| Abstract : | Rapidly rotating neutron stars with very strong surface magnetic fields are
observed to emit pulsed emission in the whole range of electromagnetic
spectrum from radio to high energy gamma-rays. These so called pulsars are
known for their exceptional rotational stability. The radio emission from
pulsars is generally believed to be powered by the rotational energy of neutron
stars. More than 3000 pulsars have been currently known from radio
observations, however, it is observed that a large population of pulsars is also
bright in optical, X-rays and gamma-rays. The Fermi-LAT observations in the
energy range above 0.1 GeV have discovered a significant number of radio-
quiet gamma-ray pulsars and its latest catalogue features about 300 pulsars.
In gamma-ray pulsars a significant fraction of spin-down luminosity is
converted into the emission of high energy photons. However, origin of non-
thermal broadband electromagnetic emission from pulsars is not completely
understood and remains an active area of research. In this work, we explore
the connection between radio and high energy gamma-ray emissions using
archival data and investigate the plausible physics involved in the non-thermal
emission from the gamma-ray pulsars. We perform pulsar population study to
predict the detectability for the MACE gamma-ray telescope, which has just
started its regular science operation at Hanle. We also highlight the prospects
of detecting high energy gamma-ray emission above 20 GeV from new pulsar
candidates with the MACE. |
