J/MNRAS/511/1961 New CHIME/FRB I catalogue updates released (Hashimoto+, 2022)
Energy functions of fast radio bursts derived from the first CHIME/FRB
catalogue.
Hashimoto T., Goto T., Chen B.H., Ho S.C.-C., Hsiao T.Y.-Y., Wong Y.H.V.,
On A.Y.L., Kim S.J., Kilerci-Eser E., Huang K.-C., Santos D.J.D.,
Yamasaki S.
<Mon. Not. R. Astron. Soc., 511, 1961-1976 (2022)>
=2022MNRAS.511.1961H 2022MNRAS.511.1961H (SIMBAD/NED BibCode)
ADC_Keywords: Pulsars ; Radio sources ; Galaxies, radio ; Spectroscopy ;
Positional data ; Energy distributions ; Redshifts
Keywords: (transients:) fast radio bursts -
stars: luminosity function, mass function - stars: magnetars -
stars: magnetic field - stars: neutron - radio continuum: transients
Abstract:
Fast radio bursts (FRBs) are mysterious millisecond pulses in radio,
most of which originate from distant galaxies. Revealing the origin of
FRBs is becoming central in astronomy. The redshift evolution of the
FRB energy function, i.e. the number density of FRB sources as a
function of energy, provides important implications for the FRB
progenitors. Here, we show the energy functions of FRBs selected from
the recently released Canadian Hydrogen Intensity Mapping Experiment
(CHIME) catalogue using the Vmax method. The Vmax method allows us
to measure the redshift evolution of the energy functions as it is
without any prior assumption on the evolution. We use a homogeneous
sample of 164 non- repeating FRB sources, which are about one order of
magnitude larger than previously investigated samples. The energy
functions of non-repeating FRBs show Schechter function-like shapes at
z ≲ 1. The energy functions and volumetric rates of non-repeating
FRBs decrease towards higher redshifts similar to the cosmic
stellar-mass density evolution: there is no significant difference
between the non-repeating FRB rate and cosmic stellar-mass density
evolution with a 1 per cent significance threshold, whereas the cosmic
star-formation rate scenario is rejected with a more than 99 per cent
confidence level. Our results indicate that the event rate of
non-repeating FRBs is likely controlled by old populations rather than
young populations that are traced by the cosmic star- formation rate
density. This suggests old populations, such as old neutron stars and
black holes, as more likely progenitors of non-repeating FRBs.
Description:
The CHIME/FRB Collaboration (2021ApJS..257...59C 2021ApJS..257...59C, Cat. J/ApJS/257/59)
released the new Canadian Hydrogen Intensity Mapping Experiment
(CHIME) FRB catalogue that includes 536 FRB events detected over an
effective survey duration of 214.8 d, of which 474 are unique
non-repeating FRB sources and 18 are repeating FRB sources. The new
CHIME FRBs allow a much better statistical analysis of the FRB
population with about one order of magnitude larger homogeneous sample
than that in previous works.In this work, we present energy functions
and volumetric rates of the new CHIME FRBs as a function of redshift
to constrain the FRB progenitor without any prior assumption on the
redshift evolution, (i.e see section Introduction).
