A pulsar (short for pulsating radio star) is a highly magnetized, rotating neutron star that emits a beam of electromagnetic radiation. This radiation can be observed only when the beam of emission is pointing toward Earth (much the way a lighthouse can be seen only when the light is pointed in the direction of an observer), and is responsible for the pulsed appearance of emission. Neutron stars are very dense, and have short, regular rotational periods. This produces a very precise interval between pulses that range roughly from milliseconds to seconds for an individual pulsar. Pulsars are believed to be one of the candidates of high and ultra-high energy astroparticles (see also Centrifugal mechanism of acceleration).
The precise periods of pulsars make them useful tools. Observations of a pulsar in a binary neutron star system were used to indirectly confirm the existence of gravitational radiation. The first extrasolar planets were discovered around a pulsar, PSR B1257+12. Certain types of pulsars rival atomic clocks in their accuracy in keeping time.
Pulsar, in comics, may refer to:
See also
Pulsar is a fictional character in the Marvel Universe, a member of the Shi'ar Imperial Guard.
Publication history
The character first appeared as Impulse in X-Men #107 (October 1977-February 1978), and was created by Chris Claremont and Dave Cockrum.
The character subsequently appears in X-Men: Spotlight on Starjammers #2 (June 1990), Quasar #32 (March 1992), Inhumans Vol. 4 #4 (September 2000), JLA/Avengers #1 (September 2003), and Uncanny X-Men #477 (October 2006) and #480 (January 2007).
Impulse appeared as part of the "Imperial Guard" entry in the Official Handbook of the Marvel Universe Deluxe Edition #6.
Fictional character biography
Pulsar is a long-time member of the Shi'ar Imperial Guard, also known as Impulse. He is made of pure energy, and his form is only contained by his costume. He can release blasts of energy from his visor.
He was with the Imperial Guard the first time they fought the X-Men.
He was seemingly killed by Vulcan, who breached Impulse's suit. Pulsar later reappeared alive, battling alongside the rest of the Imperial Guard in an assault on the Kree, where Pulsar gravely wounded the Inhuman elite warrior, Gorgon.
Görlitz ([ˈɡœɐ̯lɪts ]; Polish: Zgorzelec, Upper Sorbian: Zhorjelc, Lower Sorbian: Zgórjelc, Czech: Zhořelec) is a town in Germany and the capital of district of Görlitz. It is the easternmost town in the country, located on the Lusatian Neisse River in the Bundesland (Federal State) of Saxony. It is opposite the Polish town of Zgorzelec, which was a part of Görlitz until 1945.
Historically, Görlitz was in the region of Upper Lusatia and belonged to the Electorate of Saxony since 1635. However, in 1815, due to the partition of Saxony some parts of Lusatia were integrated into the Prussian Province of Silesia, and later into the Province of Lower Silesia. Görlitz is the largest city of the former Province of Lower Silesia that lies west of the Oder-Neisse line and hence remains in Germany today. Thus it is both the most Silesian city, in terms of character, and the largest, in Germany today. This is not unjustified since the city adapted to a large extent to the rest of Silesia when it was part of it administratively. The city combines Lusatian and Silesian traditions as well as German and Sorbian culture.
Görlitz (German: Landkreis Görlitz; Upper Sorbian: Wokrjes Zhorjelc; Czech: Zemský okres Zhoreleč) is a district (Kreis) in the Free State of Saxony, Germany. It is named after its capital city Görlitz. It borders (from the west and clockwise) the district of Bautzen, the state Brandenburg, Poland and the Czech Republic.
History
The district was established in August 2008 by merging three smaller districts: the district of Löbau-Zittau, Niederschlesischer Oberlausitzkreis (Lower Silesian Upper Lusatia district) and the urban district of Görlitz.
Geography
The district comprises the south-eastern part of Lusatia and west part of Silesia, including part of the Lausitzer Bergland. The Lusatian Neisse forms its eastern border, the Spree flows through the western part of the district.
Coat of arms
The coat of arms of Görlitz district contains references to the various territories the district has been part of in the past. The black eagle with the crescent over its chest refers to Silesia. The crowned lion with two tails refers to Bohemia. The wall refers to the city of Bautzen and Upper Lusatia, and the lime leaves refer to the Sorbian community.