J/ApJ/863/163 Type IIP supernova SN 2004dj radio observations (Nayana+, 2018)
Long-term behavior of a type IIP supernova SN 2004dj in the radio bands.
Nayana A. J., Chandra P., Ray A. K
<Astrophys. J., 863, 163 (2018)>
=2018ApJ...863..163N 2018ApJ...863..163N
ADC_Keywords: Supernovae; Radio continuum
Keywords: circumstellar matter ; radiation mechanisms: non-thermal ;
radio continuum: general ; supernovae: general ;
supernovae: individual (SN 2004dj)
Abstract:
We present radio observations and modeling of one of the nearest and
brightest Type IIP supernova SN 2004dj exploded in the galaxy NGC2403
at a distance of ∼3.5Mpc. Our observations span a wide frequency and
temporal range of 0.24-43GHz and ∼1d to 12yrs since the discovery. We
model the radio light curves and spectra with the synchrotron
emission. We estimate the mass-loss rate of the progenitor star to be
dM/dt∼1x10-6M☉/yr for a wind speed of 10km/s. We calculate the
radio spectral indices using 1.06, 1.40, 5.00, and 8.46GHz flux
density measurements at multiple epochs. We witness steepening in the
spectral index values for an extended period predominantly at higher
frequencies. We explain this as a signature of electron cooling
happening at the supernova shock in the plateau phase of the
supernova. We estimate the cooling timescales for inverse Compton
cooling and synchrotron cooling and find that inverse Compton cooling
is the dominant cooling process.
Description:
The VLA started observing SN 2004dj from 2004 August 02.9 UT. The SN
was observed in all VLA bands from 1.4GHz (L-band) to 44GHz bands.
The GMRT started observing SN 2004dj from 2004 August 12 and detected
radio emission from the SN at 1.4GHz (Chandra & Ray 2004IAUC.8397....3C 2004IAUC.8397....3C).
Extensive follow-up observations were carried out with the GMRT at
multiple epochs in the 1.4, 0.610, 0.325, and 0.235GHz bands until 2016.
We also included the 5GHz MERLIN (Multi-Element Radio Linked
Interferometer Network) observations from
Beswick+ (2005ApJ...623L..21B 2005ApJ...623L..21B) for further analysis.
Objects:
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RA (ICRS) DE Designation(s)
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07 37 17.02 +65 35 57.8 SN 2004dj = SN 2004dj
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 83 113 Details of radio observations of SN2004dj
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See also:
B/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)
J/A+AS/96/269 : Stellar Models from 0.8 to 120 Msolar (Schaller+, 1992)
J/PASP/117/773 : Classif. of SN host galaxies. III (van den Bergh+, 2005)
J/AJ/131/2245 : BATC photometry of SN2004dj (Zhang+, 2006)
J/other/PZ/28.8 : SN 2004dj UBVRI light curves (Tsvetkov+, 2008)
J/A+A/493/339 : XMM-Newton serendipitous Survey. V. (Watson+, 2009)
J/MNRAS/395/1409 : Type II-P SN progenitor constraints (Smartt+, 2009)
J/MNRAS/412/1419 : Nearby supernova rates (Leaman+, 2011)
J/ApJ/759/107 : Core-collapse SNe and host galaxies (Kelly+, 2012)
J/A+A/538/A120 : A unified supernova catalogue (Lennarz+, 2012)
J/A+A/544/A81 : Supernovae and their hosts in the SDSS DR8 (Hakobyan+, 2012)
J/ApJ/759/107 : Core-collapse SNe and host galaxies (Kelly+, 2012)
J/MNRAS/436/774 : Core collapse supernovae (type Ibc) (Eldridge+, 2013)
J/MNRAS/445/2440 : SN with associated Planck CMB temperatures (Yershov+, 2014)
J/ApJ/791/105 : SNe progenitor masses distribution (Williams+, 2014)
J/ApJ/795/142 : Photometric peculiar SNe Ia (Gonzalez-Gaitan+, 2014)
J/ApJ/799/215 : 26 type II-Plateau supernovae parameters (Pejcha+, 2015)
J/MNRAS/456/2848 : Properties of 500 SNe and their 419 hosts (Hakobyan+, 2016)
J/MNRAS/481/566 : Properties of 333 SNe & their 269 hosts (Karapetyan+, 2018)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 14 A14 "Y/M/D" Date Observation date (UT)
16- 22 F7.2 d Age [34.1/4190.3] Days since explosion assuming
date of explosion as 2004 June 28.00 (UT)
24- 29 F6.3 GHz Freq [0.2/43.4] Frequency of observation
31- 31 A1 --- l_Fnu Limit flag on Fnu
33- 38 F6.3 mJy Fnu [0.1/10.5] Supernova flux
40- 44 F5.3 mJy e_Fnu [0.04/0.6]? Uncertainty in Supernova flux
47- 47 A1 --- r_Fnu Source for Fnu if not this work (1)
50- 54 F5.3 mJy/beam RMS [0.03/4] RMS noise
56- 64 A9 --- Name Phase Calibrator Name
66- 70 F5.3 Jy cFnu [0.1/9.8]? Calibration flux
72- 83 A12 --- Tel Telescope/Instrument used (VLA, GMRT or
MERLIN)
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Note (1):
b = Beswick+ (2005ApJ...623L..21B 2005ApJ...623L..21B) and personal communication
with Megan Argo.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 08-Aug-2019