FERMIL2PSR ivo://nasa.heasarc/fermil2psr NASA/GSFC HEASARC Abdo et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Pulsar This catalog summarizes 0.1 GeV gamma-ray pulsar detections using data acquired by the Large Area Telescope (LAT) on the Fermi satellite. These pulsars are neutron stars identified using LAT data through periodicity searches in gamma-ray and radio data around LAT unassociated source positions. The catalogued pulsars are divided into three groups: millisecond pulsars, young radio-loud pulsars, and young radio-quiet pulsars. This catalog summarizes results of the analysis of pulse profiles and energy spectra, and analysis of the off-peak phase intervals, and compares the gamma-ray properties with those in the radio, optical, and X-ray bands. Flux limits for pulsars with no observed gamma-ray emission are provided. This database was constructed by the HEASARC by combining the tabulated data in the psrcat.dat, spec.dat, offpk.dat and refs.dat obtained from <a href="http://adsabs.harvard.edu/abs/2013yCat..22080017A">http://adsabs.harvard.edu/abs/2013yCat..22080017A</a>. This is a service provided by NASA HEASARC . 2013ApJS..208...17A https://heasarc.gsfc.nasa.gov/W3Browse/all/fermil2psr.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=fermil2psr& GET text/xml 180 99999 true 209.2601 -64.4917 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=fermil2psr GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_fermil2psr&Action=More+Options&Action=Parameter+Search&ConeAdd=1 FERMI 0.0166666666666667 Gamma-ray public fermil2psr Fermi LAT Second Catalog of Gamma-Ray Pulsars (2PC) name Pulsar Designation (PSR JHHMM+DDMMA) meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable period Pulsar Rotation Period ms time.period double nullable pdot Period First Derivative s/s arith.rate;time.period double nullable flux Best-Fit Energy Flux from 100 MeV to 100 GeV erg/s/cm^2 phot.flux;em.gamma double nullable flux_error Statistical Error for the Best-Fit Energy Flux from 100 MeV to 100 GeV erg/s/cm^2 stat.error;phot.flux;em.gamma double nullable ref_flux_1400_mhz Reference Bibcode for the 1400MHz Radio Flux Density meta.bib;phot.flux;em.radio.750-1500MHz char nullable plaw_scaling_energy Scaling Energy Used for the Power Law Model Spectral Fit MeV em.energy;em.gamma short nullable photon_index_error Statistical Error for the Best-Fit Photon Index (Alpha) stat.error;spect.index;em.X-ray double nullable plec_beta Best-Fit Exponential (Beta) in the PLEC Fit spect.index double nullable op_error_radius Estimated Statistical Error on the Localization of the Source degree stat.error;phys.size.radius double nullable op_eflp1_upper 95%-Confidence Energy Flux Upper Limit with PLEC1 Model erg/s/cm^2 phot.flux;em.gamma double nullable rg_phase_sep_error Uncertainty in Phase Separation Between the Gamma-Ray and Radio Peaks stat.error.sys;time.phase double nullable nh_upper Upper Limit on Hydrogen Column Density cm^-2 phys.columnDensity;stat.max double nullable plec_photon_index Photon Index (Alpha) in the PLEC Fit spect.index double nullable op_flux_error Statistical Error in Best-Fit Integrated Energy Flux in Spectral Model erg/s/cm^2 stat.error;phot.flux;em.gamma double nullable peak1r_hwhm Half-Width Half-Maximum of the Trailing (Right) First Peak Edge time.phase double nullable rg_phase_sep Phase Separation (Delta) Between the First Gamma-Ray Peak and the Radio Peak time.phase double nullable optical_flux Corrected (Unabsorbed) Optical Energy Flux in the V-Band phot.flux;em.opt.V double nullable peak2l_hwhm Half-Width Half-Maximum of the Leading (Left) 2nd Peak Edge, As Fitted time.phase double nullable op_ra Right Ascension of the Off-Peak Source degree pos.eq.ra double nullable op_ext Best-Fit Extension (in Case of Extended Model) degree phys.angSize double nullable op_pref Best-Fit Prefactor P arith.factor;spect;em.gamma double nullable mag_filter Filter Used for the Optical Observation (B, I, J, K, R, U, V or g) instr.bandpass char nullable plec_photon_flux_error Uncertainty in Photon Flux Integrated in PLEC Fit photon/cm^2/s stat.error;phot.count;em.gamma double nullable ref_distance