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saprEMo: a simplified algorithm for predicting detections of electromagnetic transients in surveys

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Vinciguerra,  Serena
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Citation

Vinciguerra, S., Branchesi, M., Ciolfi, R., Mandel, I., Neijssel, C., & Stratta, G. (2019). saprEMo: a simplified algorithm for predicting detections of electromagnetic transients in surveys. Monthly Notices of the Royal Astronomical Society, 484(1), 332-344. doi:10.1093/mnras/sty3490.


Cite as: https://hdl.handle.net/21.11116/0000-0002-EE2C-2
Abstract
The multi-wavelength detection of GW170817 has inaugurated multi-messenger
astronomy. The next step consists in interpreting observations coming from
population of gravitational wave sources. We introduce saprEMo, a tool aimed at
predicting the number of electromagnetic signals characterised by a specific
light curve and spectrum, expected in a particular sky survey. By looking at
past surveys, saprEMo allows us to constrain models of electromagnetic emission
or event rates. Applying saprEMo to proposed astronomical missions/observing
campaigns provides a perspective on their scientific impact and tests the
effect of adopting different observational strategies. For our first case
study, we adopt a model of spindown-powered X-ray emission predicted for a
binary neutron star merger producing a long-lived neutron star. We apply
saprEMo on data collected by XMM-Newton and Chandra and during $10^4$ s of
observations with the mission concept THESEUS. We demonstrate that our emission
model and binary neutron star merger rate imply the presence of some signals in
the XMM-Newton catalogs. We also show that the new class of X-ray transients
found by Bauer et al. in the Chandra Deep Field-South is marginally consistent
with the expected rate. Finally, by studying the mission concept THESEUS, we
demonstrate the substantial impact of a much larger field of view in searches
of X-ray transients.