Search: onr:"swepub:oai:research.chalmers.se:aab7f2bd-0664-422d-9d9f-117e3080bf84" >
Caltech-NRAO Stripe...
Caltech-NRAO Stripe 82 Survey (CNSS). III. The First Radio-discovered Tidal Disruption Event, CNSS J0019+00
-
- Anderson, M. M. (author)
- California Institute of Technology (Caltech)
-
- Mooley, K. P. (author)
- California Institute of Technology (Caltech),National Radio Astronomy Observatory
-
- Hallinan, G. (author)
- California Institute of Technology (Caltech)
-
show more...
-
- Dong, D. (author)
- California Institute of Technology (Caltech)
-
- Phinney, E. S. (author)
- California Institute of Technology (Caltech)
-
- Horesh, A. (author)
- The Hebrew University Of Jerusalem
-
- Bourke, Stephen, 1978 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Cenko, S. B. (author)
- NASA Goddard Space Flight Center,University of Maryland
-
- Frail, D. (author)
- National Radio Astronomy Observatory
-
- Kulkarni, S. R. (author)
- California Institute of Technology (Caltech)
-
- Myers, S. (author)
- National Radio Astronomy Observatory
-
show less...
-
(creator_code:org_t)
- 2020-11-09
- 2020
- English.
-
In: Astrophysical Journal. - : American Astronomical Society. - 1538-4357 .- 0004-637X. ; 903:2
- Related links:
-
https://authors.libr...
-
show more...
-
https://research.cha...
-
https://doi.org/10.3...
-
show less...
Abstract
Subject headings
Close
- We present the discovery of a nuclear transient with the Caltech-NRAO Stripe 82 Survey (CNSS), a dedicated radio transient survey carried out with the Karl G. Jansky Very Large Array (VLA). This transient, CNSS J001947.3+003527, exhibited a turn-on over a timescale of less than or similar to 1 yr, increasing in flux density at 3 GHz from <0.14 mJy in 2014 February to 4.4 0.1 mJy in 2015 March, reaching a peak luminosity of around 2015 October. The association of CNSS J0019+00 with the nucleus (Gaia and our very-long baseline interferometry positions are consistent to within 1 pc) of a nearby S0 Seyfert galaxy at 77 Mpc, together with the radio spectral evolution, implies that this transient is most likely a tidal disruption event (TDE). Our equipartition analysis indicates the presence of a similar to 15,000 km s(-1) outflow, having energy similar to 10(49) erg. We derive the radial density profile for the circumnuclear material in the host galaxy to be proportional to R-2.5. All of these properties suggest resemblance with radio-detected thermal TDEs like ASASSN-14li and XMMSL1 J0740-85. No significant X-ray or optical emission is detected from CNSS J0019+00, although this may simply be due to the thermal emission being weak during our late-time follow-up observations. From the CNSS survey we have obtained the first unbiased measurement of the rate of radio TDEs, R(>500 mu Jy) of about 2 x 10(-3) deg(-2), or equivalently a volumetric rate of about 10 Gpc(-3) yr(-1). This rate implies that all-sky radio surveys such as the VLA Sky Survey and those planned with ASKAP, will find many tens of radio TDEs over the next few years.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
To the university's database
- By the author/editor
-
Anderson, M. M.
-
Mooley, K. P.
-
Hallinan, G.
-
Dong, D.
-
Phinney, E. S.
-
Horesh, A.
-
show more...
-
Bourke, Stephen, ...
-
Cenko, S. B.
-
Frail, D.
-
Kulkarni, S. R.
-
Myers, S.
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Astronomy Astrop ...
- Articles in the publication
-
Astrophysical Jo ...
- By the university
-
Chalmers University of Technology