Astronomical X-ray sources

Sirius is the brightest star in the night sky, located in the southern constellation of Canis Major. Its name is derived from the Greek word (Latin script: ; ). The star is designated  Canis Majoris, Latinized to Alpha Canis Majoris, and abbreviated  CMa or Alpha CMa. With a visual apparent magnitude of −1.46, Sirius is almost twice as bright as Canopus, the next brightest star. Sirius is a binary star consisting of a main-sequence star of spectral type A0 or A1, termed Sirius A, and a faint white dwarf companion of spectral type DA2, termed Sirius B. The distance betw

Capella is the brightest star in the northern constellation of Auriga. It has the Bayer designation α Aurigae, which is Latinised to Alpha Aurigae and abbreviated Alpha Aur or α Aur. Capella is the sixth-brightest star in the night sky, and the third-brightest in the northern celestial hemisphere after Arcturus and Vega. A prominent object in the northern sky, it is circumpolar to observers north of 44°N. Its name meaning "little goat" in Latin, Capella depicted the goat Amalthea that suckled Zeus in classical mythology. Capella is relatively close, at . It is one of the brightest X-ray source

Globular cluster

branch of astronomy that uses X-ray observation

spiral galaxy in the constellation Canes Venatici

globular cluster in the constellation Sagittarius

class of binary stars

star in the constellation Auriga

galaxy

binary star in the constellation Auriga

interacting galaxy

Red dwarf (spectral type M2V) in constellation Grus

star in the constellation Aquila

Galaxy cluster in the constellation Phoenix

star

star

binary star in the constellation Ursa Major

star in the constellation Caelum

star in the constellation Pictor

Type of x-ray source

Supernova remnant

variable star in the constellation Canes Venatici

star in the constellation Apus

binary star

gamma-ray burst

pulling apart of a star by tidal forces when it gets too close to a supermassive black hole

star in the constellation Auriga

supernova remnant in the constellation Cygnus

variable star in the constellation Auriga

star in the constellation Aquila

supermassive-black-hole-containing quasar in the constellation Crater

variable star in the constellation Canis Major

star in the constellation Aquarius

binary star in the constellation Hercules

star in the constellation Ara

astronomical source that emits only low-energy (i.e., soft) X-rays

galaxy

black hole called IGR J17091-3624

astronomical object emitting X-rays

star in the constellation Musca

sun-like star the constellation Gemini

white dwarf in the constellation Canis Major

Blazar TXS 0506+056, first known source of cosmic neutrinos

binary star system in the constellation Camelopardalis

nearby white dwarf in the constellation Leo Minor

star in the constellation Andromeda

star in the constellation Cancer