From selection functions analysis (i.e see section 2.1 Selection
functions), we select 535 FRBs sources with 599 FRBs events which have
passed through our data quality cut-offs. Then we compute physical
parameters (e.g energy, density, flux, redshift) and probabilitics
parameters (e.g as weight factors) as product results of the derived
energy functions (i.e see section 3 Results). All these data are
available in table.dat.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table.dat 1368 599 CHIME FRBs catalog with new added results data
from this work
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See also:
J/ApJS/257/59 : First CHIME/FRB Fast Radio Burst Catalog (CHIME/FRB Col.+,2021)
J/other/PASA/33.45 : FRBCAT The Fast Radio Burst (FRB) Catalog (Petroff+,2016)
https://www.chime-frb.ca/catalog : CHIME/FRB home page catalog data
Byte-by-byte Description of file: table.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 A12 --- Name TNS name (tns_name)
14- 28 A15 --- OName Previous name (previous_name)
30- 41 A12 --- RpName Associated repeater name if
any or "-9999" (repeater_name)
43- 53 F11.7 deg RAdeg Right ascension (J2000) (ra)
55- 59 E5.3 deg e_RAdeg Right ascension error; see
Section 3.2 (ra_err)
61 A1 --- n_RAdeg Notes on right ascension
(ra_notes) (1)
63- 72 F10.7 deg DEdeg Declination (J2000) (dec)
74- 78 E5.2 deg e_DEdeg Declination error; see Section
3.2 (dec_err)
80 A1 --- n_DEdeg Notes on declination
(dec_notes) (1)
82- 87 F6.2 deg GLON Galactic longitude (gl)
89- 94 F6.2 deg GLAT Galactic latitude (gb)
96- 102 F7.2 h ExpUp Exposure for upper transit of
the source (exp_up)
104- 108 F5.1 h e_ExpUp Exposure error for upper
transit of the source
(expuperr)
110 A1 --- n_ExpUp Notes on exposure for upper
transit of the source
(expupnotes) (1)
112- 118 F7.1 h ExpLo ?=-9999 Exposure for lower
transit of the source
(exp_low)
120- 126 F7.1 h e_ExpLo ?=-9999 Exposure error for
lower transit of the source
(explowerr)
128 A1 --- n_ExpLo Notes on exposure for lower
transit of the source
(explownotes) (1)
130- 134 F5.1 --- SNR Detection SNR (bonsai_snr)
136- 141 F6.1 pc/cm3 DM Detection dispersion measure,
DM (bonsai_dm)
143- 147 F5.1 Jy.ms bFt68 Lower limit fluence threshold
(68% confidence) (lowft68)
149- 152 F4.1 Jy.ms BFt68 Upper limit fluence threshold
(68% confidence) (upft68)
154- 158 F5.1 Jy.ms bFt95 Lower limit fluence threshold
(95% confidence) (lowft95)
160- 163 F4.1 Jy.ms BFt95 Upper limit fluence threshold
(95% confidence) (upft95)
165- 169 F5.1 --- SNRfitb SNR determined using the
fitting algorithm fitburst
(snr_fitb)
171- 179 F9.4 pc/cm3 DMfitb Dispersion measure DM
determined using the fitting
algorithm fitburst (dm_fitb)
(2)
181- 186 F6.4 pc/cm3 e_DMfitb Dispersion measure DM error
determined using the fitting
algorithm fitburst
(dmfitberr) (2)
188- 193 F6.1 pc/cm3 DMeNE2001 Dispersion measure DM excess
between DM determined by
fitburst + NE2001
(dmexcne2001) (3)
195- 200 F6.1 pc/cm3 DMeYMW16 Dispersion measure DM excess
between DM determined by
fitburst + YMW16
(dmexcymw16) (3)
202- 208 F7.5 s BcWidth Boxcar width of the pulse
(bc_width)
210- 218 F9.7 s Scat Scattering time at 600MHz
(scat_time) (2)
220- 225 E6.4 s e_Scat ?=-9999 Scattering time error
(scattimeerr) (2)
227- 231 F5.2 Jy Flux Peak flux of the band-average
profile (lower limit) (flux)
233- 237 F5.2 Jy e_Flux Flux error (flux_err)
239 A1 --- n_Flux Notes on lower bound fluxes
(flux_notes) (1)