Reference Bibcode for the Distance meta.ref;pos.distance char nullable op_pflp1_upper 95%-Confidence Photon Flux Upper Limit with PLEC1 Model photon/cm^2/s phot.count;em.gamma double nullable optical_flux_obj Object to Which the Measured Optical Flux Pertains meta.code char nullable extinction_neg_err Negative Uncertainty in Optical Extinction stat.error.sys;phys.absorption;em.opt;stat.min double nullable g_peak_sep Phase Separation (Delta) Between the First and Last Gamma-Ray Peaks time.phase double nullable plec1_scaling_energy Scaling Energy in PLEC1 Fit MeV em.energy;em.gamma double nullable proper_motion Proper Motion for the Pulsar mas/yr pos.pm double nullable op_scaling_energy Scaling Energy in Model MeV em.energy;em.gamma double nullable op_model Best Off-Peak Spectral Model meta.code char nullable op_plef_upper 95%-Confidence Energy Flux Upper Limit in Power Law Model erg/s/cm^2 phot.flux;em.gamma double nullable luminosity Pulsar Luminosity erg/s phys.luminosity;em.gamma double nullable photon_index Best-Fit Photon Index (Alpha) for the PLSuperExpCutoff (PLEC) Spectral Model spect.index;em.X-ray double nullable op_max_phase Maximum Phase of the Off-Peak Interval time.phase double nullable xray_flux_upper Upper Limit on X-Ray Flux erg/s/cm^2 phot.flux;em.X-ray double nullable extinction_upper Upper Limit on Optical Extinction phys.absorption;em.opt double nullable peak1r_hwhm_error HWHM P1R Uncertainty stat.error.sys;time.phase double nullable plec_energy_scaling Best-Fit Scaling Energy in the PLEC Fit MeV em.energy;em.gamma double nullable eff Pulsar Efficiency percent phys.luminosity;arith.ratio double nullable proper_motion_error Uncertainty in Proper Motion mas/yr stat.error;pos.pm double nullable ipdot_pos_err Positive Uncertainty for the Intrinsic Period Derivative s/s stat.error.sys;time.period;stat.max double nullable nh_neg_err Negative Systematic Uncertainty in Hydrogen Column Density cm^-2 stat.error;phys.columnDensity double nullable ts_cutoff Spectral Cutoff Significance stat.value int nullable app_mag_lower Lower Limit of Magnitude of the Optical Counterpart phot.mag;em.opt;stat.min double nullable ref_proper_motion Reference Bibcode for the Proper Motion meta.bib;pos.pm char nullable xray_flux Non-Thermal Unabsorbed X-Ray Energy Flux in the 0.3-10 keV Energy Band erg/s/cm^2 phot.flux;em.X-ray double nullable plaw_flux_error Uncertainty in Energy Flux Integrated in Power Law Fit erg/s/cm^2 stat.error;phot.flux;em.gamma double nullable plaw_photon_flux Photon Flux Integrated from 100 MeV to 100 GeV in Power Law Fit photon/cm^2/s phot.count;em.gamma double nullable discovery_band Pulsar Discovery in Radio, X-Ray, or Gamma-Ray Band instr.bandpass char nullable g_peak_sep_error Uncertainty in Phase Separation Between the First and Last Gamma-Ray Peaks stat.error.sys;time.phase double nullable op_ext_error Statistical Uncertainty in Best-Fit Extension degree stat.error;phys.angSize double nullable op_norm_error Statistical Error in Best-Fit File Normalization stat.error;arith;meta.modelled double nullable nh Hydrogen Column Density cm^-2 phys.columnDensity double nullable nh_pos_err Positive Systematic Uncertainty in Hydrogen Column Density cm^-2 stat.error;phys.columnDensity double nullable luminosity_stat_err Statistical Error for the Pulsar Luminosity erg/s stat.error;phys.luminosity;em.gamma double nullable op_ts_point Test Statistic Obtained at the Best-Fit Position of Assumed Point-Like Source stat.value double nullable plec_pref Best-Fit Prefactor P in the PLEC Fit cm^-2/s arith.factor;spect;em.gamma double nullable extinction_pos_err Positive Uncertainty in Optical Extinction stat.error.sys;phys.absorption;em.opt;stat.max double nullable ipdot_neg_err Negative Uncertainty for the Intrinsic Period Derivative s/s stat.error.sys;time.period;stat.min double nullable distance_upper Upper Limit on Pulsar Distance kpc pos.distance;stat.max double nullable xray_flux_pos_err X-Ray Flux Positive Uncertainty (90% CL) erg/s/cm^2 stat.error.sys;phot.flux;em.X-ray double nullable op_spatial_model Spatial Model meta.code char nullable plec_pref_error Uncertainty in Best-Fit