J/A+A/655/A93 Mrk 501 long-term multi-band photometry (Arbet-Engels+, 2021)
Long-term multi-band photometric monitoring of Mrk 501.
Arbet-Engels A., Baack D., Balbo M., Biland A., Bretz T., Buss J.,
Dorner D., Eisenberger L., Elsaesser D., Hildebrand D., Iotov R.,
Kalenski A., Mannheim K., Mitchell A., Neise D., Noethe M., Paravac A.,
Rhode W., Schleicher B., Sliusar V., Walter R.
<Astron. Astrophys. 655, A93 (2021)>
=2021A&A...655A..93A 2021A&A...655A..93A (SIMBAD/NED BibCode)
ADC_Keywords: BL Lac objects ; Photometry ; Gamma rays ; X-ray sources
Keywords: BL Lacertae objects: individual: Mrk 501 -
radiation mechanisms: non-thermal - radiative transfer -
galaxies: active
Abstract:
Radio-to-TeV observations of the bright nearby (z=0.034) blazar
Markarian 501 (Mrk 501), performed from December 2012 to April 2018,
are used to study the emission mechanisms in its relativistic jet. We
examined the multi-wavelength variability and the correlations of the
light curves obtained by eight different instruments, including the
First G-APD Cherenkov Telescope (FACT), observing Mrk 501 in very
high-energy (VHE) gamma-rays at TeV energies. We identified individual
TeV and X-ray flares and found a sub-day lag between variability in
these two bands. The source was found to be variable on different
timescales. Simultaneous TeV and X-ray variations with almost zero lag
are consistent with synchrotron self-Compton (SSC) emission, where TeV
photons are produced through inverse Compton scattering. The
characteristic time interval of 5-25 days between TeV flares is
consistent with them being driven by Lense-Thirring precession.
Description:
Multi-wavelength observations of blazar Mrk 501 (radio, optical
V-Band, UV, X-rays, gamma-rays GeV and TeV),
2012 December 14 (56275 MJD) to 2018 April 18 (58226 MJD).
Objects:
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RA (ICRS) DE Designation(s)
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16 53 52.22 +39 45 36.6 Mrk 501 = 3FGL J1653.9+3945
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
fig1bat.dat 54 605 Swift/BAT X-rays light-curve data (15-50keV)
fig1xrts.dat 47 285 Swift/XRT X-rays light-curve data (0.3-2keV)
fig1xrth.dat 46 285 Swift/XRT X-rays light-curve data (2-10 keV)
fig1vban.dat 36 283 Optical (V-band) light-curve data
fig1uvot.dat 36 298 Optical Swift/UVOT (UVM2) light-curve data
fig1ferm.dat 50 273 Fermi LAT light-curve data (1-300GeV)
fig1fact.dat 64 630 FACT telescope TeV light-curve data
(Ethreshold∼750GeV)
fig1radi.dat 36 221 OVRO radio light-curve data (15GHz)
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See also:
J/A+A/647/A88 : Multi-wavelength variability of Mrk 421 (Arbet-Engels+, 2021)
J/ApJS/222/24 : VRI LCs of BL Lac object Mrk 501 2010-2015 (Xiong+, 2016)
J/A+A/573/A50 : Mrk 501 multiwavelength observations in 2008 (Aleksic+, 2017)
J/ApJ/849/161 : BVRI light curves of the BL Lac object Mrk 501 (Feng+, 2017)
Byte-by-byte Description of file: fig1bat.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Target name
10- 18 F9.3 d MJD Modified Julian date
21- 27 F7.4 h ExpTime Exposure time
30- 41 E12.5 10-3ph/s/pix Flux Flux, 15-50keV, Swift/BAT
44- 54 E11.5 10-3ph/s/pix e_Flux Flux error, 15-50keV, Swift/BAT
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Byte-by-byte Description of file: fig1xrts.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Target name
10- 18 F9.3 d MJD Modified Julian date
21- 28 F8.5 h ExpTime Exposure time
31- 38 F8.5 ph/s Flux Flux, 0.3-2keV, Swift/XRT
41- 47 F7.5 ph/s e_Flux Flux error, 0.3-2keV, Swift/XRT
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Byte-by-byte Description of file: fig1xrth.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Target name
10- 18 F9.3 d MJD Modified Julian date
21- 28 F8.5 h ExpTime Exposure time
31- 37 F7.5 ph/s Flux Flux, 2-10keV, Swift/XRT
40- 46 F7.5 ph/s e_Flux Flux error, 2-10keV, Swift/XRT
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Byte-by-byte Description of file: fig1vban.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Target name
10- 18 F9.3 d MJD Modified Julian date
21- 27 F7.5 mJy Flux Flux, V-band, Kuiper & Bok telescopes
30- 36 F7.5 mJy e_Flux Flux error, V-band, Kuiper & Bok telescopes
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Byte-by-byte Description of file: fig1uvot.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Target name
10- 18 F9.3 d MJD Modified Julian date
21- 27 F7.5 mJy Flux Flux, UVM2, Swift/UVOT
30- 36 F7.5 mJy e_Flux Flux error, UVM2, Swift/UVOT
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Byte-by-byte Description of file: fig1ferm.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Target name
10- 17 F8.2 d MJD Modified Julian date
20- 28 E9.3 ph/cm2/s Flux Flux, 1-300GeV, Fermi LAT
31- 39 E9.3 ph/cm2/s e_Flux Flux error, 1-300GeV, Fermi LAT
42- 50 E9.3 ph/cm2/s ULFlux ? Flux upper limit, 95% confidence level
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Byte-by-byte Description of file: fig1fact.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Target name
10- 18 F9.3 d MJD Modified Julian date
21- 25 F5.3 h ExpTime Exposure time
28- 34 F7.3 h-1 ExcsRate Events excess per hour (in evts/h unit)
37- 42 F6.3 10-11ph/cm2/s Flux Flux, E>750GeV, FACT
45- 49 F5.3 10-11ph/cm2/s e_Flux Flux error, E>750GeV, FACT
52- 57 F6.3 Crab FluxCU Flux, E>750GeV, FACT (in Crab unit)
60- 64 F5.3 Crab e_FluxCU Flux error, E>750GeV, FAC (in Crab unit)
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Byte-by-byte Description of file: fig1radi.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Target name
10- 18 F9.3 d MJD Modified Julian date
21- 27 F7.5 Jy Flux Flux, OVRO at 15GHz
30- 36 F7.5 Jy e_Flux Flux error, OVRO at 15GHz
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Acknowledgements:
Vitalii Sliusar, vitalii.sliusar(at)unige.ch
(End) Patricia Vannier [CDS] 08-Sep-2021