ROI_MODEL = xROIModel(10.4075, -9.3425)
# Read in the spectral models.
spectral_model_spline = parse_spectral_model('Abell_85.txt')
def energy_spectrum(E, t):
return spectral_model_spline(E)
polarization_degree = constant(0.)
polarization_angle = constant(0.)
#abell85 = xPointSource('Abell 85', ROI_MODEL.ra, ROI_MODEL.dec,
# energy_spectrum, polarization_degree, polarization_angle)
img_file_path = os.path.join(XIMPOL_CONFIG, 'fits', 'abell85.fits')
abell85 = xExtendedSource('Abell 85', img_file_path, energy_spectrum,
polarization_degree, polarization_angle)
ROI_MODEL.add_source(abell85)
def display():
"""Display the source model.
"""
from ximpol.utils.matplotlib_ import pyplot as plt
from ximpol.srcmodel.img import xFITSImage
print(ROI_MODEL)
fig = plt.figure('Energy spectrum')
spectral_model_spline.plot(logy=True, show=False, label='Total')
for i,base_name in enumerate(base_names):
energy_spectrum = power_law(9.59/len(base_names), 2.108) # This ineeds to be checked!
pol_mapx_path = os.path.join(XIMPOL_CONFIG, 'fits', '%s_x.fits' % base_name)
pol_mapy_path = os.path.join(XIMPOL_CONFIG, 'fits', '%s_y.fits' % base_name)
polarization_map = xPolarizationMap(pol_mapx_path, pol_mapy_path)
polarization_maps.append(polarization_map)
def nebula_polarization_angle(E, t, ra, dec):
return polarization_map.polarization_angle(ra, dec)
def nebula_polarization_degree(E, t, ra, dec):
return polarization_map.polarization_degree(ra, dec)
_source=xExtendedSource('Crab Nebula (%d)' % i,
img_file_path,
energy_spectrum,
nebula_polarization_degree,
nebula_polarization_angle)
ROI_MODEL.add_source(_source)
pass
if __name__ == '__main__':
print(ROI_MODEL)
def display():
"""Display the source model.
"""
from ximpol.utils.matplotlib_ import pyplot as plt
from ximpol.srcmodel.img import xFITSImage
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import numpy
import os
from ximpol.srcmodel.roi import xExtendedSource, xROIModel
from ximpol.srcmodel.spectrum import power_law
from ximpol.srcmodel.polarization import constant
from ximpol import XIMPOL_CONFIG
ROI_MODEL = xROIModel(83.633083, 22.014500)
img_file_path = os.path.join(XIMPOL_CONFIG, 'fits', 'crab_0p3_10p0_keV.fits')
energy_spectrum = power_law(10., 2.)
polarization_degree = constant(0.157)
polarization_angle = constant(numpy.radians(161.1))
crab_nebula = xExtendedSource('Crab nebula', img_file_path, energy_spectrum,
polarization_degree, polarization_angle)
ROI_MODEL.add_source(crab_nebula)
if __name__ == '__main__':
print(ROI_MODEL)
# Read the polarization maps for the non-thermal component.
pol_mapx_path = os.path.join(XIMPOL_CONFIG, 'fits', 'tycho_x.fits')
pol_mapy_path = os.path.join(XIMPOL_CONFIG, 'fits', 'tycho_y.fits')
polarization_map = xPolarizationMap(pol_mapx_path, pol_mapy_path)
def nonthermal_polarization_angle(E, t, ra, dec):
return polarization_map.polarization_angle(ra, dec)
def nonthermal_polarization_degree(E, t, ra, dec):
return polarization_map.polarization_degree(ra, dec)
thermal_component = xExtendedSource('Tycho thermal', le_img_file_path,
thermal_energy_spectrum,
thermal_polarization_degree,
thermal_polarization_angle)
nonthermal_component = xExtendedSource('Tycho non-thermal', he_img_file_path,
nonthermal_energy_spectrum,
nonthermal_polarization_degree,
nonthermal_polarization_angle)
ROI_MODEL.add_sources(thermal_component, nonthermal_component)
def display():
"""Display the source model.
"""
from ximpol.utils.matplotlib_ import pyplot as plt
print(ROI_MODEL)
pol_mapx_path = os.path.join(XIMPOL_CONFIG, 'fits', 'casa_x.fits')
#pol_mapy_path = os.path.join(XIMPOL_CONFIG, 'fits', 'casa_50_y.fits')
pol_mapy_path = os.path.join(XIMPOL_CONFIG, 'fits', 'casa_y.fits')
polarization_map = xPolarizationMap(pol_mapx_path, pol_mapy_path)
def nonthermal_polarization_angle(E, t, ra, dec):
return polarization_map.polarization_angle(ra, dec)
def nonthermal_polarization_degree(E, t, ra, dec):
return polarization_map.polarization_degree(ra, dec)
thermal_component = xExtendedSource('Cas A thermal', le_img_file_path,
thermal_energy_spectrum,
thermal_polarization_degree,
thermal_polarization_angle)
nonthermal_component = xExtendedSource('Cas A non-thermal', he_img_file_path,
nonthermal_energy_spectrum,
nonthermal_polarization_degree,
nonthermal_polarization_angle)
ROI_MODEL.add_sources(thermal_component, nonthermal_component)
def display():
"""Display the source model.
"""
from ximpol.utils.matplotlib_ import pyplot as plt
from ximpol.srcmodel.img import xFITSImage
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import numpy
import os
from ximpol.srcmodel.roi import xExtendedSource, xROIModel
from ximpol.srcmodel.spectrum import power_law
from ximpol.srcmodel.polarization import constant
from ximpol import XIMPOL_CONFIG
ROI_MODEL = xROIModel(83.633083, 22.014500)
img_file_path = os.path.join(XIMPOL_CONFIG, 'fits', 'crab_0p3_10p0_keV.fits')
energy_spectrum = power_law(9.59, 2.108)
polarization_degree = constant(0.157)
polarization_angle = constant(numpy.radians(161.1))
crab_nebula = xExtendedSource('Crab nebula', img_file_path, energy_spectrum,
polarization_degree, polarization_angle)
ROI_MODEL.add_source(crab_nebula)
if __name__ == '__main__':
print(ROI_MODEL)