Statements (55)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:star
|
| gptkbp:associated_with |
gptkb:Cygnus_constellation
Gamma-ray bursts |
| gptkbp:contains_star |
gptkb:main-sequence_star
|
| gptkbp:discovered_by |
C. B. Cosmovici
|
| gptkbp:discovery_year |
gptkb:1971
|
| gptkbp:distance_from_earth |
approximately 7,000 light years
|
| gptkbp:file_system |
present
|
| gptkbp:first_noted_in |
1971 by the Uhuru satellite
|
| gptkbp:has_companion |
a star of spectral type B
|
| gptkbp:has_spectral_type |
O-type star
|
| gptkbp:has_xray_outbursts |
frequent
|
| gptkbp:has_xray_spectra |
characteristic of black holes
|
| https://www.w3.org/2000/01/rdf-schema#label |
Cygnus X-19
|
| gptkbp:is_a |
gptkb:medical_imaging
high-energy astrophysical object source of gravitational waves key object in modern astrophysics target for future observations |
| gptkbp:is_associated_with |
stellar evolution research
|
| gptkbp:is_considered |
a strong candidate for black hole studies
a key object in the study of accretion processes |
| gptkbp:is_known_for |
its variability in brightness
its role in understanding black hole physics |
| gptkbp:is_located_near |
the North Celestial Pole
|
| gptkbp:is_monitored_by |
ground-based observatories
NASA's missions |
| gptkbp:is_notable_for |
its X-ray flares
|
| gptkbp:is_noted_for |
its high-energy emissions
|
| gptkbp:is_observed_in |
gptkb:Chandra_X-ray_Observatory
X-ray astronomy the early 1970s |
| gptkbp:is_part_of |
gptkb:the_Milky_Way_galaxy
the study of high-energy astrophysics the study of cosmic phenomena the Cygnus constellation the catalog of X-ray sources the Cygnus X-ray region |
| gptkbp:is_studied_for |
its mass transfer dynamics
|
| gptkbp:is_studied_in |
multiple space telescopes
|
| gptkbp:is_used_in |
astrophysical modeling
|
| gptkbp:is_visible_from |
gptkb:Earth
|
| gptkbp:lighting |
high
variable greater than 10^38 watts |
| gptkbp:located_in |
constellation Cygnus
|
| gptkbp:mass |
greater than 10 solar masses
estimated between 10 and 20 solar masses |
| gptkbp:notable_feature |
strong X-ray emissions
|
| gptkbp:orbital_period |
approximately 5.6 days
|
| gptkbp:research |
available in multiple wavelengths
|
| gptkbp:research_importance |
important for studying black hole formation
|
| gptkbp:type |
gptkb:supermassive_black_hole
|
| gptkbp:bfsParent |
gptkb:Cygnus
|
| gptkbp:bfsLayer |
5
|