241- 244 F4.1 Jy.ms Fluence Fluence (lower limit)
(fluence)
246- 249 F4.1 Jy.ms e_Fluence Fluence error (fluence_err)
251 A1 --- n_Fluence Notes on lower bound fluences
(fluence_notes) (1)
253 I1 --- Nsb Sub-burst number (sub_num) (4)
255- 270 F16.10 d MJD400 Time of arrival with reference
to 400.1953125MHz; Modified
Julian Date (mjd_400) (5)
272- 276 E5.3 d e_MJD400 Error on MJD400 (mjd400err)
(5)
278- 293 F16.10 d MJDinf Time of arrival with reference
to infinite frequency
(mjd_inf) (5)
295- 299 E5.3 d e_MJDinf Time of arrival error with
reference to infinite
frequency (mjdinferr) (5)
301- 308 F8.6 s Widthfitb Width of sub-burst using
fitburst (width_fitb)
310- 315 E6.4 s e_Widthfitb ?=-9999 Width error of
sub-burst using fitburst
(widthfitberr)
317- 322 F6.2 --- SpInd Spectral index for the
sub-burst (sp_idx)
324- 328 F5.2 --- e_SpInd Spectral index error for the
sub-burst (spidxerr)
330- 335 F6.1 --- spRun Spectral running for the
sub-burst (sp_run)
337- 341 F5.1 --- e_spRun Spectral running error for the
sub-burst (sprunerr)
343- 347 F5.1 MHz BFreq Highest frequency band of
detection for the sub-burst at
FWTM (high_freq)
349- 353 F5.1 MHz bFreq Lowest frequency band of
detection for the sub-burst at
FWTM (low_freq)
355- 359 F5.1 MHz Fpk Peak frequency for the
sub-burst (peak_freq)
361- 371 F11.3 --- chi2 Fit χ^2 from fitburst
(chi_sq)
373- 379 I7 --- dof Number of deg of freedom in
fitburst (dof)
381- 385 F5.3 --- Frac Fraction of spectral channels
flagged in fitburst
(flag_frac)
387 I1 --- Flag [0/1] Flag (excluded_flag) (6)
389 I1 --- l_Widthfitb [0/1] The width_fitb indicate
upper limits if 1. Otherwise
0. Different for sub-bursts.
(widthfitbupper_flag)
391 I1 --- l_logSubwIntRest [0/1] The logsubwintrest
indicate upper limits if 1.
Otherwise 0. Different for
sub-bursts.
(logsubwintrestupperflag)
393 I1 --- l_Scat [0/1] The scat_time indicates
the upper limit if 1.
Otherwise 0 (scatupperflag)
395- 405 F11.5 --- zSpec Spectroscopic redshift if
available. Otherwise -9999
(spec_z)
407 I1 --- f_zSpec The spec_z is available if 1.
Otherwise 0 (speczflag)
409- 428 F20.8 Jy.ms.Hz Eobs Fluence (Jy ms) * Δv,
where Δv is the band
width of 400 MHz at observer's
frame (E_obs)
430- 442 F13.1 Jy.ms.Hz e_Eobs Error of E_obs (Eobserror)
444 I1 --- Flagmsub Flag 1 if the row belongs to
multiple sub-bursts. 0 means
FRBs without sub-bursts
(subb_flag)
446 I1 --- Flagsup [1] The subbpflag = 1 can be
used when sub-burst parameters
are used. All rows have 1.
(subbpflag)
448 I1 --- Flagsub The commonpflag = 1 can be
used when common parameters
are used. For each tns_name,
the first sub-burst indicates
1. Different for sub-bursts.
(commonpflag)
450- 468 F19.15 MHz Dnuobs Observed spectral band width.
Common for sub-bursts. i.e.
highfreq-lowfreq for FRBs
without multiple sub-bursts
and
max(highfreq)-min(lowfreq)
for FRBs with multiple
sub-bursts. The latter works
because there is no frequency
gap between sub-bursts in the
catalogue. (deltanuoFRB)
470- 489 F20.18 --- zDM Redshift derived from a
dispersion measure. 50
percentile of the probability
distribution function (PDF)
(z_DM)
491- 510 F20.18 --- b_zDM [] The +1σ of z_DM.
84.135 percentile of the PDF -
z_DM (zDMerror_p)
512- 531 F20.18 --- B_zDM [] The -1σ of z_DM. z_DM
- 15.865 percentile of the PDF
(zDMerror_m)
533- 552 F20.8 Jy.ms.Hz Eobs400 Observed energy integrated
over 400 MHz at emitter's
frame. 50 percentile of the
PDF (Eobs400)
554- 574 F21.9 Jy.ms.Hz b_Eobs400 [] The +1σ of Eobs400.
