The Broad-lined Ic Supernova ZTF18aaqjovh (SN 2018bvw): An Optically Discovered Engine-driven Supernova Candidate with Luminous Radio Emission

The Broad-lined Ic Supernova ZTF18aaqjovh (SN 2018bvw) : An Optically Discovered Engine-driven Supernova Candidate with Luminous Radio Emission

We present ZTF18aaqjovh (SN 2018bvw), a high-velocity (broad-lined) stripped-envelope (Type Ic) supernova (Ic-BL SN) discovered in the Zwicky Transient Facility one-day cadence survey. ZTF18aaqjovh shares a number of features in common with engine-driven explosions: the photospheric velocity and the shape of the optical light curve are very similar to those of the Type.Ic-BL SN 1998bw, which was associated with a low-luminosity gamma-ray burst (LLGRB) and had relativistic ejecta. However, the radio luminosity of ZTF18aaqjovh is almost two orders of magnitude fainter than that of SN 1998bw at the same velocity phase, and the shock velocity is at most mildly relativistic (v.=.0.06-0.4c). A search of high-energy catalogs reveals no compelling gamma-ray burst (GRB) counterpart to ZTF18aaqjovh, and the limit on the prompt GRB luminosity of g >> ' L 1.6 10 erg s, iso 48 1 excludes a classical GRB but not an LLGRB. Altogether, ZTF18aaqjovh represents another transition event between engine-driven SNe associated with GRBs and ordinary Ic-BL SNe.

NATURVETENSKAP Fysik Astronomi, astrofysik och kosmologi hsv//swe
NATURAL SCIENCES Physical Sciences Astronomy, Astrophysics and Cosmology hsv//eng
Core-collapse supernovae
Type Ic supernovae
Supernovae
Hypernovae
Radio transient sources
Transient sources
High energy astrophysics
Time domain astronomy
Sky surveys

Corsi, Alessandra (author)
Cenko, S. Bradley (author)
Taddia, FrancescoStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)ftadd (author)
Kulkarni, S. R. (author)
Adams, Scott (author)
De, Kishalay (author)
Dekany, Richard (author)
Frederiks, Dmitry D. (author)
Fremling, Christoffer (author)
Golkhou, V. Zach (author)
Graham, Matthew J. (author)
Hung, Tiara (author)
Kupfer, Thomas (author)
Laher, Russ R. (author)
Mahabal, Ashish (author)
Masci, Frank J. (author)
Miller, Adam A. (author)
Neill, James D. (author)
Reiley, Daniel (author)
Riddle, Reed (author)
Ridnaia, Anna (author)
Rusholme, Ben (author)
Sharma, Yashvi (author)
Sollerman, JesperStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)solle (author)
Soumagnac, Maayane T. (author)
Svinkin, Dmitry S. (author)
Shupe, David L. (author)
Stockholms universitetInstitutionen för astronomi (creator_code:org_t)

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NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Astronomy Astrop ...

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