Probing jet base emission of M87* with the 2021 Event Horizon Telescope observations

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Table 1.

Parameter estimates for the different Gaussian model fits described in Section 4.2, Section 4.3 and Section 4.4.

Parameter	Symmetric	Asymmetric	Double
F₀ (mJy)	$70_{- 10}^{+ 10}$ $70^{+10}_{-10}$	$60_{- 20}^{+ 20}$ $60_{-20}^{+20}$	$50_{- 30}^{+ 30}$ $50_{-30}^{+30}$
x₁ (μas)	$- 304_{- 38}^{+ 38}$ $-304_{-38}^{+38}$	$- 300_{- 37}^{+ 37}$ $-300_{-37}^{+37}$	$- 297_{- 46}^{+ 46}$ $-297_{-46}^{+46}$
y₁ (μas)	$- 68_{- 12}^{+ 12}$ $-68_{-12}^{+12}$	$- 63_{- 12}^{+ 12}$ $-63_{-12}^{+12}$	$- 68_{- 18}^{+ 18}$ $-68_{-18}^{+18}$
fwhm₁(μas)	$169_{- 27}^{+ 27}$ $169_{-27}^{+27}$	$180_{- 35}^{+ 35}$ $180_{-35}^{+35}$	$150_{- 56}^{+ 56}$ $150_{-56}^{+56}$
ℛ₁	–	$0 . 7_{- 0.3}^{+ 0.3}$ $0.7_{-0.3}^{+0.3}$	$0 . 6_{- 0.5}^{+ 0.5}$ $0.6_{-0.5}^{+0.5}$
Φ₁ (°)	–	$14_{- 119}^{+ 119}$ $14_{-119}^{+119}$	$23_{- 101}^{+ 101}$ $23_{-101}^{+101}$
F₂ (mJy)	–	–	$20_{- 20}^{+ 20}$ $20_{-20}^{+20}$
x₂ (μas)	–	–	$- 291_{- 96}^{+ 96}$ $-291_{-96}^{+96}$
y₂ (μas)	–	–	$117_{- 126}^{+ 126}$ $117_{-126}^{+126}$
fwhm₂ (μas)	−	−	$150_{- 56}^{+ 56}$ $150_{-56}^{+56}$
ℛ₂	–	–	$0 . 5_{- 0.3}^{+ 0.3}$ $0.5_{-0.3}^{+0.3}$
Φ₂ (°)	–	–	$1_{- 120}^{+ 120}$ $1_{-120}^{+120}$

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