Physics & Astronomy
accretion disks
38%
active galactic nuclei
14%
astronomy
17%
astrophysics
7%
broadband
15%
calorimeters
19%
color
7%
continuums
10%
coronas
19%
cosmic rays
6%
counters
9%
Crab nebula
9%
cut-off
6%
dark matter
7%
detectors
23%
diodes
10%
emissivity
8%
energy
19%
energy bands
6%
galaxies
14%
gamma rays
13%
high resolution
7%
imaging spectrometers
5%
inclination
8%
International Space Station
16%
ionization
5%
iron
11%
K lines
14%
luminosity
31%
newton
13%
observatories
14%
orbits
7%
particle telescopes
18%
performance
7%
photons
12%
pulsars
6%
radii
13%
scintillation counters
12%
spectral resolution
7%
spectrometers
10%
spectroscopy
9%
spiral galaxies
28%
temperature
7%
time measurement
7%
universe
5%
x ray detectors
7%
x ray sources
12%
X Ray Timing Explorer
10%
x rays
100%
XMM-Newton telescope
18%
Earth & Environmental Sciences
accretion
54%
corona
25%
crab
9%
detection
5%
detector
9%
electron
5%
emissivity
10%
energetics
7%
energy
20%
erg
32%
gamma radiation
6%
index
6%
ionization
9%
iron
11%
luminosity
67%
observatory
6%
outburst
22%
plasma
5%
power law
30%
radio
7%
scattering
7%
soft energy
5%
spectral analysis
5%
spectrometer
12%
temperature
13%
tin
6%
transition
12%
Mathematics
Background
5%
Broadband
5%
Calibration
9%
Calorimeter
16%
CCD Camera
6%
Cosmic Rays
5%
Data Center
5%
Detector
9%
Energy
9%
Focal Plane
8%
Gamma Rays
10%
Hard X-ray
40%
High Energy
6%
High Resolution
11%
High Resolution Spectroscopy
7%
Imager
5%
Imaging Spectroscopy
5%
NASA
10%
Observatory
8%
Range of data
5%
Silicon
6%
Soft X-ray
12%
Spectral Resolution
8%
X-ray Astronomy
19%
X-ray Imaging
22%
X-ray Spectroscopy
26%