CHAMPSS Sensitivity Curve Calculation


New Calculation


Configurations

param_chimefrb.json
{
    "constants": {
        "bandwidth": [400, 800], # MHz, CHIME/FRB
        "SEFD": 90, # Jy, CHIME/FRB
        "G": 1.16, # K/Jy, CHIME/FRB
        "t_samp": 0.983, # ms, CHIME/FRB
        "rfi_perc": 0.5
    },
    "assumptions": {
        "beta": 1.20,
        "SNR_min": 7,
        "n_p": 2,
        "duty_cycle": 0.04
    },
    "settings": {
        "use_tau_sc": 1, 
        "use_tau_samp": 1, 
        "use_tau_smear": 1
    },
    "version": 2
}
param_chimepulsar.json
{
    "constants": {
        "bandwidth": [400, 800], # MHz, CHIME/Pulsar
        "SEFD": 90, # Jy, CHIME/Pulsar
        "G": 1.16, # K/Jy, CHIME/Pulsar
        "t_samp": 0.00256, # ms, CHIME/Pulsar
        "rfi_perc": 0.5
    },
    "assumptions": {
        "beta": 1.20,
        "SNR_min": 7,
        "n_p": 2,
        "duty_cycle": 0.04
    },
    "settings": {
        "use_tau_sc": 1, 
        "use_tau_samp": 1, 
        "use_tau_smear": 0 # CHIME/Pulsar uses coherent dedispersion
    },
    "version": 2
}

References

[1]Lorimer, D. R. and Kramer, M., Handbook of Pulsar Astronomy, vol. 4. 2004.
[2]Faucher-Giguère, C.-A. and Kaspi, V. M., “Birth and Evolution of Isolated Radio Pulsars”, The Astrophysical Journal, vol. 643, no. 1, IOP, pp. 332–355, 2006. doi:10.1086/501516.
[3]Cordes, J. M. and Lazio, T. J. W., “NE2001.I. A New Model for the Galactic Distribution of Free Electrons and its Fluctuations”, arXiv e-prints, 2002. doi:10.48550/arXiv.astro-ph/0207156.
[4]Cordes, J. M. and Lazio, T. J. W., “NE2001. II. Using Radio Propagation Data to Construct a Model for the Galactic Distribution of Free Electrons”, arXiv e-prints, 2003. doi:10.48550/arXiv.astro-ph/0301598.

Scattering timescale were calculated by the Pygedm using the NE2001 model [3, 4]. This web application is developed by the CHIME Collaboration.