TY - JOUR
T1 - Early radio and X-ray observations of the youngest nearby Type Ia supernova PTF11kly (SN2011fe)
AU - Horesh, Assaf
AU - Kulkarni, S. R.
AU - Fox, Derek B.
AU - Carpenter, John
AU - Kasliwal, Mansi M.
AU - Ofek, Eran O.
AU - Quimby, Robert
AU - Gal-Yam, Avishay
AU - Cenko, S. Bradley
AU - De Bruyn, A. G.
AU - Kamble, Atish
AU - Wijers, Ralph A.M.J.
AU - Van Der Horst, Alexander J.
AU - Kouveliotou, Chryssa
AU - Podsiadlowski, Philipp
AU - Sullivan, Mark
AU - Maguire, Kate
AU - Howell, D. Andrew
AU - Nugent, Peter E.
AU - Gehrels, Neil
AU - Law, Nicholas M.
AU - Poznanski, Dovi
AU - Shara, Michael
PY - 2012/2/10
Y1 - 2012/2/10
N2 - On 2011 August 24 (UT) the Palomar Transient Factory (PTF) discovered PTF11kly (SN 2011fe), the youngest and most nearby Type Ia supernova (SN Ia) in decades. We followed this event up in the radio (centimeter and millimeter bands) and X-ray bands, starting about a day after the estimated explosion time. We present our analysis of the radio and X-ray observations, yielding the tightest constraints yet placed on the pre-explosion mass-loss rate from the progenitor system of this supernova. We find a robust limit of from sensitive X-ray non-detections, as well as a similar limit from radio data, which depends, however, on assumptions about microphysical parameters. We discuss our results in the context of single-degenerate models for SNe Ia and find that our observations modestly disfavor symbiotic progenitor models involving a red giant donor, but cannot constrain systems accreting from main-sequence or sub-giant stars, including the popular supersoft channel. In view of the proximity of PTF11kly and the sensitivity of our prompt observations, we would have to wait for a long time (a decade or longer) in order to more meaningfully probe the circumstellar matter of SNe Ia.
AB - On 2011 August 24 (UT) the Palomar Transient Factory (PTF) discovered PTF11kly (SN 2011fe), the youngest and most nearby Type Ia supernova (SN Ia) in decades. We followed this event up in the radio (centimeter and millimeter bands) and X-ray bands, starting about a day after the estimated explosion time. We present our analysis of the radio and X-ray observations, yielding the tightest constraints yet placed on the pre-explosion mass-loss rate from the progenitor system of this supernova. We find a robust limit of from sensitive X-ray non-detections, as well as a similar limit from radio data, which depends, however, on assumptions about microphysical parameters. We discuss our results in the context of single-degenerate models for SNe Ia and find that our observations modestly disfavor symbiotic progenitor models involving a red giant donor, but cannot constrain systems accreting from main-sequence or sub-giant stars, including the popular supersoft channel. In view of the proximity of PTF11kly and the sensitivity of our prompt observations, we would have to wait for a long time (a decade or longer) in order to more meaningfully probe the circumstellar matter of SNe Ia.
KW - X-rays: general
KW - radio continuum: general
KW - supernovae: general
UR - http://www.scopus.com/inward/record.url?scp=84856285260&partnerID=8YFLogxK
U2 - 10.1088/0004-637X/746/1/21
DO - 10.1088/0004-637X/746/1/21
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AN - SCOPUS:84856285260
SN - 0004-637X
VL - 746
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 1
M1 - 21
ER -