Bookmark Saya

arXiv Open Access 2024

North Polar Spur: gaseous plume(s) from star-forming regions at $\sim$3-5 kpc from Galactic Center?

E. Churazov I. Khabibullin A. M. Bykov N. N. Chugai R. A. Sunyaev +2 lainnya
Lihat Sumber

Abstrak

We argue that the North Polar Spur (NPS) and many less prominent structures are formed by gaseous metal-rich plumes associated with star-forming regions (SFRs). The SFRs located at the tangent to the 3-5~kpc rings might be particularly relevant to NPS. A multi-temperature mixture of gaseous components and cosmic rays rises above the Galactic disk under the action of their initial momentum and buoyancy. Eventually, the plume velocity becomes equal to that of the ambient gas, which rotates with different angular speed than the stars in the disk. As a result, the plumes acquire characteristic bent shapes. An ad hoc model of plumes' trajectories shows an interesting resemblance to the morphology of structures seen in the radio continuum and X-rays.

Topik & Kata Kunci

astro-ph.HE astro-ph.GA

Penulis (7)

E

E. Churazov

I

I. Khabibullin

A

A. M. Bykov

N

N. N. Chugai

R

R. A. Sunyaev

V

V. P. Utrobin

I

I. I. Zinchenko

Format Sitasi

APA MLA BibTeX
Churazov, E., Khabibullin, I., Bykov, A.M., Chugai, N.N., Sunyaev, R.A., Utrobin, V.P. et al. (2024). North Polar Spur: gaseous plume(s) from star-forming regions at $\sim$3-5 kpc from Galactic Center?. https://arxiv.org/abs/2408.00752

Akses Cepat

Lihat di Sumber
Informasi Jurnal
Tahun Terbit
2024
Bahasa
en
Sumber Database
arXiv
Akses
Open Access ✓