Table 1
Summary of models indicating the strength and orientation of the ISMF.
| ISMF strength (μG) | ISMF orientation | B S W | Solar-wind | Lyman-α | V1 | V2 | IBEX | Ref. |
|
|
||||||||
| 1.8 | α ~ 40° | – | SS | + | – | – | – | (Ben-Jaffel et al. 2000) |
| – | β = 0 | – | – | + | – | – | – | (Lallement et al. 2005) |
| 1.8 | (228 ± 14°,42 ± 8.5°) | – | SS | + | – | – | – | (Ratkiewicz et al. 2008) |
| 3.8 | (248,35) ± 5° | – | SS | – | + | + | – | (Ratkiewicz & Grygorczuk 2008) |
| 3.7–5.5 | α ~ 20−30, δ < 90 | ? | SS | – | + | + | – | (Opher et al. 2009) |
| >4.0 | α ~ 30, β = 0 | + | SS | – | + | + | – | (Pogorelov et al. 2009) |
| 3.0 | (224, 41)° | ? | SS | – | – | – | + | (Heerikhuisen et al. 2010) |
| 4.4 | α ~ 20 | ? | SS | – | – | – | + | (Chalov et al. 2010) |
| 3.0 ± 1.0 | (225,35) ± 5° | – | SS | – | – | – | + | (Grygorczuk et al. 2011) |
| 2.4 ± 0.3 | (227,35) ± 7° | + | NS | – | – | + | + | (Strumik et al. 2011) |
| 2–3 | (220–224, 39–44)° | + | SS | + | – | – | + | (Heerikhuisen & Pogorelov 2011) |
| ≥ 3.0 | α = 45° | + | NS | – | – | – | + | (McComas et al. 2012) |
| 2.2 ± 0.1 | (224,36) ± 3° | + | NS | + | + | + | + | This work |
Notes. α is angle between inflow V∞ and magnetic field B∞ vectors. β is angle from HDP plane. For all references except McComas et al. (2012), the HDP was defined by Lallement et al. (2010). The ISM direction, speed, plasma temperature, and HDP orientation have different values in McComas et al. (2012). Coordinates are ecliptic. BSW is the interplanetary magnetic field. δ is the angle between the BV plane and the Sun’s equatorial plane (noted β in Opher et al. 2009). Lyman-α corresponds either to Voyagers or to SOHO/SWAN ultraviolet observations. V1 and V2 correspond to plasma and field in situ measurements. IBEX corresponds to the ENA ribbon observations. SS is for spherical symmetric solar wind flow and NS is for non-spherical symmetric.
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