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