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Numerical Atlas
Name
Case-insensitive
Case-sensitive
Suggested:
proton fractions
,
proton fraction range
,
primordial helium abundance
,
proton fraction
,
primordial helium mass fraction
Symbol
Unit
Suggested:
Dimensionless
Lower Bound
Upper Bound
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arXiv ID
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Symbol: Y _ { P }
Mean: 0.274 ± 0.241
Median: 0.245
Range: 0 ‒ 1.3
25 results.
Download Data (CSV)
arXiv
Name
Symbol
Parsed
Bound
astro-ph/9901157
🔍
(source)
^ { 4 } He abundance
Y _ { P }
0.246 ± 0.0014
astro-ph/0012088
🔍
(source)
proton fraction
Y _ { P }
0.1776
astro-ph/0112064
🔍
(source)
Y _ { P }
0.26
astro-ph/0112064
🔍
(source)
Y _ { P }
0.235
+0.0050000000000000044
-0.004999999999999977
astro-ph/0112064
🔍
(source)
Y _ { P }
0.26
Upper
astro-ph/0303076
🔍
(source)
Y _ { P }
0.2458
Lower
astro-ph/0303076
🔍
(source)
Y _ { P }
0.2471
Upper
astro-ph/0304152
🔍
(source)
Y _ { P }
0.2391 ± 0.002
astro-ph/0310699
🔍
(source)
primordial ^ { 4 } He mass fraction
Y _ { P }
0.00013000000000000002
1003.5942
🔍
(source)
primordial helium abundance
Y _ { P }
0.245
1004.0228
🔍
(source)
proton fraction range
Y _ { P }
0.0
1006.0489
🔍
(source)
proton fraction range
Y _ { P }
0.05
1009.0866
🔍
(source)
Y _ { P }
0.313 ± 0.044
1101.3715
🔍
(source)
proton fraction range
Y _ { P }
0.56
1312.7706
🔍
(source)
4 } He
Y _ { P }
0.254 ± 0.003
1412.8502
🔍
(source)
proton fractions
Y _ { P }
0.05
1412.8502
🔍
(source)
proton fractions
Y _ { P }
0.1
1412.8502
🔍
(source)
proton fractions
Y _ { P }
0.2
1412.8502
🔍
(source)
proton fractions
Y _ { P }
0.3
1412.8502
🔍
(source)
proton fractions
Y _ { P }
0.4
1412.8502
🔍
(source)
proton fractions
Y _ { P }
0.2
1608.02062
🔍
(source)
mass
Y _ { P }
0.2446 ± 0.0029
1904.01594
🔍
(source)
primordial helium abundance
Y _ { P }
0.2451 ± 0.0026
1905.05102
🔍
(source)
primordial helium abundance
Y _ { P }
0.2451 ± 0.0026
2005.12290
🔍
(source)
primordial helium mass fraction
Y _ { P }
0.2436
+0.0039
-0.004