Abstract
The next generation of wide-field cosmic microwave background (CMB) surveys are uniquely poised to open a new window into time-domain astronomy in the millimeter band. Here, we explore the discovery phase space for extragalactic transients with near-term and future CMB experiments to characterize the expected population. We use existing millimeter-band light curves of known transients (gamma-ray bursts, tidal disruption events, fast blue optical transients (FBOTs), neutron star mergers) and theoretical models, in conjunction with known and estimated volumetric rates. Using Monte Carlo simulations of various CMB survey designs (area, cadence, depth, duration) we estimate the detection rates and the resulting light-curve characteristics. We find that existing and near-term surveys will find tens to hundreds of long-duration gamma-ray bursts (LGRBs), driven primarily by detections of the reverse shock emission, and including off-axis LGRBs. Next-generation experiments (CMB-S4, CMB-HD) will find tens of FBOTs in the nearby universe and will detect a few tidal disruption events. CMB-HD will additionally detect a small number of short gamma-ray bursts, where these will be discovered within the detection volume of next-generation gravitational wave experiments like the Cosmic Explorer.
Original language | English |
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Article number | 16 |
Journal | Astrophysical Journal |
Volume | 935 |
Issue number | 1 |
Early online date | 9 Aug 2022 |
DOIs | |
Publication status | Published - 31 Aug 2022 |
Bibliographical note
Funding Information:We thank the referee for their helpful comments. We thank Sam Guns and Sigurd Naess for helpful discussions regarding the point-source sensitivity of SPT-3G, ACT, and SO. K.D.A. acknowledges support from NASA through NASA Hubble Fellowship grant No. HST-HF2-51403.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS5-26555.
Funding Information:
We thank the referee for their helpful comments. We thank Sam Guns and Sigurd Naess for helpful discussions regarding the point-source sensitivity of SPT-3G, ACT, and SO. K.D.A. acknowledges support from NASA through NASA Hubble Fellowship grant No. HST-HF2-51403.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS5-26555.
Funding
This work was funded by the Special project of academic restoration and scientific research of Shanxi Agricultural University (2020xshf40), the National Key R & D programs (2018YFD0100301), and the Doctoral research project of Shanxi Agricultural University (2020BQ46). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. The following grant information was disclosed by the authors: Special Project of Academic Restoration and Scientific Research of Shanxi Agricultural University: 2020xshf40. National key R & D programs: 2018YFD0100301. Doctoral Research Project of Shanxi Agricultural University: 2020BQ46.
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science