Prefactor P in the PLEC Fit cm^-2/s stat.error;spect;em.gamma double nullable xray_flux_neg_err X-Ray Flux Negative Uncertainty (90% CL) erg/s/cm^2 stat.error.sys;phot.flux;em.X-ray double nullable iedot_pos_err Positive Uncertainty for the Intrinsic Spin-Down Power erg/s stat.error.sys;phys.luminosity;stat.max double nullable optical_flux_pos_err Positive Uncertainty in Optical Flux stat.error.sys;phot.flux;em.opt.V;stat.max double nullable op_plf_upper 95%-Confidence Photon Flux Upper Limit in Power Law Model photon/cm^2/s phot.count;em.gamma double nullable plec_flux Energy Flux Integrated from 100 MeV to 100 GeV in PLEC Fit erg/s/cm^2 phot.count;em.gamma double nullable op_photon_flux Best-Fit Integrated Photon Flux (100 MeV-316 GeV) in Spectral Model photon/cm^2/s phot.count;em.gamma double nullable iedot Intrinsic Spin-Down Power erg/s phys.luminosity double nullable optical_flux_neg_err Negative Uncertainty in Optical Flux stat.error.sys;phot.flux;em.opt.V;stat.min double nullable lii Galactic Longitude degree pos.galactic.lon double nullable plec1_cutoff Best-Fit Cutoff Energy in PLEC1 Fit MeV em.energy;em.gamma double nullable eff_stat_err Statistical Error for the Pulsar Efficiency percent stat.error.sys;phys.luminosity;arith.ratio double nullable edot Pulsar Spin-Down Luminosity erg/s phys.luminosity double nullable binary_flag Flag [YN] Indicates Pulsar Is in a Binary System meta.code.multip char nullable plaw_photon_index Best-Fit Photon Index (Alpha) in a Power Law Model spect.index double nullable peak2r_hwhm_error HWHM P2R Uncertainty stat.error.sys;time.phase double nullable optical_flux_upper Upper Limit on Optical Flux phot.flux;em.opt.V double nullable plec_photon_flux Photon Flux Integrated from 100 MeV to 100 GeV in PLEC Fit photon/cm^2/s phot.count;em.gamma double nullable op_flux Best-Fit Integrated Energy Flux (100 MeV-316 GeV) in Spectral Model erg/s/cm^2 phot.flux;em.gamma double nullable distance_neg_err Negative Uncertainty for the Pular Distance kpc stat.error;pos.distance double nullable luminosity_neg_err Negative Systematic Uncertainty for the Pulsar Luminosityn erg/s stat.error.sys;phys.luminosity;em.gamma;stat.min double nullable "distance" Distance to the Pulsar kpc pos.distance double nullable iedot_neg_err Negative Uncertainty for the Intrinsic Spin-Down Power erg/s stat.error.sys;phys.luminosity;stat.min double nullable op_cutoff Best-Fit Cutoff Energy MeV em.energy;em.gamma double nullable op_photon_flux_error Statistical Error in Best-Fit Integrated Photon Flux in Spectral Model photon/cm^2/s stat.error;phot.count;em.gamma double nullable op_pref_error Statistical Error in Best-Fit Prefactor P stat.error;spect;em.gamma double nullable plaw_photon_index_error Uncertainty in Best-Fit Photon Index (Alpha) in a Power Law Model stat.error;spect.index double nullable op_photon_index_error Statistical Error in Best-Fit Photon Index (Alpha) stat.error;spect.index double nullable op_ts_extend Significance of Any Possible Extension for the Source stat.value double nullable flux_1400_mhz 1400MHz Radio Flux Density mJy phot.flux;em.radio.750-1500MHz double nullable ipdot Intrinsic Period Derivative s/s time.period double nullable plec1_pref Best-Fit Prefactor P in the PLEC1 Fit cm^-2/s/MeV arith.factor;spect;em.gamma double nullable plec_photon_index_error Uncertainty in Photon Index (Alpha) in the PLEC Fit stat.error;spect.index double nullable bii Galactic Latitude degree pos.galactic.lat double nullable eff_pos_err Positive Uncertainty for the Pulsar Efficiency percent stat.error.sys;phys.luminosity;arith.ratio;stat.max double nullable peak2l_hwhm_error HWHM P2L Uncertainty stat.error.sys;time.phase double nullable eff_neg_err Negative Uncertainty for the Pulsar Efficiency percent stat.error.sys;phys.luminosity;arith.ratio;stat.min double nullable ts_dc Test Statistic for PLEC1 Model stat.value int nullable cutoff Best-Fit Cutoff Energy for the PLSuperExpCutoff Spectral Model MeV em.energy;em.gamma double nullable peak1l_hwhm_error Uncertainty in Half-Width Half-Maximum of the Leading (Left) First Peak Edge stat.error.sys;time.phase double nullable flux_xbkg_pos_err