PTF 10bzf (SN2010ah): A broad-line Ic supernova discovered by the Palomar Transient Factory

A. Corsi, E. O. Ofek, D. A. Frail, D. Poznanski, I. Arcavi, A. Gal-Yam, S. R. Kulkarni, K. Hurley, P. A. Mazzali, D. A. Howell, M. M. Kasliwal, Y. Green, D. Murray, M. Sullivan, D. Xu, S. Ben-Ami, J. S. Bloom, S. B. Cenko, N. M. Law, P. NugentR. M. Quimby, V. Pal'Shin, J. Cummings, V. Connaughton, K. Yamaoka, A. Rau, W. Boynton, I. Mitrofanov, J. Goldsten

Research output: Contribution to journalArticlepeer-review

34 Scopus citations


We present the discovery and follow-up observations of a broad-line Type Ic supernova (SN), PTF 10bzf (SN2010ah), detected by the Palomar Transient Factory (PTF) on 2010 February 23. The SNdistance is ≅218Mpc, greater than GRB980425/SN1998bw and GRB060218/SN2006aj, but smaller than the other SNe firmly associated with gamma-ray bursts (GRBs). We conducted a multi-wavelength follow-up campaign with Palomar 48 inch, Palomar 60 inch, Gemini-N, Keck, Wise, Swift, the Allen Telescope Array, Combined Array for Research in Millimeter-wave Astronomy, Westerbork Synthesis Radio Telescope, and Expanded Very Large Array. Here we compare the properties of PTF10bzf with those of SN1998bw and other broad-line SNe. The optical luminosity and spectral properties of PTF 10bzf suggest that this SNis intermediate, in kinetic energy and amount of 56Ni, between non-GRB-associated SNe like 2002ap or 1997ef, and GRB-associated SNe like 1998bw. No X-ray or radio counterpart to PTF10bzf was detected. X-ray upper limits allow us to exclude the presence of an underlying X-ray afterglow as luminous as that of other SN-associated GRBs such as GRB030329 or GRB031203. Early-time radio upper limits do not show evidence for mildly relativistic ejecta. Late-time radio upper limits rule out the presence of an underlying off-axis GRB, with energy and wind density similar to the SN-associated GRB030329 and GRB031203. Finally, by performing a search for a GRB in the time window and at the position of PTF 10bzf, we find that no GRB in the interplanetary network catalog could be associated with this SN.

Original languageEnglish
Article number76
JournalAstrophysical Journal
Issue number2
StatePublished - 10 Nov 2011
Externally publishedYes


  • gamma-ray burst: general
  • radiation mechanisms: non-thermal
  • supernovae: general
  • supernovae: individual (PTF 10bzf)

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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