84.135 percentile of the PDF -
Eobs400 (Eobs400errorp)
576- 596 F21.9 Jy.ms.Hz B_Eobs400 [] The -1σ of Eobs400.
Eobs400 - 15.865 percentile
of the PDF (Eobs400errorm)
598- 619 F22.19 [ms] logSubwIntRest Log rest-frame intrinsic
duration of a sub-burst in the
logarithmic scale. 50
percentile of the PDF.
Different for sub-bursts.
(logsubwintrest)
621- 640 F20.18 [ms] b_logSubwIntRest [] The +1σ of
logsubwintrest. 84.135
percentile of the PDF -
subwintrest. Different for
sub-bursts.
(logsubwintresterrorp)
642- 661 F20.18 [ms] B_logSubwIntRest [] The -1σ of
logsubwintrest.
logsubwintrest - 15.865
percentile of the PDF.
Different for sub-bursts.
(logsubwintresterrorm)
663- 682 F20.18 --- z Spec_z if available, otherwise
z_DM (z)
684- 703 E20.18 --- E_z Spec_z error if spec_z is
available, otherwise
zDMerror_p (zerrorp)
705- 724 E20.18 --- e_z Spec_z error if spec_z is
available, otherwise
zDMerror_m (zerrorm)
726- 743 F18.15 [10-7J] logEemit400 ? Radio energy in the
logarithmic scale integrated
over 400 MHz at emitter's
frame. 50 percentile of the
PDF (logErest400)
745- 763 F19.17 [10-7J] b_logEemit400 ? The +1σ of
logErest400. 84.135
percentile of the PDF -
logErest400
(logErest400errorp)
765- 783 F19.17 [10-7J] B_logEemit400 []? The -1σ of
logErest400. logErest400
-15.865 percentile of the PDF
(logErest400errorm)
785- 803 F19.17 [Gpc-3/yr] logrhoA ? The number density in the
logarithmic scale derived by
the Vmax method and redshift
bin A. Uncorrected for the
selection functions (logrhoA)
805- 824 F20.18 [Gpc-3/yr] b_logrhoA []? The +1σ of logrhoA.
84.135 percentile of the PDF -
logrhoA (logrhoAerrorp)
826- 845 F20.18 [Gpc-3/yr] B_logrhoA []? The -1σ of logrhoA.
logrhoA - 15.865 percentile of
the PDF (logrhoAerrorm)
847- 866 F20.18 [Gpc-3/yr] logrhoB ? The number density in the
logarithmic scale derived by
the Vmax method and redshift
bin B. Uncorrected for the
selection functions (logrhoB)
868- 887 F20.18 [Gpc-3/yr] b_logrhoB []? The +1σ of logrhoB.
84.135 percentile of the PDF -
logrhoB (logrhoBerrorp)
889- 908 F20.18 [Gpc-3/yr] B_logrhoB []? The -1σ of logrhoB.
logrhoB - 15.865 percentile of
the PDF (logrhoBerrorm)
910- 930 F21.19 --- WeightDM ? Weight factor of DMobs
(weight_DM)
932- 953 E22.17 --- b_WeightDM ? The +1σ of weight_DM.