Positive Uncertainty (90% CL) in X-Ray Background Flux erg/s/cm^2 stat.error.sys;phot.flux;em.X-ray double nullable xdetect_flag Flag [012] Indicates Quality of X-Ray Detection, 2=Best meta.code char nullable op_min_phase Minimum Phase of the Off-Peak Interval time.phase double nullable cutoff_error Statistical Error in the Best-Fit Cutoff Energy MeV stat.error;em.energy;em.gamma double nullable plec1_pref_error Uncertainty in Best-Fit Prefactor P in the PLEC1 Fit cm^-2/s/MeV stat.error;spect;em.gamma double nullable plaw_photon_flux_error Uncertainty in Photon Flux Integrated in Power Law Fit photon/cm^2/s stat.error;phot.count;em.gamma double nullable op_dec Declination of the Off-Peak Source degree pos.eq.dec double nullable ts_improvement Test Statistic Improvement stat.value short nullable op_class Flag [LMUW] Indicates Off-Peak Emission Class meta.code char nullable op_cutoff_error Statistical Uncertainty in Best-Fit Cutoff Energy MeV stat.error;em.energy;em.gamma double nullable n_peaks Number of peaks in the Gamma-Ray profile meta.number short nullable plaw_flux Energy Flux Integrated from 100 MeV to 100 GeV in Power Law Fit erg/s/cm^2 phot.flux;em.gamma double nullable extinction Optical Extinction phys.absorption;em.opt double nullable flux_1400_mhz_upper Upper Limit for the 1400MHz Radio Flux Density mJy phot.flux;em.radio.750-1500MHz double nullable peak1l_hwhm Half-Width Half-Maximum of the Leading (Left) First Peak Edge, As Fitted time.phase double nullable photon_flux Best-Fit Photon Flux Integrated from 100 MeV to 100 GeV photon/cm^2/s phot.count;em.gamma double nullable flux_xbkg_neg_err Negative Uncertainty (90% CL) in X-Ray Background Flux erg/s/cm^2 stat.error.sys;phot.flux;em.X-ray double nullable pulsar_class Pular Classification [YRL/YRQ/MSP] meta.code.class char nullable distance_pos_err Positive Uncertainty for the Pular Distance kpc stat.error;pos.distance double nullable plaw_pref_error Uncertainty in Best-Fit Prefactor P in a Power Law Model cm^-2/s/MeV stat.error;spect;em.gamma double nullable plec1_cutoff_error Uncertainty in Best-Fit Cutoff Energy in PLEC1 Fit MeV stat.error;em.energy;em.gamma double nullable radio_phase_method Method Used to Choose the Radio Fiducial Phase meta.code char nullable op2_max_phase Maximum Phase of the 2nd Off-Peak Interval time.phase double nullable app_mag Optical Magnitude of the Optical Counterpart for the Pulsar or Pulsar System phot.mag;em.opt double nullable op_ts_var Significance of Variability in the Off-Pulse Emission stat.value double nullable plec_beta_error Uncertainty in Best-Fit Exponential (Beta) in the PLEC Fit stat.error;spect.index double nullable distance_method Method Used to Determine the Distance meta.bib;pos.distance char nullable luminosity_upper Upper Limit on Pulsar Luminosity erg/s phys.luminosity;em.gamma double nullable eff_upper Upper Limit for the Pulsar Efficiency percent phys.luminosity;arith.ratio double nullable op2_min_phase Minimum Phase of the 2nd Off-Peak Interval time.phase double nullable plec_flux_error Uncertainty in Energy Flux Integrated in PLEC Fit erg/s/cm^2 stat.error;phot.count;em.gamma double nullable luminosity_pos_err Positive Systematic Uncertainty for the Pulsar Luminosity erg/s stat.error.sys;phys.luminosity;em.gamma;stat.max double nullable flux_xbkg Estimated Non-Thermal X-Ray Background Flux erg/s/cm^2 phot.flux;em.X-ray double nullable plaw_pref Best-Fit Prefactor P in a Power Law Model cm^-2/s/MeV arith.factor;spect;em.gamma double nullable op_ts_cutoff Significance of Any Spectral Cutoff stat.value double nullable peak2r_hwhm Half-Width Half-Maximum of the Trailing (Right) 2nd Peak Edge, As Fitted time.phase double nullable op_norm Best-Fit File Normalization arith;meta.modelled double nullable photon_flux_error Statistical Error for Best-Fit Photon Flux Integrated from 100 MeV to 100 GeV photon/cm^2/s stat.error;phot.count;em.gamma double nullable op_photon_index Best-Fit Photon Index (Alpha) spect.index double nullable on_peak_flag Flag [YN] Indicates Spectral Fit Used Only On-Peak Events meta.code char nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable