Publications by authors named "Vanessa A Moss"
Travel to academic conferences-where international flights are the norm-is responsible for a sizeable fraction of the greenhouse gas (GHG) emissions associated with academic work. In order to provide a benchmark for comparison with other fields, as well as for future reduction strategies and assessments, we estimate the CO-equivalent emissions for conference travel in the field of astronomy for the prepandemic year 2019. The GHG emission of the international astronomical community's 362 conferences and schools in 2019 amounted to 42,500 tCOe, assuming a radiative-forcing index factor of 1.
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- Fast Radio Bursts (FRBs) are powerful, brief astrophysical events that have been detected at various frequencies, but lower-frequency emissions have been challenging to observe.
- One notable FRB, FRB 20180916B, shows a 16.35-day periodicity and emits at frequencies as low as 120 megahertz, with its activity window varying by frequency — narrower and earlier at higher frequencies.
- The findings indicate that lower-frequency emissions can escape their surrounding medium, suggesting that some FRBs are in environments that don't absorb low-frequency signals, contradicting previous theories about absorption affecting FRB periodicity.