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Studying the effects of resonant photon injection in 21-cm observations. Code repository associated with the paper https://arxiv.org/abs/2009.03899.

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Edges and Endpoints in 21-cm Observations from Resonant Photon Production

Code repository for the papers Edges and Endpoints in 21-cm from Resonant Photon Production by Andrea Caputo, Hongwan Liu, Siddharth Mishra-Sharma, Maxim Pospelov, Joshua T. Ruderman, and Alfredo Urbano.

License: MIT Dark Photons Dark Matter arXiv

Photon spectra

Abstract

We introduce a novel class of signatures---spectral edges and endpoints---in 21-cm measurements resulting from interactions between the standard and dark sectors. Within the context of a kinetically mixed dark photon, we demonstrate how resonant dark photon-to-photon conversions can imprint distinctive spectral features in the observed 21-cm brightness temperature, with implications for current, upcoming, and proposed experiments targeting the cosmic dawn and the dark ages. These signatures open up a qualitatively new way to look for physics beyond the Standard Model using 21-cm observations.

Code

The dependencies of the code are listed in environments.yml. The code further relies on the following standalone codebases:

The notebooks folder contains Jupyter notebooks that reproduce the plots in paper.

Authors

  • Andrea Caputo; andrea dot caputo at uv dot es
  • Hongwan Liu; hongwanl at princeton dot edu
  • Siddharth Mishra-Sharma; sm8383 at nyu dot edu
  • Maxim Pospelov; pospelov at umn dot edu
  • Joshua T. Ruderman; ruderman at nyu dot edu
  • Alfredo Urbano; alfredo dot urbano at sissa dot it

Citation

If you use this code, please cite our papers:

If you use this code, please cite:

@misc{caputo2020edges,
    title={Edges and Endpoints in 21-cm Observations from Resonant Photon Production},
    author={Andrea Caputo and Hongwan Liu and Siddharth Mishra-Sharma and Maxim Pospelov and Joshua T. Ruderman and Alfredo Urbano},
    year={2020},
    eprint={2009.03899},
    archivePrefix={arXiv},
    primaryClass={astro-ph.CO}
}

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Studying the effects of resonant photon injection in 21-cm observations. Code repository associated with the paper https://arxiv.org/abs/2009.03899.

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