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Keyphrases
X-ray
82%
Galaxies
71%
Swift
44%
Quasars
42%
Luminosity
39%
Gamma-ray Bursts
38%
Sloan Digital Sky Survey
35%
IceCube
31%
Active Galactic nuclei
31%
Light Curves
29%
Hubble Space Telescope
24%
Radio
22%
Afterglow
22%
Neutrinos
21%
Emission Lines
21%
Johannes Kepler
20%
Photometry
20%
Supernovae
19%
Radial Velocity
19%
High Energy
18%
X-ray Emission
18%
Fainting
17%
Observatory
17%
Pulsars
17%
Spectroscopic Surveys
16%
Oscillation
16%
Neutron Stars
16%
Metallicity
15%
Exoplanets
15%
Star Formation
15%
Host Galaxy
14%
Galactic
14%
High-redshift
13%
Dust
13%
X-ray Sources
13%
Power Law
13%
Baryons
12%
Low-mass
12%
Stellar Masses
12%
Spectral Energy Distribution
12%
Near-infrared
12%
XMM-Newton
12%
Multi-wavelength
11%
Shock
11%
Blazars
11%
Globular Clusters
11%
Luminosity Function
11%
Outburst
11%
Gamma Rays
11%
Supernova Remnants
11%
Galaxy Clusters
10%
Nebulae
10%
Brown Dwarfs
10%
Accretion Discs
10%
Star Formation Rate
10%
Deep Fields
10%
Orbital Period
9%
Halo
9%
High-resolution
9%
VERITAS
9%
Absorber
9%
Point Source
9%
X-ray Spectra
8%
Planetary Nebulae
8%
White Dwarfs
8%
Absorption Lines
8%
M Dwarfs
8%
Column Density
8%
Stellar Populations
8%
High Energy Neutrinos
8%
Ejecta
8%
Supermassive Black Holes (SMBHs)
8%
X-ray Telescopes
8%
Hobby-Eberly Telescope
8%
Synchrotron
7%
Soft X-ray
7%
Radial Velocity Estimation
7%
Line-of-sight
7%
Equivalent Length
7%
Spectrograph
7%
Cosmic Rays
7%
Star-forming Galaxies
7%
Hard X-ray
7%
X-ray Observations
6%
IceCube Neutrino Observatory
6%
Mid-infrared
6%
Star Forming Regions
6%
ROSAT
6%
Milky Way
6%
X-ray Binaries
6%
Lensing
6%
Habitable Zone
6%
Binary System
6%
Gravitational Waves
6%
Star-forming
6%
Planetary Systems
6%
Prompt Emission
6%
Neutrino Emission
6%
Kinematics
6%
Reverberation Mapping
6%
Physics
X Ray
100%
Quasar
55%
Sky Surveys
47%
Active Galactic Nuclei
44%
Light Curve
33%
Observatory
33%
Gamma-Ray Burst
31%
Radial-Velocity Method
31%
Afterglow
31%
Hubble Space Telescope
30%
Extrasolar Planet
28%
Photometry
28%
Gamma Radiation
26%
Star Formation
24%
Supernovae
23%
Metallicity
22%
Spectrographs
21%
Near Infrared
21%
High Resolution
20%
Neutron Stars
20%
X Ray Source
19%
Black Hole
18%
Gamma Ray Burst
17%
Stellar Mass
17%
Transients
17%
Spectral Energy Distribution
16%
Baryon
15%
Pulsar
15%
Atmospherics
14%
Blazars
13%
Circumstellar Disks
13%
Star Formation Rate
13%
Optical Bursts
12%
Stellar Populations
12%
Luminosity Function
12%
Nebula
12%
Gravitational Wave
11%
X Ray Spectra
11%
Brown Dwarf
10%
Muon
10%
Galaxy Clusters
10%
Magnetic Field
10%
Energetics
9%
White Dwarf
9%
Synchrotron
9%
X Ray Telescopes
9%
Supermassive Black Holes
9%
M Dwarf Stars
9%
Planetary Nebula
8%
Dark Matter
8%
Ejecta
8%
Power Spectra
8%
Line of Sight
8%
Physics
8%
Cosmic Microwave Background
8%
Pulsar
8%
X-Ray Observatories
8%
Galactic Evolution
7%
Star Forming Regions
7%
Habitable Zone
7%
Stellar Classification
7%
Extrasolar Gas Giants
7%
Milky Way
7%
Supernova Remnant
7%
Globular Cluster
7%
Spectrometer
7%
Black Holes
6%
Reverberation
6%
Redshift Surveys
6%
X Ray Binaries
6%
Hot Jupiters
6%
Polarimetry
6%
Proper Motion
6%
Optical Identification
6%
Kepler Mission
6%
Signal-to-Noise Ratio
5%
Planetary System
5%
Field of View
5%
Low-Mass Star
5%
Galaxy Evolution
5%
Tidal Disruption
5%
Type Ia Supernovae
5%
Globular Cluster
5%
Emission Line Galaxies
5%
Cross Correlation
5%
Planet Formation
5%
X-Ray Flares
5%
Baryon Acoustic Oscillations
5%
Magnetism
5%
Very Large Telescope
5%
Spectral Index
5%
Magnetars
5%
Massive Star
5%
Transients
5%
Broad-Absorption Line Quasar
5%
Compact Objects
5%