AAS: Peering Through the Lens of the Milky Way Supermassive Black Hole

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AAS: Peering Through the Lens of the Milky Way Supermassive Black Hole

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Post by notFritzArgelander »


An interesting possibility but I suspect that the complex environment will create much confusion and the technique will be limited in use.

https://aasnova.org/2021/11/23/peering- ... lack-hole/
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, Z12 f5; Cats: VMC110L, Intes MK66,VMC200L f9.75 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker IV, Vixen Porta II, Celestron CG5
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Re: AAS: Peering Through the Lens of the Milky Way Supermassive Black Hole

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Post by SparWeb »


Are there wavelengths where this is more viable? I share your doubt that everything in the visible spectrum will be washed out, but what about in x-rays? Just blind speculation (and excuse the pun).

Something else this has just made me think about... how much of the surrounding environment of galaxies is obscured from our knowledge on the other side of the central core of the Milky Way? We can't see directly through it but how far does the obstruction extend?
Just something I have not thought about before, but surely someone has, so I can go see what I can look up...
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Re: AAS: Peering Through the Lens of the Milky Way Supermassive Black Hole

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Post by notFritzArgelander »


SparWeb wrote: Sat Nov 27, 2021 5:02 am Are there wavelengths where this is more viable? I share your doubt that everything in the visible spectrum will be washed out, but what about in x-rays? Just blind speculation (and excuse the pun).

Something else this has just made me think about... how much of the surrounding environment of galaxies is obscured from our knowledge on the other side of the central core of the Milky Way? We can't see directly through it but how far does the obstruction extend?
Just something I have not thought about before, but surely someone has, so I can go see what I can look up...
X-ray and higher energy would likely penetrate better but the angular resolution would not be as good.

My recollection is that seeing through the center of the MW is highly dependent on the direction of the observation.

If you’re looking this up anyway please report back?
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, Z12 f5; Cats: VMC110L, Intes MK66,VMC200L f9.75 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker IV, Vixen Porta II, Celestron CG5
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Re: AAS: Peering Through the Lens of the Milky Way Supermassive Black Hole

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Post by SparWeb »


From a google search, I'm mostly getting references to things like IC 342 (sometimes nicknamed the Hidden Galaxy).

For a better search, I have to leave google behind and look within publications themselves.

This survey is interesting in its own right, https://aasnova.org/2016/12/30/selectio ... milky-way/
It answers my question this way:
the detection rate decreases with H i mass for galaxies found in the LV/Galactic bulge area, where stellar crowding and extinction severely affect the cross-identification in the optical/NIR.
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Re: AAS: Peering Through the Lens of the Milky Way Supermassive Black Hole

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Post by notFritzArgelander »


SparWeb wrote: Sun Nov 28, 2021 3:03 pm From a google search, I'm mostly getting references to things like IC 342 (sometimes nicknamed the Hidden Galaxy).

For a better search, I have to leave google behind and look within publications themselves.

This survey is interesting in its own right, https://aasnova.org/2016/12/30/selectio ... milky-way/
It answers my question this way:
the detection rate decreases with H i mass for galaxies found in the LV/Galactic bulge area, where stellar crowding and extinction severely affect the cross-identification in the optical/NIR.
Yes, I think that it is going to be difficult to sort this out. IC 342 at least lies away from the Galaxy's center. Sorting out foreground from background is going to be much more difficult in the direction of Sgr A*. Radio H I might be better suited since Doppler shifts due to MW rotation should be canceled out leaving the peculiar velocity of objects behind the BH to stand out from MW noise.
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, Z12 f5; Cats: VMC110L, Intes MK66,VMC200L f9.75 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker IV, Vixen Porta II, Celestron CG5
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