astro-legacy-archive/capmap-bandpowers

CAPMAP band powers

The preview plots the released EE and BB values from bischoff_table2 against l, with the source multipole ranges and first quoted uncertainties.

This dataset contains the two CAPMAP band-power and BB-limit tables served by LAMBDA. The current product table serves no map file. Each configuration is its source filename stem, every numeric value is float64, and source row and column order are preserved.

How to use

from datasets import load_dataset
dataset = load_dataset("astro-legacy-archive/capmap-bandpowers", "bischoff_table2", split="train[:1]", columns=["band", "EE"])
print(dataset[0]["band"], dataset[0]["EE"])

1.0 9.0

import json
from huggingface_hub import hf_hub_download
import pyarrow.parquet as pq
path = hf_hub_download("astro-legacy-archive/capmap-bandpowers", "bischoff_table2.parquet", repo_type="dataset")
print(json.loads(pq.read_schema(path).metadata[b"statistical_product"])["row_count"])

7

Dataset structure

Both configurations contain seven rows and carry statistical-product schema 1.2.0. bischoff_table2 retains its ten published identifiers:

column	unit	meaning
band	dimensionless	band number
l	dimensionless	multipole
dl_pos	dimensionless	upper end of multipole band is l+dl_pos
dl_neg	dimensionless	lower end of multipole band is l-dl_neg
EE	uK^2	EE power
e1_EE	uK^2	lower error of EE power
e2_EE	uK^2	upper error of EE power
BB	uK^2	BB power
e1_BB	uK^2	lower error of BB power
e2_BB	uK^2	upper error of BB power

The values are maximum-likelihood flat band powers with 68% confidence intervals. The listed multipole bands apply to EE; the BB bands differ only slightly. The errors are statistical only.

The unlabeled CAPMAP_95pc_BB_limits table retains Column 1, Column 2, and Column 3: minimum multipole, maximum multipole, and the 95% confidence upper limit on l(l+1)C_l^BB/(2pi) in uK^2. The pinned source states no units for the first two columns; none are inferred.

The embedded metadata records every field description and source basis, the complete ASCII header, source row order, measurement-to-uncertainty links, and python tools/make_capmap_bandpowers.py as the regeneration command. Its canonical ASCII reconstruction preserves source column order, dtype, shape, values, and the header verbatim; numeric whitespace and decimal formatting are outside that promise.

Sources, licence, and citation

HEASARC states verbatim:

HEASARC materials are all available freely for your use.

This is a free-use statement rather than a named formal licence.

The release index is the CAPMAP product table. The pinned inputs checked on 2026-08-30 are:

source	bytes	SHA-256
bischoff_table2.txt	1,925	9d611ee077ccabcee14e80abc23daff045520a7d5e7f9e490d3e98473247e7e8
CAPMAP_95pc_BB_limits.dat	391	f4646121f78e004bcc3bc87c33f8ab1fbb6236b9055425336da4656d622c74e5

The checked capmap_bp_info.html document is 10,588 bytes with SHA-256 568c61a59a9c14dfe35871e5db85dacce6cd9a3f6317cd44739ad79260393908.

No explicit licence is published. Credit, verbatim: “No requested credit line is published.” Cite Bischoff et al. (2008), ApJ 684, 771.