Discovering Supernovae at Epoch of Reionization with Nancy Grace Roman Space Telescope. Moriya, T. J., Quimby, R. M., & Robertson, B. E. Technical Report August, 2021. Publication Title: arXiv e-prints ADS Bibcode: 2021arXiv210801801M Type: article
Discovering Supernovae at Epoch of Reionization with Nancy Grace Roman Space Telescope [link]Paper  abstract   bibtex   
Massive stars play critical roles for the reionization of the Universe. Individual massive stars at the reionization epoch (z \textgreater 6) are too faint to observe and quantify their contributions to reionization. Some massive stars, however, explode as superluminous supernovae (SLSNe) or pair-instability supernovae (PISNe) that are luminous enough to observe even at z \textgreater 6 and allow for the direct characterization of massive star properties at the reionization epoch. In addition, hypothetical long-sought-after PISNe are expected to be present preferentially at high redshifts, and their discovery will have a tremendous impact on our understanding of massive star evolution and the formation of stellar mass black holes. The near-infrared Wide Field Instrument on Nancy Grace Roman Space Telescope will excel at discovering such rare high-redshift supernovae. In this work, we investigate the best survey strategy to discover and identify SLSNe and PISNe at z \textgreater 6 with Roman. We show that the combination of the F158 and F213 filters can clearly separate both SLSNe and PISNe at z \textgreater 6 from nearby supernovae through their colors and magnitudes. The limiting magnitudes are required to be 27.0 mag and 26.5 mag in the F158 and F213 filters, respectively, to identify supernovae at z \textgreater 6. If we conduct a 10 deg2 transient survey with these limiting magnitudes for 5 years with a cadence of one year, we expect to discover 22.5 +- 2.8 PISNe and 3.1 +- 0.3 SLSNe at z \textgreater 6, depending on the cosmic star-formation history. The same survey is estimated to discover 76.1 +- 8.2 PISNe and 9.1 +- 0.9 SLSNe at 5 \textless z \textless 6. Such a supernova survey requires the total observational time of approximately 525 hours in 5 years. The legacy data acquired with the survey will also be beneficial for many different science cases including the study of high-redshift galaxies.
@techreport{2021arXiv210801801M,
	title = {Discovering {Supernovae} at {Epoch} of {Reionization} with {Nancy} {Grace} {Roman} {Space} {Telescope}},
	url = {https://ui.adsabs.harvard.edu/abs/2021arXiv210801801M},
	abstract = {Massive stars play critical roles for the reionization of the Universe. Individual massive stars at the reionization epoch (z {\textgreater} 6) are too faint to observe and quantify their contributions to reionization. Some massive stars, however, explode as superluminous supernovae (SLSNe) or pair-instability supernovae (PISNe) that are luminous enough to observe even at z {\textgreater} 6 and allow for the direct characterization of massive star properties at the reionization epoch. In addition, hypothetical long-sought-after PISNe are expected to be present preferentially at high redshifts, and their discovery will have a tremendous impact on our understanding of massive star evolution and the formation of stellar mass black holes. The near-infrared Wide Field Instrument on Nancy Grace Roman Space Telescope will excel at discovering such rare high-redshift supernovae. In this work, we investigate the best survey strategy to discover and identify SLSNe and PISNe at z {\textgreater} 6 with Roman. We show that the combination of the F158 and F213 filters can clearly separate both SLSNe and PISNe at z {\textgreater} 6 from nearby supernovae through their colors and magnitudes. The limiting magnitudes are required to be 27.0 mag and 26.5 mag in the F158 and F213 filters, respectively, to identify supernovae at z {\textgreater} 6. If we conduct a 10 deg2 transient survey with these limiting magnitudes for 5 years with a cadence of one year, we expect to discover 22.5 +- 2.8 PISNe and 3.1 +- 0.3 SLSNe at z {\textgreater} 6, depending on the cosmic star-formation history. The same survey is estimated to discover 76.1 +- 8.2 PISNe and 9.1 +- 0.9 SLSNe at 5 {\textless} z {\textless} 6. Such a supernova survey requires the total observational time of approximately 525 hours in 5 years. The legacy data acquired with the survey will also be beneficial for many different science cases including the study of high-redshift galaxies.},
	urldate = {2021-09-07},
	author = {Moriya, Takashi J. and Quimby, Robert M. and Robertson, Brant E.},
	month = aug,
	year = {2021},
	note = {Publication Title: arXiv e-prints
ADS Bibcode: 2021arXiv210801801M
Type: article},
	keywords = {Astrophysics - Astrophysics of Galaxies, Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Solar and Stellar Astrophysics},
}

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