the royal high school, bath marina ivon kaat michela image (courtesy of the hubble space telescope):...
TRANSCRIPT
The Royal High School, BathMarina Ivon Kaat Michela
Image (Courtesy of the Hubble Space Telescope): HST Mystic Mountain, Carina Nebula.
Does the Sun affect cosmic ray detection?
Confidence intervals were added to show the range of uncertainty in the data values.
The number of cosmic ray events detected are at a minimum at noon.
RHS: Trend is present with 95% confidence.
Station 305: Trend is present with 99% confidence.
Supporting Evidence for Hypothesis
RHS
Station 305
Their Conclusion
Their evidence supports their hypothesis which states that the Sun may have a blocking effect on cosmic ray detection is a viable theory .
Images are featured in this presentation in courtesy ofWikipedia, Google Images and the Hubble Space Telescope.
Our Research
Using the examples set by the previous students, we moved on to find further evidence for the hypothesis that the blocking effect is indeed coming from the Sun.
Characteristics of Cosmic Ray Showers
They came from the same particle
They travel in parallelEnough energy to travel
close to speed of light
Angle of Incidence
t= 2.5 x 10 s⁻⁹c= 3 x 10 m/s⁸ct= 0.75 m
6 mDetector 1 Detector 2
ct
c t
0.75 m
cosα = 0.75 / 6cosα = 0.125α = 83°
α = cos⁻1((c*t)/6)
α
0
0 - 2
8
29 -
42
42 -
52
52 -
61
61 -
68
68 -
76
76 -
83
83 -
97
97 -
104
104
-112
112
- 120
120
- 128
128
- 138
138
- 151
151
- 180
0
200
400
600
800
1000
1200
1400
Average number of cosmic rays from different angles
angle
aver
age
num
ber o
f cos
mic
rays
Solid angle…A fraction of the surface of a
sphere that a particular object covers… which is measured in
steradians
Solid angle of half a cone…
π (1-cos ө)
Solid angle of a pyramid…
4 (sin 1⁻ (sin sin ))
0
0 - 2
8
29 -
42
42 -
52
52 -
61
61 -
68
68 -
76
76 -
83
83 -
97
97 -
104
104
-112
112
- 120
120
- 128
128
- 138
138
- 151
151
- 180
0
200
400
600
800
1000
1200
1400
Average number of cosmic rays from different angles
angle
aver
age
num
ber o
f cos
mic
rays