ARG00031wd-FIRSTJ124829.9+101941 possible jet from nearby starlike object?
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by Chris188
I have found this oval shape radiosource.
It is perfectly equivalent with an infrared source, coordinates: 12 48 29.96 +10 19 41.2
The infrared source (WISE 3.4 and 4.6 micron) slightly elongated in NE direction and matching with FIRSTJ124829.9+101941 radiosource.Posted
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by Chris188
I made 2 processed images from object.
Posted
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by Chris188
Starlike object is SDSS J124830.49+101936.4
Jet from nearby starlike object? Radiogalaxy? Interstellar cloud with radiosource?
Posted
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by Chris188
The object is centered.
Image descriptions.
Upper pair: WISE 3.4 and FIRST
Lower pair: WISE 4.6 and FIRSTPosted
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by Chris188
Posted
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by Chris188
Posted
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by Chris188
I have not found this infrared source in the WISE and AllWISE catalogs, only the nearby object is catalogized
(AllWISE J124830.46+101936.1 - SDSS J124830.49+101936.4).
This object clearly seen on infrared images, coordinates: 12 48 29.96 +10 19 41.2
It is an elongated shape (PA 45 deg - 10 arcsec) infrared source and matching with FIRST J124829.9+101941 radiosource.
The infrared source is more brightest in WISE 4.6 than WISE 3.4 micron.
I made some images, 60 arcsec x 60 arcsecPosted
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by Chris188
1;
Possible jet from nearby (SDSS J124830.49+101936.4) object.
Miniquasar? Quasar?2;
Very distant not catalogized galaxy, similar to ARG0000b7u - FIRST J081813.3+553848 radio source.
Radiogalaxy?Posted
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by JeanTate
The radio source is faint, and I wouldn't put much store in any deviation from a (radio) point source for something as faint as this.
It does seem to ~coincide (in terms of position) with a faint WISE source, but whether the detection in the WISE bands 3 and 4 are anything more than noise I rather doubt.
It's possible that it's a lobe quite some distance (on the sky) from its host, but if so the counter-lobe is invisible in FIRST, so trying to work out what such a host might be is ~impossible (IMHO).
Hope this helps, and happy hunting! 😃
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by Chris188 in response to JeanTate's comment.
The WISE bands:
1 - 3.4 micron
2 - 4.6 micron
3 - 12 micron
4 - 22 micronI downloaded the WISE 1-2 bands, not 3-4 bands. My images, the left is WISE 1 - 3.4 micron and WISE 2 - 4.6 micron.
Posted
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by Chris188 in response to JeanTate's comment.
I checking in Aladin and FIRST cutout (40 arcmin). I have not found the counter lobe.
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by Chris188
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by JeanTate
Cool! 😃
So no counter-lobe, and close proximity to a WISE source ... perhaps this is a (faint) #1-sided radio source?
As I understand it, these are often due to one lobe being more "visible" to us than the other, perhaps because we see the system at an angle not far off the jet axis (if directly on that axis, what we'd see may be a blazar). In such cases, the "near" lobe is more visible because of relativistic beaming (at least in part): a stream of charged particles traveling at relativistic speed (relative to us) seems to emit its radiation far more in the "forward" direction (in its own frame of reference, the emission is ~isotropic).
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