PSR J0737-3039 - Citizendia

**PSR J0737-3039A**
Observation data Epoch J2000
Artist's impression. The objects are not shown to scale: if they were depicted as the size of marbles, they would be 225 m (750 ft) apart. A marble is a small spherical toy usually made from Glass, Clay, or Agate. The metre or meter is a unit of Length. It is the basic unit of Length in the Metric system and in the International A foot (plural feet or foot; symbol or abbreviation ft or sometimes &prime – the prime symbol) is a non-SI unit See also MPEG animation (2. 4 MB)
Constellation (pronunciation)	Canis Major
Right ascension	07h 37m 51. A megabyte is a unit of Information or Computer storage equal to either 106 (1000000 Bytes or 220 (1048576 bytes depending on In Astronomy, an epoch is a moment in time used as a reference for the Orbital elements of a Celestial body. In common usage a constellation is a group of celestial bodies that are connected together in some arrangement typically stars to form a visible figure or picture Each culture has its own Constellations usually based on Mythology. Canis Major ( greater Dog) is one of the 88 modern Constellations and was also in Ptolemy 's list of 48 constellations Right ascension (abbrev RA; symbol α) is the Astronomical term for one of the two Coordinates of a point on the Celestial sphere 247s
Declination	-30° 39' 40. In Astronomy, declination (abbrev dec or δ) is one of the two coordinates of the Equatorial coordinate system, the other being either 74 "'
Characteristics
Spectral type	Pulsar
U-B color index	?
B-V color index	?
Variable type	None
Astrometry
Distance	1600 ± 2000 Ly (600 parsecs)
Details
Mass	1. In Astronomy, stellar classification is a classification of Stars based initially on photospheric temperature and its associated Spectral characteristics In Astronomy, the color index is a simple numerical expression that determines the color of an object which in the case of a Star gives its Temperature In Astronomy, the color index is a simple numerical expression that determines the color of an object which in the case of a Star gives its Temperature For the astronomical object see Variable star. Variable Star is a 2006 novel written by Spider Robinson Astrometry is the branch of Astronomy that relates to precise measurements and explanations of the positions and movements of Stars and other celestial bodies The cosmic distance ladder (also known as the Extragalactic Distance Scale) is the succession of methods by which astronomers determine the Distances to celestial A light-year or light year (symbol ly) is a unit of Length, equal to just under ten trillion Kilometres As defined by History The first direct measurements of an object at interstellar distances were undertaken by German Astronomer Friedrich Wilhelm Bessel in 1838 Mass is a fundamental concept in Physics, roughly corresponding to the Intuitive idea of how much Matter there is in an object 24 M_☉
Radius	? R_☉
Luminosity	? L_☉
Temperature	? K
Metallicity	?
Rotation	50 second
Age	? years

**PSR J0737-3039B**
Details
Mass	1. The solar mass is a standard way to express Mass in Astronomy, used to describe the masses of other Stars and galaxies. Remote Authentication Dial In User Service ( RADIUS) is a networking protocol that provides centralized access authorization and accounting management for people or computers In Astronomy, the solar radius is a unit of Length used to express the size of Stars It is equal to the current radius of the Sun. Luminosity has different meanings in several different fields of science The solar luminosity, L_\odot is a unit of Luminosity ( power emitted in the form of Photons conventionally used by Astronomers to Temperature is a physical property of a system that underlies the common notions of hot and cold something that is hotter generally has the greater temperature The kelvin (symbol K) is a unit increment of Temperature and is one of the seven SI base units The Kelvin scale is a thermodynamic In Astronomy and Physical cosmology, the metallicity of an object is the proportion of its matter made up of Chemical elements other than Hydrogen Stellar rotation is the angular motion of a Star about its axis The second ( SI symbol s) sometimes abbreviated sec, is the name of a unit of Time, and is the International System of Units A star is a massive luminous ball of plasma. The nearest star to Earth is the Sun, which is the source of most of the Energy on Earth A year (from Old English gēr) is the time between two recurrences of an event related to the Orbit of the Earth around the Sun Mass is a fundamental concept in Physics, roughly corresponding to the Intuitive idea of how much Matter there is in an object 35 M_☉
Radius	? R_☉
Luminosity	? L_☉
Temperature	? K
Metallicity	?
Rotation	0. The solar mass is a standard way to express Mass in Astronomy, used to describe the masses of other Stars and galaxies. Remote Authentication Dial In User Service ( RADIUS) is a networking protocol that provides centralized access authorization and accounting management for people or computers In Astronomy, the solar radius is a unit of Length used to express the size of Stars It is equal to the current radius of the Sun. Luminosity has different meanings in several different fields of science The solar luminosity, L_\odot is a unit of Luminosity ( power emitted in the form of Photons conventionally used by Astronomers to Temperature is a physical property of a system that underlies the common notions of hot and cold something that is hotter generally has the greater temperature The kelvin (symbol K) is a unit increment of Temperature and is one of the seven SI base units The Kelvin scale is a thermodynamic In Astronomy and Physical cosmology, the metallicity of an object is the proportion of its matter made up of Chemical elements other than Hydrogen Stellar rotation is the angular motion of a Star about its axis 3667 second
Age	? years
Other designations
PSR J0737-3039A, PSR J0737-3039, [CGB2005] J073751. The second ( SI symbol s) sometimes abbreviated sec, is the name of a unit of Time, and is the International System of Units A star is a massive luminous ball of plasma. The nearest star to Earth is the Sun, which is the source of most of the Energy on Earth A year (from Old English gēr) is the time between two recurrences of an event related to the Orbit of the Earth around the Sun A star catalogue, or star catalog, is an Astronomical catalogue that lists Stars In Astronomy, many stars are referred to simply by catalogue 248-303940. 83.

