English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Probing the high-z IGM with the hyperfine transition of 3He+

MPS-Authors
/persons/resource/persons255642

Shivan,  Khullar
Computational Structure Formation, MPI for Astrophysics, Max Planck Society;

/persons/resource/persons209317

Busch,  Philipp
Computational Structure Formation, MPI for Astrophysics, Max Planck Society;

/persons/resource/persons18445

Ciardi,  Benedetta
Computational Structure Formation, MPI for Astrophysics, Max Planck Society;

/persons/resource/persons193011

Kakiichi,  Koki
Computational Structure Formation, MPI for Astrophysics, Max Planck Society;

External Ressource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Shivan, K., Ma, Q., Busch, P., Ciardi, B., Eide, M. B., & Kakiichi, K. (2020). Probing the high-z IGM with the hyperfine transition of 3He+. Monthly Notices of the Royal Astronomical Society, 497(1), 572-580. doi:10.1093/mnras/staa1951.


Cite as: http://hdl.handle.net/21.11116/0000-0007-A898-0
Abstract
The hyperfine transition of 3He+ at 3.5 cm has been thought as a probe of the high-z IGM, since it offers a unique insight into the evolution of the helium component of the gas, as well as potentially give an independent constraint on the 21 cm signal from neutral hydrogen. In this paper, we use radiative transfer simulations of reionization driven by sources such as stars, X-ray binaries, accreting black holes and shock heated interstellar medium, and simulations of a high-z quasar to characterize the signal and analyse its prospects of detection. We find that the peak of the signal lies in the range ∼1–50 μK for both environments, but while around the quasar it is always in emission, in the case of cosmic reionization a brief period of absorption is expected. As the evolution of He ii is determined by stars, we find that it is not possible to distinguish reionization histories driven by more energetic sources. On the other hand, while a bright QSO produces a signal in 21 cm that is very similar to the one from a large collection of galaxies, its signature in 3.5 cm is very peculiar and could be a powerful probe to identify the presence of the QSO. We analyse the prospects of the signal’s detectability using SKA1-mid as our reference telescope. We find that the noise power spectrum dominates over the power spectrum of the signal, although a modest signal-to-noise ratio can be obtained when the wavenumber bin width and the survey volume are sufficiently large.