Statements (102)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:medical_imaging
gptkb:star |
| gptkbp:accretion_disk_presence |
yes
|
| gptkbp:accretion_mechanisms |
various accretion mechanisms proposed
|
| gptkbp:accretion_rate |
varies
high accretion rate |
| gptkbp:analysis |
gptkb:complex
|
| gptkbp:associated_with |
gptkb:supernova_remnants
|
| gptkbp:black_hole_presence |
not confirmed
|
| gptkbp:collaboration |
international research teams
international collaboration in research |
| gptkbp:collaborations |
encouraged
|
| gptkbp:collection |
ongoing
|
| gptkbp:components |
two stars
|
| gptkbp:contains_star |
B-type star
|
| gptkbp:contributes_to |
stellar evolution processes
knowledge of neutron stars |
| gptkbp:coordinates |
in the Milky Way galaxy
|
| gptkbp:discovered_by |
gptkb:NASA
C. B. Markwardt |
| gptkbp:discovery |
new phenomena
|
| gptkbp:discovery_year |
gptkb:1971
|
| gptkbp:distance_from_earth |
approximately 10,000 light-years
approximately 10,000 light years |
| gptkbp:educational_value |
high
|
| gptkbp:file_system |
present
|
| gptkbp:financial_stability |
binary dynamics
complex dynamics due to mass transfer |
| gptkbp:first_xray_source |
identified in the Centaurus constellation
|
| gptkbp:future_prospects |
planned
future research opportunities exist |
| gptkbp:has_field |
strong magnetic field
|
| gptkbp:has_luminosity |
observed
about 1000 times that of the Sun evolutionary processes studied interactions between stars studied |
| gptkbp:has_spectral_type |
O-type star
|
| gptkbp:historical_significance |
first X-ray binary discovered
|
| https://www.w3.org/2000/01/rdf-schema#label |
Centaurus X-9
|
| gptkbp:impact |
gptkb:significant
|
| gptkbp:influenced_by |
surrounding interstellar medium
|
| gptkbp:is_observed_in |
gptkb:Chandra_X-ray_Observatory
gptkb:XMM-Newton gptkb:Hubble_Space_Telescope ROSAT |
| gptkbp:lighting |
yes
observed strong high-energy X-rays variable light curve about 10^38 watts significant X-ray variability observed |
| gptkbp:located_in |
gptkb:Centaurus_constellation
|
| gptkbp:mass |
approximately 1.4 solar masses
mass loss from the system |
| gptkbp:mass_of_primary |
approximately 1.4 solar masses
|
| gptkbp:mass_of_secondary |
approximately 0.5 solar masses
|
| gptkbp:max_speed |
from companion star
|
| gptkbp:migration |
occurs from secondary to primary
|
| gptkbp:model |
theoretical models developed for understanding
developed based on observations |
| gptkbp:next_event |
anticipated.
|
| gptkbp:notable_feature |
strong X-ray flares
|
| gptkbp:orbital_period |
about 0.7 days
|
| gptkbp:originated_in |
mass transfer phase
|
| gptkbp:part_of |
Galactic X-ray binary population
|
| gptkbp:part_of_research |
stellar astrophysics
|
| gptkbp:power_source |
high
|
| gptkbp:primary_star_type |
gptkb:Supernova
|
| gptkbp:public_interest |
notable
|
| gptkbp:publications |
numerous scientific publications exist
|
| gptkbp:redshift |
0.0015
|
| gptkbp:related_to |
other X-ray binaries
|
| gptkbp:research |
present
ongoing extensive observational data available collected in multiple wavelengths various observational techniques applied used in its study |
| gptkbp:research_focus |
stellar mass black holes
|
| gptkbp:research_importance |
important for studying binary systems
|
| gptkbp:research_interest |
high
high scientific interest |
| gptkbp:secondary_star_type |
gptkb:main-sequence_star
|
| gptkbp:sensor |
gptkb:1971
|
| gptkbp:significance |
important for studying stellar evolution
|
| gptkbp:stellar_mass_transfer |
stellar mass transfer processes studied
|
| gptkbp:system |
less than 10 million years
similar to other X-ray binaries |
| gptkbp:travel_time |
light travel time from Earth is significant
|
| gptkbp:type |
gptkb:medical_imaging
gptkb:star |
| gptkbp:variable_star_type |
gptkb:medical_imaging
|
| gptkbp:x-ray_astronomy |
important for X-ray astronomy research
|
| gptkbp:x-ray_binaries |
part of the X-ray binary class
|
| gptkbp:x-ray_emission_mechanisms |
different emission mechanisms proposed
|
| gptkbp:x-ray_outbursts |
frequent outbursts observed
|
| gptkbp:x-ray_pulsations |
not detected
|
| gptkbp:x-ray_spectra |
hard X-ray spectra
|
| gptkbp:x-ray_spectroscopy |
used for studying composition
|
| gptkbp:xray_binaries |
important for understanding black hole formation
|
| gptkbp:xray_spectra |
analyzed
|