POEMMA’s target-of-opportunity sensitivity to cosmic neutrino transient sources

Probing UHECR production in Centaurus A using secondary neutrinos and gamma-rays

“…Figure 4 shows the flux of secondary neutrinos from Cen A for all astrophysics scenarios considered here. The sensitivity of the futures observatories GRAND [56], POEMMA [20] and IceCube_2Gen [21] are also shown. The effect of the injection composition is clearly seen.…”

“…Shock waves in the backflow of the jets have been measured in Cen A [38,39] in which particle acceleration is expected to occur. The energy spectrum can be written as [20] and GRAND [22], IceCube_2Gen [21] are shown a power law combined with a charge dependent exponential cutoff [40] that accounts for the limitation in the maximal energy that a source can accelerate particles…”

“…The 90% upper limits on the neutrino flux measured by the Pierre Auger Observatory and by the IceCube are also shown for comparison. The prediction of sensitivity of future experiments ARA [18], ARIANNA [19], POEMMA [20], IceCube_Gen2 [21] and GRAND [22] are also shown. Note that the sensitivity of the future experiments are not corrected to the sensitivity in the direction of Cen A.…”

EAS Optical Cherenkov signatures of tau neutrinos for space and suborbital detectors

“…Both telescopes will require external (GCN) alerts for short and long neutrino bursts. With five years of viewing, POEMMA has greater potential for transient observations from tidal disruption events, binary black hole mergers and binary neutron star mergers [5]. EUSO-SPB2 will be a pathfinder instrument.…”

“…Stereo mode has the advantage of a lower photon number density threshold, most important at lower energies, while the dual mode increases the observing area by a factor of 2. Telescopes can slew over time frames of order 500 s [5]. sensitivities are compared in the following section.…”