Observation of pulsed gamma-rays above 25 GeV from the Crab Pulsar with MAGIC
One fundamental question about pulsars concerns the mechanism of their pulsed electromagnetic emission. Measuring the high- end region of a pulsar's spectrum would shed light on this question. By developing a new electronic trigger, we lowered the threshold of the Major Atmospheric gamma-ray Imaging...
| Autores: | ; ; ; ; ; |
|---|---|
| Tipo de documento: | Artículo |
| Fecha de publicación: | 2008 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Lenguaje: | Inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/50806 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/50806 |
| Nivel de acceso: | Acceso abierto |
| Palabra clave: | 537 539.1 Outer Magnetosphere Slot Gaps Emission Radiation TEV Telescope Search Acceleration Nebula. Electrónica (Física) Electricidad Física nuclear 2202.03 Electricidad 2207 Física Atómica y Nuclear |
| Sumario: | One fundamental question about pulsars concerns the mechanism of their pulsed electromagnetic emission. Measuring the high- end region of a pulsar's spectrum would shed light on this question. By developing a new electronic trigger, we lowered the threshold of the Major Atmospheric gamma-ray Imaging Cherenkov (MAGIC) telescope to 25 giga-electron volts. In this configuration, we detected pulsed gamma-rays from the Crab pulsar that were greater than 25 giga-electron volts, revealing a relatively high cutoff energy in the phase- averaged spectrum. This indicates that the emission occurs far out in the magnetosphere, hence excluding the polar- cap scenario as a possible explanation of our measurement. The high cutoff energy also challenges the slot- gap scenario. |
|---|