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Akademický článek
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Akademický článek
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We initiate the study of the following general clustering problem. We seek to partition a given set $P$ of data points into $k$ clusters by finding a set $X$ of $k$ centers and assigning each data point to one of the centers. The cost of a cluster, r
Externí odkaz:
http://arxiv.org/abs/2410.24104
Autor:
Yeung, Michael C. H., Ponti, Gabriele, Freyberg, Michael J., Dennerl, Konrad, Liu, Teng, Locatelli, Nicola, Mayer, Martin G. F., Sanders, Jeremy S., Sasaki, Manami, Strong, Andy, Zhang, Yi, Zheng, Xueying, Gatuzz, Efrain
Publikováno v:
A&A (2024), 690, A399
The SRG/eROSITA All-Sky Surveys (eRASSs) combine the advantages of complete sky coverage and the energy resolution provided by the charge couple device and offer the most holistic and detailed view of the diffuse soft X-ray background (SXRB) to date.
Externí odkaz:
http://arxiv.org/abs/2410.23345
The stellar stripping of satellites in cluster haloes is understood to play an important role in the production of intracluster light. Increasingly, cosmological simulations have been utilised to investigate its origin and assembly. However, such sim
Externí odkaz:
http://arxiv.org/abs/2410.19292
Autor:
Nowak, Katarzyna, Krause, Martin G. H., Siegert, Thomas, Forbrich, Jan, Yates, Robert M., Ramírez-Galeano, Laura, Charbonnel, Corinne, Gieles, Mark
Self-enrichment is one of the leading explanations for chemical anomalies in globular clusters. In this scenario, various candidate polluter stars have been proposed to eject gas with altered chemical composition during the self-enrichment process. M
Externí odkaz:
http://arxiv.org/abs/2409.16362
Autor:
Asthana, Shikhar, Haehnelt, Martin G., Kulkarni, Girish, Bolton, James S., Gaikwad, Prakash, Keating, Laura C., Puchwein, Ewald
The relative contribution of emission from stellar sources and accretion onto supermassive black holes to reionization has been brought into focus again by the apparent high abundance of faint AGN at $4\lesssim z\lesssim11$ uncovered by JWST. We inve
Externí odkaz:
http://arxiv.org/abs/2409.15453
Autor:
Jiang, Danyang, Onoue, Masafusa, Jiang, Linhua, Lai, Samuel, Banados, Eduardo, Becker, George D., Bischetti, Manuela, Bosman, Sarah E. I., Davies, Rebecca L., DOdorico, Valentina, Farina, Emanuele Paolo, Haehnelt, Martin G., Mazzucchelli, Chiara, Schindler, Jan-Torge, Walter, Fabian, Zhu, Yongda
The Fe II/Mg II emission line flux ratio in quasar spectra serves as a proxy for the relative Fe to alpha-element abundances in the broad line regions of quasars. Due to the expected different enrichment timescales of the two elements, they can be us
Externí odkaz:
http://arxiv.org/abs/2409.06174