84.135 percentile of the PDF -
weight_DM (weightDMerror_p)
955- 976 E22.17 --- B_WeightDM []? The -1σ of
weight_DM. weight_DM -15.865
percentile of the PDF
(weightDMerror_m)
978- 998 F21.19 --- Weightscat ? Weight factor of scattering
time τ_scat (weight_scat)
1000- 1021 E22.20 --- b_Weightscat ? The +1σ of
weight_scat. 84.135 percentile
of the PDF - weight_scat
(weightscaterror_p)
1023- 1044 E22.20 --- B_Weightscat []? The -1σ of
weight_scat. weight_scat
-15.865 percentile of the PDF
(weightscaterror_m)
1046- 1066 F21.19 --- Weightwint ? Weight factor of long
intrinsic duration wint
(weightwint)
1068- 1089 E22.20 --- b_Weightwint ? The +1σ of
weightwint. 84.135
percentile of the PDF -
weightwint
(weightwinterrorp)
1091- 1112 E22.20 --- B_Weightwint []? The -1σ of
weightwint. weightwint
-15.865 percentile of the PDF
(weightwinterrorm)
1114- 1134 F21.19 --- WeightFluence ? Weight factor of fluence
(weight_fluence)
1136- 1157 E22.20 --- b_WeightFluence []? The +1σ of
weight_fluence. 84.135
percentile of the PDF -
weight_fluence
(weightfluenceerror_p)
1159- 1180 E22.20 --- B_WeightFluence []? The -1σ of
weight_fluence. weight_fluence
-15.865 percentile of the PDF
(weightfluenceerror_m)
1182- 1201 F20.17 --- Weight ? WeightDM*weightscat*
weightwint*weight_fluence
(weight)
1203- 1223 F21.18 --- b_Weight []? The +1σ of weight.
84.135 percentile of the PDF -
weight (weighterrorp)
1225- 1244 F20.18 --- B_Weight []? The -1σ of weight.
weight -15.865 percentile of
the PDF (weighterrorm)
1246- 1264 F19.17 [Gpc-3/yr] WeightedlogrhoA ? The number density in the
logarithmic scale (redshift
bin A) corrected for the
selection functions
(weighted_logrhoA)
1266- 1285 F20.18 [Gpc-3/yr] b_WeightedlogrhoA []? The +1σ of
weighted_logrhoA. 84.135
percentile of the PDF -
weighted_logrhoA
(weightedlogrhoAerror_p)
1287- 1306 F20.18 [Gpc-3/yr] B_WeightedlogrhoA []? The -1σ of
weighted_logrhoA.
weighted_logrhoA -15.865
percentile of the PDF
(weightedlogrhoAerror_m)
1308- 1326 F19.17 [Gpc-3/yr] WeightedlogrhoB ? The number density in the
logarithmic scale (redshift
bin B) corrected for the
selection functions
(weighted_logrhoB)
1328- 1347 F20.18 [Gpc-3/yr] b_WeightedlogrhoB []? The +1σ of
weighted_logrhoB. 84.135
percentile of the PDF -
weighted_logrhoB
(weightedlogrhoBerror_p)
1349- 1368 F20.18 [Gpc-3/yr] B_WeightedlogrhoB []? The -1σ of
weighted_logrhoB.
weighted_logrhoB -15.865
percentile of the PDF
(weightedlogrhoBerror_m)
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Note (1): Note as follows:
f = Burst detected in the far sidelobes of CHIME.
c = RA/DEC from Chaterjee et al. (2017Natur.541...58C 2017Natur.541...58C)
l = A significant fraction of the localization region of the burst
is falling between the FWHM of two beams resulting in a large
error on the exposure. See Section 2.2.
m = RA/DEC from Marcote et al. (2020Natur.577..190M 2020Natur.577..190M)
n = No error on exposure due to precise position. See Section 2.2.
< = Extreme lower bound due to the event being detected in the far
sidelobes.
1 = Flux/Fluence is an extreme lower bound due to the event being
detected in the far sidelobes, 3 sources in our sample
2 = No flux/fluence calculated for this burst due to bad gains
with no scaling factor, 6 sources in our sample
Note (2): All statistically significant fitburst parameters (i.e., with
parameter value v and uncertainty σ such that v/σ>3) have
their best-fit value and 1σ uncertainty reported; for marginal
estimates, we report the 2σ upper limit obtained from fitburst.
Note (3): Assuming the best-fit sky position of the source.
Note (4): If the FRB has only one burst, then the sub-burst number is 0.
Sub-bursts listed in chronological order.
Note (5): For the specific sub-burst.
Note (6): Flag for events excluded from parameter inference due to
non-nominal telescope operation as follows:
1 = excluded (42 occurrences)
0 = included (558 occurrences)
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History:
From electronic version of the journal
(End) Luc Trabelsi [CDS] 20-Jan-2025