The giant outburst of EXO 2030+375 - I. Spectral and pulse profile evolution

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Volume 688 (August 2024)

A&A, 688 (2024) A213

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Table 2.

Best fit model parameters for the high and low luminosity states.

Parameter		L_high	L_low
i_obs	[deg]	130 ^( † )
Col₁/col₂ ratio		$0 . 43_{- 0.07}^{+ 0.08}$ $0.43^{+0.08}_{-0.07}$	$0 . 767_{- 0.031}^{+ 0.016}$ $0.767^{+0.016}_{-0.031}$

Cap₁/wall₁ ratio		$0 . 23_{- 0.12}^{+ 0.06}$ $0.23^{+0.06}_{-0.12}$	$0 . 118_{- 0.013}^{+ 0.025}$ $0.118^{+0.025}_{-0.013}$
i_mag, 1	[deg]	$116 ._{- 11 .}^{+ 26 .}$ $116.^{+26.}_{-11.}$ ^( † )
ϕ₁	[deg]	$324 . 1_{- 2.0}^{+ 1.1}$ $324.1^{+1.1}_{-2.0}$ ^( † )
σ_col, 1	[deg]	$18 . 9_{- 2.0}^{+ 2.2}$ $18.9^{+2.2}_{-2.0}$	$27 . 1_{- 2.4}^{+ 3.6}$ $27.1^{+3.6}_{-2.4}$
μ_cap, 1	[deg]	$34_{- 8}^{+ 4}$ $34^{+4}_{-8}$	$32 . 1_{- 1.7}^{+ 2.1}$ $32.1^{+2.1}_{-1.7}$
σ_cap, 1	[deg]	$10 . 4_{- 1.5}^{+ 1.9}$ $10.4^{+1.9}_{-1.5}$	$12 . 0_{- 1.4}^{+ 1.8}$ $12.0^{+1.8}_{-1.4}$

Cap₂/wall₂ ratio		0.51 ± 0.04	$0 . 20_{- 0.09}^{+ 0.22}$ $0.20^{+0.22}_{-0.09}$
i_mag, 2	[deg]	75.6 ± 0.6 ^( † )
ϕ₂	[deg]	$191 . 3_{- 1.4}^{+ 0.9}$ $191.3^{+0.9}_{-1.4}$ ^( † )
σ_col, 2	[deg]	$6 . 9_{- 0.7}^{+ 0.8}$ $6.9^{+0.8}_{-0.7}$	$8 . 4_{- 0.7}^{+ 1.0}$ $8.4^{+1.0}_{-0.7}$
μ_cap, 2	[deg]	$53 . 9_{- 2.5}^{+ 1.8}$ $53.9^{+1.8}_{-2.5}$	$39_{- 40}^{+ 5}$ $39^{+5}_{-40}$
σ_cap, 2	[deg]	$21_{- 4}^{+ 7}$ $21^{+7}_{-4}$	$10_{- 5}^{+ 20}$ $10^{+20}_{-5}$

Notes. ^( † )Tied together for both observations.

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