical simulations with data from the Cosmic Origin Spectrograph (COS). We find tension between the observed number of lines with b-parameters in the range 25-45 km/s and the predi
Externí odkaz:
http://arxiv.org/abs/1610.02046
The extragalactic gamma-ray sky at TeV energies is dominated by blazars, a subclass of accreting super-massive black holes with powerful relativistic outflows directed at us. Only constituting a small fraction of the total power output of black holes
Externí odkaz:
http://arxiv.org/abs/1308.6284
Autor:
Zhang, Y. -Y., Andernach, H., Caretta, C. A., Reiprich, T. H., Boehringer, H., Puchwein, E., Sijacki, D., Girardi, M.
We present relations between X-ray luminosity and velocity dispersion (L-sigma), X-ray luminosity and gas mass (L-Mgas), and cluster radius and velocity dispersion (r500-sigma) for 62 galaxy clusters in the HIFLUGCS, an X-ray flux-limited sample mini
Externí odkaz:
http://arxiv.org/abs/1011.3018
We investigate the impact of AGN feedback on the gravitational lensing properties of a sample of galaxy clusters with masses in the range 10^14 - 10^15 Msol, using state-of-the-art simulations. Adopting a ray-tracing algorithm, we compute the cross-s
Externí odkaz:
http://arxiv.org/abs/1001.2281
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