Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: TESS observations of flares and quasi-periodic pulsations from low mass
  stars and potential impact on exoplanets   We have performed a search for flares and Quasi-Periodic Pulsations (QPPs)
from low mass M dwarf stars using TESS 2 min cadence data. We find seven stars
which show evidence of QPPs. Using Fourier and Empirical Mode Decomposition
techniques, we confirm the presence of 11 QPPs in these seven stars with a
period between 10.2 and 71.9 min, including an oscillation with strong drift in
the period and a double-mode oscillation. The fraction of flares we examined
which showed QPPs (7 percent) is higher than other studies of stellar flares,
but is very similar to the fraction of Solar C-class flares. Based on the
stellar parameters taken from the TESS Input Catalog, we determine the lengths
and magnetic field strengths of the flare coronal loops using the period of the
QPPs and various assumptions about the origin of the QPPs. We also use a
scaling relationship based on flares from Solar and Solar-type stars and the
observed energy, plus the duration of the flares, finding that the different
approaches predict loop lengths which are consistent to a factor of $\sim$2. We
also discuss the flare frequency of the seven stars determining whether this
could result in ozone depletion or abiogenesis. Three of our stars have a
sufficiently high rate of energetic flares which are likely to cause
abiogenesis. However, two of them are also in the range where ozone depletion
is likely to occur. We speculate on the implications for surface life on these
stars and the effects of the loop lengths and QPPs on potential exoplanets in
the habitable zone.

11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an