Z1548.ppt

Z1548.ppt

Z1548.ppt

Laboratory for Extraterrestrial Physics/692A new stream of interstellar gas

• We interpret the LENA data as evidence of a new stream of interstellar gas.

• The presence of such a stream is being tested and confirmed by other data sets, each the subject of one or more papers:• Neutral solar wind flux

(IMAGE) [Collier et al. 2001]

• Cyclotron waves (ISEE, Wind) [Collier et al., 2002]

• He+ pickup ion observations (ACE)

• X-rays from solar wind interactions (ROSAT)

104

105

106

0.0

1.0

2.0

3.0

4.0

5.0

0 50 100 150 200 250 300 350

NSW fluxISEE-3/Wind Wave EventsISN rate (+1/2 year)ACE/SWICS He+ (+1/2 year) EHA flux

NSW flux/ISN rate/He+ counts in seconday peak

(H atoms/cm

2

/s or counts/spin or counts/15.5 days)

differential flux of 55-80 keV EHA

(x10-4

cm2

sr s keV)

-1

day of year

upstreamdirection

approx. centerof 6 data sets

[Collier et al., Adv. Space Res., in press, 2003].