ARG0003kz0, IFRS?
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by ChrisMolloy
Here's ARG0003kz0, which appears to be either a #doublelobe or possibly a #triple. As for this being a #triple, this is dependant on the centre lobes not being #artefacts.
The contour overlay image in this post was created from sources, and using methods, described in this RGZ Talk
thread. First in red, NVSS cyan.As per the classification comments left, a possible host for this emission could be SDSS J095853.77+034520.7, which is listed as a star in SDSS DR13. This object is offset from the centre of the lobes to the NE, and there doesn't appear to be any radio references for this object.
There is the possibility that this emission is an #IFRS, due to the apparent absence of any proximity related radio sources or hosts, which align with the centre of the emission.
As always, comments, suggestions, welcome.
Posted
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by 42jkb scientist, admin
Again, great work on the image and using JeanTate's code to do this.
What SNR are the NVSS contours at? The reason I ask is because I want to know if all radio emission could be connected. Plus, I'm interested in the NVSS contours at the top going off the page.
Have you had a chance to look at TGSS?
Posted
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by ChrisMolloy in response to 42jkb's comment.
The NVSS and First parameters I'm using are as follows:
Nnsignoise = 4 # NVSS noise floor, in sigmas;
Nsf = np.sqrt(2.0) # NVSS contour scale factor;
Nsmooth = 20 # sigma for gaussian smoothing (NVSS contours).Fnsignoise = 2 # FIRST noise floor, in sigmas;
Fsf = np.sqrt(3.0) # FIRST contour scale factor;
Fsmooth = 4.0 # sigma for gaussian smoothing (FIRST contours).Have only looked at VLSSr but will look at TGSS. I wondered whether all the First emission could be connected, including the far SE First lobe.
Posted
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by ChrisMolloy in response to 42jkb's comment.
Here's the TGSS image.
The contour overlay image in this post was created from sources, and using methods, described in this RGZ Talk
thread. TGSS contours in white.Here's the parameters I used.
Tnsignoise = 1.2 # TGSS noise floor, in sigmas;
Tsf = 1.2 # TGSS contour scale factor;
Tsmooth = 13 # sigma for gaussian smoothing (TGSS contours).Posted
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by JeanTate in response to ChrisMolloy's comment.
Cool! 😃
But that makes the mystery deeper, doesn't it? Maybe a FIRST+TGSS contour overlay image?
Posted
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by ChrisMolloy in response to JeanTate's comment.
Here's the First TGSS overlay. Without further observations, I don't think it adds anything to the mystery.
The contour overlay image in this post was created from sources, and using methods, described in this RGZ Talk
thread. First contours in red, TGSS white.Posted