Publications by authors named "Alexandre Toubiana"
Article Synopsis
- The LISA mission's science objectives were initially based on the assumption of 4 years of continuous data collection, but the expected duty cycle now suggests usable data will only be available for 3 years.
- A study by the LISA Science Group examines how extending the mission duration could enhance scientific outcomes, particularly regarding the search for seed black holes from the early universe and the investigation of stellar-origin black holes through various observational methods.
- The conclusion recommends extending the mission to 6 years to significantly improve the quality and quantity of scientific data collected.
GW190521 is the compact binary with the largest masses observed to date, with at least one black hole in the pair-instability gap. This event has also been claimed to be associated with an optical flare observed by the Zwicky Transient Facility in an active galactic nucleus (AGN), possibly due to the postmerger motion of the merger remnant in the AGN gaseous disk. The Laser Interferometer Space Antenna (LISA) may detect up to ten such gas-rich black-hole binaries months to years before their detection by Laser Interferometer Gravitational Wave Observatory or Virgo-like interferometers, localizing them in the sky within ≈1°^{2}.
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