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Galactic Center Region in X-rays from Chandra

Galactic Center Region in X-rays from Chandra
X-rays detected by the Chandra X-ray Observatory expose a wealth of exotic objects and high-energy features. In this image, pink represents lower energy X-rays and blue indicates higher energy. Hundreds of small dots show emission from material around black holes and other dense stellar objects. A supermassive black hole – some four million times more massive than the Sun – resides within the bright region in the lower right. The diffuse X-ray light comes from gas heated to millions of degrees by outflows from the supermassive black hole, winds from giant stars, and stellar explosions. This central region is the most energetic place in our galaxy.

About the Object

  • R.A. Position
    R.A. PositionRight ascension – analogous to longitude – is one component of an object's position.
    17h 45m 36.0s
  • Dec. Position
    Dec. PositionDeclination – analogous to latitude – is one component of an object's position.
    -28° 55' 58.8"
  • Constellation
    ConstellationOne of 88 recognized regions of the celestial sphere in which the object appears.
    Sagittarius
  • Distance
    DistanceThe physical distance from Earth to the astronomical object. Distances within our solar system are usually measured in Astronomical Units (AU). Distances between stars are usually measured in light-years. Interstellar distances can also be measured in parsecs.
    26,000 light-years (8 kiloparsecs)
  • Dimensions
    DimensionsThe physical size of the object or the apparent angle it subtends on the sky.
    The image of the galactic center is 32.5 arcminutes (246 light-years or 75.5 parsecs) wide.

About the Data

  • Data Description
    Data DescriptionProposal: A description of the observations, their scientific justification, and the links to the data available in the science archive.
    Science Team: The astronomers who planned the observations and analyzed the data. "PI" refers to the Principal Investigator.
    The science team was led by Q.D. Wang (University of Massachusetts, Amherst). Image courtesy of NASA/CXC/UMass/Q.D. Wang et al.
  • Instrument
    InstrumentThe science instrument used to produce the data.
    CXO>ACIS
  • Exposure Dates
    Exposure DatesThe date(s) that the telescope made its observations and the total exposure time.
    March 2000 - July 2007
  • Filters
    FiltersThe camera filters that were used in the science observations.
    1-3 keV, 3-5 keV, 5-8 keV
  • Object Name
    Object NameA name or catalog number that astronomers use to identify an astronomical object.
    Galactic Center
  • Object Description
    Object DescriptionThe type of astronomical object.
    Center of the Milky Way Galaxy
  • Release Date
    November 10, 2009
  • Science Release
    NASA’s Great Observatories Celebrate International Year of Astronomy
  • Credit
    NASA, CXC, Q.D. Wang (University of Massachusetts, Amherst), and STScI

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Details

Last Updated
Mar 28, 2025
Contact
Media

Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
claire.andreoli@nasa.gov