Zobrazeno 1 - 10
of 216
pro vyhledávání: '"Yuan, Z. S."'
Clusters of galaxies are merging during the formation of large-scale structures in the Universe. Based on optical survey data, we identify a large sample of pre-mergers of galaxy clusters and merging subclusters in rich clusters. We find 39,382 partn
Externí odkaz:
http://arxiv.org/abs/2406.00652
During cluster mergers, the intracluster gas and member galaxies undergo dynamic evolution, but at different timescales and reach different states. We collect 24 galaxy clusters in quasi-equilibrium state as indicated by the X-ray image, and calculat
Externí odkaz:
http://arxiv.org/abs/2305.05250
A 5$^{\circ}$ $\times$ 7$^{\circ}$ sky area containing two large radio structures of G203.1+6.6 and G206.7+5.9 with a size of about 2.5$^{\circ}$ and 3.5$^{\circ}$ respectively is scanned by using the L-band 19-beam receiver of the Five-hundred-meter
Externí odkaz:
http://arxiv.org/abs/2211.11408
Autor:
Yuan, Z. S., Wen, Z. L.
The alignment between brightest cluster galaxies (BCGs) and host clusters can reveal the mystery of formation and evolution for galaxy clusters. We measure cluster orientations in optical based on the projected distribution of member galaxies and in
Externí odkaz:
http://arxiv.org/abs/2209.00204
X-ray images of galaxy clusters often show disturbed structures that are indication of cluster mergers. As a complementary to our previous work on dynamical state of 964 clusters observed by the Chandra, we process the X-ray images for 1308 clusters
Externí odkaz:
http://arxiv.org/abs/2204.02699
Autor:
Yuan, Z. S., Han, J. L.
The dynamical state of galaxy clusters describes if clusters are relaxed dynamically or in a merging process of subclusters. By using archival images from the Chandra X-ray Observatory, we derive a set of parameters to describe the dynamical state fo
Externí odkaz:
http://arxiv.org/abs/2008.01299
Akademický článek
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By cross-matching the currently largest optical catalog of galaxy clusters and the NVSS radio survey database, we obtain the largest complete sample of brightest cluster galaxies (BCGs) in the redshift range of 0.05
Externí odkaz:
http://arxiv.org/abs/1605.03387
Publikováno v:
ApJ 813, 77 (2015)
Diffuse radio emission in galaxy clusters is known to be related to cluster mass and cluster dynamical state. We collect the observed fluxes of radio halos, relics, and mini-halos for a sample of galaxy clusters from the literature, and calculate the
Externí odkaz:
http://arxiv.org/abs/1510.04980
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Aug2024, Vol. 532 Issue 2, p1849-1886, 38p
