3D AMR hydrosimulations of a compact-source scenario for the Galactic Centre cloud G2
3D AMR hydrosimulations of a compact-source scenario for the Galactic Centre cloud G2
复制标题
银河中心云 G2 的紧凑源场景的 3D AMR 水文模拟
DOI:
10.1093/mnras/sty1408
复制
发表时间:
2018
影响因子:
4.8
通讯作者:
George
中科院分区:
文献类型:
--
作者:
Ballone;Schartmann;Burkert;Gillessen;Genzel;Eisenhauer;Habibi;George
The nature of the gaseous and dusty cloud G2 in the Galactic Centre is still under debate. We present three-dimensional hydrodynamical adaptive mesh refinement simulations of G2, modelled as an outflow from a ‘compact source’ moving on the observed orbit. The construction of mock position-velocity (PV) diagrams enables a direct comparison with observations and allows us to conclude that the observational properties of the gaseous component of G2 could be matched by a massive () and slow (50 km s−1) outflow, as observed for T Tauri stars. In order for this to be true, only the material at larger (>100 AU) distances from the source must be actually emitting; otherwise G2 would appear too compact compared to the observed PV diagrams. On the other hand, the presence of a central dusty source might be able to explain the compactness of G2’s dust component. In the present scenario, 5–10 years after pericentre the compact source should decouple from the previously ejected material, due to the hydrodynamic interaction of the latter with the surrounding hot and dense atmosphere. In this case, a new outflow should form, ahead of the previous one, which would be the smoking gun evidence for an outflow scenario.
登录
查看更多内容
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
H. Guenther;S. Matt;Z.
通讯作者:
Z.
DOI:
10.1088/0004-637x/750/1/58
发表时间:
2012-01
期刊:
The Astrophysical Journal
影响因子:
--
作者:
A. Burkert;M. Schartmann;C. Alig;S. Gillessen;R. Genzel;T. Fritz;F. Eisenhauer
通讯作者:
A. Burkert;M. Schartmann;C. Alig;S. Gillessen;R. Genzel;T. Fritz;F. Eisenhauer
DOI:
10.1051/0004-6361/201730532
发表时间:
2017
期刊:
arXiv: Astrophysics of Galaxies
影响因子:
--
作者:
M. Zajavcek;S. Britzen;A. Eckart;B. Shahzamanian;G. Busch;V. Karas;M. Parsa;F. Peißker;M. Dovvciak;M. Subroweit;F. Dinnbier;A. Zensus
通讯作者:
A. Zensus
DOI:
--
发表时间:
1984
期刊:
影响因子:
--
作者:
M. Torbett
通讯作者:
M. Torbett
DOI:
10.1088/0004-637x/768/2/108
发表时间:
2013
期刊:
The Astrophysical Journal
影响因子:
--
作者:
N. Scoville;Andi Burkert
通讯作者:
Andi Burkert