Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Performance of Major Flare Watches from the Max Millennium Program
  (2001-2010)   The physical processes that trigger solar flares are not well understood and
significant debate remains around processes governing particle acceleration,
energy partition, and particle and energy transport. Observations at high
resolution in energy, time, and space are required in multiple energy ranges
over the whole course of many flares in order to build an understanding of
these processes. Obtaining high-quality, co-temporal data from ground- and
space- based instruments is crucial to achieving this goal and was the primary
motivation for starting the Max Millennium program and Major Flare Watch (MFW)
alerts, aimed at coordinating observations of all flares >X1 GOES X-ray
classification (including those partially occulted by the limb). We present a
review of the performance of MFWs from 1 February 2001 to 31 May 2010,
inclusive, that finds: (1) 220 MFWs were issued in 3,407 days considered (6.5%
duty cycle), with these occurring in 32 uninterrupted periods that typically
last 2-8 days; (2) 56% of flares >X1 were caught, occurring in 19% of MFW days;
(3) MFW periods ended at suitable times, but substantial gain could have been
achieved in percentage of flares caught if periods had started 24 h earlier;
(4) MFWs successfully forecast X-class flares with a true skill statistic (TSS)
verification metric score of 0.500, that is comparable to a categorical
flare/no-flare interpretation of the NOAA Space Weather Prediction Centre
probabilistic forecasts (TSS = 0.488).

10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an