Open Access

Table 4.

Distance of the obscurers to the black hole (Eq. (2)) with MBH = 5.96 × 106M (Bentz & Katz 2015). M14 and B15 are short for Markowitz et al. (2014) and Beuchert et al. (2015), respectively.

Event 2000 − 2001 2002 2006-12-03 2008 2016-12-09a 2016-12-09b 2019-11-15 2019-12-05
Ref. M14 M14 Paper II B15 Paper II Paper II Paper III Paper III
Lion (erg s−1) 1043 1043 19.1 × 1042 8.9 × 1042 23.5 × 1042 23.5 × 1042 11.7 × 1042 5.8 × 1042
tcross (day) 77 − 94 13.3 0.23 − 372 ≳35 0.45 − 3.53 ∼0.23 1.2 − 50 ≳0.58 − 127
NH (1022 cm−2) 19 − 26 13.3 1.98 11.2 8.27, 1.25 1.33 3.5 8.3
log ξ 0.0, −0.3 0.0 1.55 1.1 2.81, 1.02 1.89 0.4 2.0

f = 0.1 (stream line)

r (ld) 144 − 156, 189 − 205 42 − 66 12 − 222 48 − 73 2.9 − 6.7, 32 − 73 ∼11 36 − 162 2.0 − 17
ne(108 cm−3) 0.6 − 0.7, 0.7 − 0.8 3.4 − 8.5 0.02 − 6.0 0.2 − 0.5 1.2 − 6.5, 0.6 − 3.2 ∼3.9 0.2 − 4.3 0.07 − 5.3
Radial size (102RS) 18 − 21 , 15 − 18 0.9 − 2.2 0.2 − 69 14 − 32 0.7 − 3.8 , 0.2 − 1.1 ∼0.2 0.5 − 11 1.1 − 84

f = 1 (spherical cloud)

r (ld) 57 − 62, 75 − 82 17 − 26 4.6 − 88 19 − 29 1.2 − 2.7, 13 − 29 ∼4.3 14 − 65 0.8 − 7.0
ne(109 cm−3) 0.4 − 0.5, 0.4 − 0.5 2.1 − 5.3 0.01 − 3.8 0.1 − 0.3 0.8 − 4.1, 0.4 − 2.0 ∼2.5 0.1 − 2.7 0.04 − 3.4
Radial size (RS) 281 − 329, 245 − 287 14 − 35 3.0 − 1092 221 − 511 12 − 60, 3.5 − 18 ∼3.1 8.4 − 172 18 − 1328

f = 10 (flatbread)

r (ld) 23 − 25, 30 − 33 6.7 − 11 1.8 − 35 7.6 − 12 0.5 − 1.1, 5.1 − 12 ∼1.7 5.7 − 26 0.3 − 2.8
ne(109 cm−3) 2.4 − 2.9 , 2.8 − 3.3 13 − 34 0.06 − 24 0.8 − 1.8 5.0 − 26 , 2.5 − 13 ∼15 0.8 − 17 0.3 − 21
Radial size (RS) 44 − 52 , 39 − 45 2.2 − 5.6 0.5 − 173 35 − 81 1.8 − 9.5 , 0.6 − 2.9 ∼0.5 1.3 − 27 2.8 − 210

f = 3000 (flatbread)

r (ld) 2.3 − 2.5, 3.1 − 3.3 0.7 − 1.1 0.2 − 3.6 0.8 − 1.2 0.05 − 0.1, 0.5 − 1.2 ∼0.2 0.6 − 2.6 0.03 − 0.3
ne(1011 cm−3) 2.3 − 2.8, 2.7 − 3.2 13 − 32 0.06 − 23 0.8 − 1.7 4.8 − 25, 2.4 − 12 ∼15 0.8 − 16 0.3 − 20
Radial size (RS) 0.46 − 0.54 , 0.40 − 0.47 0.02 − 0.06 0.005 − 1.8 0.36 − 0.85 0.02 − 0.10 , 0.01 − 0.03 ∼0.01 0.01 − 0.3 0.03 − 2.2

Notes. Distances are calculated for three representative geometries: a stream line (f = 0.1), a spherical cloud (f = 1), and a flatbread (f = 10). When multiple obscuration events occur on the same day, we use lower case letters (a and b here) to differentiate them from single events. We caution that the ionization parameter of 2019-12-05 (L), marked with †, is poorly constrained (Table 3).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.