Carl Heiles1; Di Li2; Naomi McClureGriffiths5; Lei Qian2; Shu Liu2
Source Publication天文和天体物理学研究英文版
AbstractThe gases of the interstellar medium(ISM) possess orders of magnitude more mass than those of all the stars combined and are thus the prime component of the baryonic Universe. With L-band surface sensitivity even better than the planned phase one of the Square Kilometre Array(SKA1), the Five-hundredmeter Aperture Spherical radio Telescope(FAST) promises unprecedented insights into two of the primary components of ISM, namely, atomic hydrogen(HI) and the hydroxyl molecule(OH). Here, we discuss the evolving landscape of our understanding of ISM, particularly, its complex phases, the magnetic fields within, the so-called dark molecular gas(DMG), high velocity clouds and the connection between local and distant ISM. We lay out, in broad strokes, several expected FAST projects, including an all northern-sky high-resolution HI survey(22 000 deg2, 3′FWHM beam, 0.2 km s-1), targeted OH mapping, searching for absorption and maser signals, etc. Currently under commissioning, the commensal observing mode of FAST will be capable of simultaneously obtaining HI and pulsar data streams, making large-scale surveys in both science areas more efficient.
Funding Project[National Key R&D Program of China] ; [CAS International Partnership Program] ; [National Natural Science Foundation of China]
Document Type期刊论文
Affiliation1.Department of Astronomy,University of California,Berkeley,Berkeley,USA
3.Key Laboratory of FAST,National Astronomical Observatories,Chinese Academy of Sciences
5.Research School for Astronomy&Astrophysics,Australian National University,Canberra,Australia
Recommended Citation
GB/T 7714
Carl Heiles,Di Li,Naomi McClureGriffiths,et al. theinterstellarmediumthekeycomponentingalacticevolutionandmoderncosmology[J]. 天文和天体物理学研究英文版,2019,000(002):5.
APA Carl Heiles,Di Li,Naomi McClureGriffiths,Lei Qian,&Shu Liu.(2019).theinterstellarmediumthekeycomponentingalacticevolutionandmoderncosmology.天文和天体物理学研究英文版,000(002),5.
MLA Carl Heiles,et al."theinterstellarmediumthekeycomponentingalacticevolutionandmoderncosmology".天文和天体物理学研究英文版 000.002(2019):5.
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