PSR J0737-3039 is a binary pulsar system discovered in 2003, the first known double pulsar. Pulsars are highly magnetized rotating Neutron stars that emit a beam of Electromagnetic radiation in the form of radio waves Year 2003 ( MMIII) was a Common year starting on Wednesday of the Gregorian calendar.

The object is similar to PSR B1913+16, which was discovered in 1974 by Taylor and Hulse, and for which the two won the 1993 Nobel Prize in Physics. PSR B1913+16 (also known as J1915+1606 is a Pulsar in a Binary star system, in orbit with another star around a common center of mass Year 1974 ( MCMLXXIV) was a Common year starting on Tuesday (link will display full calendar of the 1974 Gregorian calendar. Joseph Hooton Taylor Jr (born March 29, 1941) is an American Astrophysicist and Nobel Prize in Physics laureate Russell Alan Hulse (born November 28, 1950) is an American Physicist and winner of the Nobel Prize in Physics, shared with his Year 1993 ( MCMXCIII) was a Common year starting on Friday (link will display full 1993 Gregorian calendar) The Nobel Prize in Physics (Nobelpriset i fysik is awarded once a year by the Royal Swedish Academy of Sciences. Objects of this kind enable precise testing of Einstein's theory of general relativity, because relativistic effects can be seen in the timing of the pulsar pulses. Albert Einstein ( German: ˈalbɐt ˈaɪ̯nʃtaɪ̯n; English: ˈælbɝt ˈaɪnstaɪn (14 March 1879 – 18 April 1955 was a German -born theoretical General relativity or the general theory of relativity is the geometric theory of Gravitation published by Albert Einstein in 1916 However most such binary systems are merely known to consist of one pulsar and one neutron star; J0737-3039 is the first case where both components are known to be not just neutron stars but pulsars. A neutron star is a type of remnant that can result from the Gravitational collapse of a massive Star during a Type II, Type Ib or Type

The orbital period of J0737-3039 (2. 4 hours) is the smallest yet known for such an object (one-third that of the Taylor-Hulse object), which enables the most precise tests yet. In 2005, it was announced that measurements had shown an excellent agreement between general relativity theory and observation. Year 2005 ( MMV) was a Common year starting on Saturday (link displays full calendar of the Gregorian calendar. In particular, the predictions for energy loss due to gravitational waves appear to match the theory. In Physics, a gravitational wave is a Fluctuation in the Curvature of Spacetime which propagates as a wave, traveling outward from

As a result of energy loss due to gravitational waves, the common orbit shrinks by 7 mm per day. The Millimetre ( American spelling: millimeter, symbol mm) is a unit of Length in the Metric system, equal to The two components will coalesce in about 85 million years.

The pulsars

Property	Pulsar A	Pulsar B
Spin period	23 milliseconds	2. 8 seconds
Mass	1. 337 solar masses	1. 250 solar masses
Orbital period	2. 4 hours

The pulses from Pulsar B are only detectable for about 20 minutes in each orbit.

External links

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