BICEP / Keck XVI: Characterizing Dust Polarization through Correlations with Neutral Hydrogen
BICEP / Keck XVI: Characterizing Dust Polarization through Correlations with Neutral Hydrogen
We characterize Galactic dust filaments by correlating BICEP/Keck and Planck data with polarization templates based on neutral hydrogen (H I) observations. Dust polarization is important for both our understanding of astrophysical processes in the interstellar medium (ISM) and the search for primordial gravitational waves in the cosmic microwave background (CMB). In the diffuse ISM, H I is strongly correlated with the dust and partly organized into filaments that are aligned with the local magnetic field. We analyze the deep BICEP/Keck data at 95, 150, and 220 GHz, over the low-column-density region of sky where BICEP/Keck has set the best limits on primordial gravitational waves. We separate the H I emission into distinct velocity components and detect dust polarization correlated with the local Galactic H I but not with the H I associated with Magellanic Stream I. We present a robust, multifrequency detection of polarized dust emission correlated with the filamentary H I morphology template down to 95 GHz. For assessing its utility for foreground cleaning, we report that the H I morphology template correlates in B modes at a $\sim$10-65$\%$ level over the multipole range $20 < \ell < 200$ with the BICEP/Keck maps, which contain contributions from dust, CMB, and noise components. We measure the spectral index of the filamentary dust component spectral energy distribution to be $\beta = 1.54 \pm 0.13$. We find no evidence for decorrelation in this region between the filaments and the rest of the dust field or from the inclusion of dust associated with the intermediate velocity H I. Finally, we explore the morphological parameter space in the H I-based filamentary model.
V. Buza、M. Eiben、R. Schwarz、K. S. Karkare、A. Schillaci、K. L. Thompson、L. Zeng、J. Willmert、T. Namikawa、S. E. Clark、R. O'Brient、B. Singari、K. G. Megerian、A. Lennox、J. M. Kovac、M. Dierickx、R. V. Sudiwala、G. Halal、N. Goeckner-Wald、M. Halpern、K. D. Irwin、J. Grayson、L. Minutolo、R. W. Ogburn IV、J. Connors、M. Amiri、B. L. Schmitt、M. Crumrine、C. A. Bischoff、K. W. Yoon、K. Lau、S. Fatigoni、C. Zhang、T. Prouve、E. Hand、E. Karpel、L. Duband、C. Yu、C. Verges、C. D. Reintsema、G. P. Teply、H. Boenish、J. R. Cheshire IV、BICEP/Keck Collaboration、J. E. Tolan、H. Hui、A. Soliman、C. D. Sheehy、C. L. Wong、S. Zhang、S. Kefeli、G. Hall、J. Kang、E. V. Denison、A. D. Turner、M. A. Petroff、S. Fliescher、L. Moncelsi、C. Pryke、Z. Ahmed、S. Palladino、D. C. Goldfinger、A. Wandui、D. V. Wiebe、C. Umilta、S. Richter、C. L. Kuo、A. C. Weber、E. Young、R. Basu Thakur、P. A. R. Ade、W. L. K. Wu、S. Henderson、Y. Nakato、D. Barkats、C. Tucker、J. Cornelison、J. P. Filippini、S. Harrison、T. St Germaine、C. Giannakopoulos、P. Grimes、B. Steinbach、:、E. M. Leitch、J. Hubmayr、A. G. Vieregg、E. Bullock、H. T. Nguyen、D. Beck、S. R. Hildebrandt、J. J. Bock、S. A. Kernasovskiy、H. Yang、A. Cukierman、B. Racine
University of ChicagoHarvard/CfAUniversity of MinnesotaHarvard/CfACaltechStanford UniversityHarvard/CfAUniversity of MinnesotaThe University of TokyoKIPAC/SLACCaltechMinnesota Institute for AstrophysicsNASA JPLUniversity of Illinois at Urbana-ChampaignHarvard/CfAHarvard/CfACardiff UniversityStanford UniversityStanford UniversityUniversity of British ColumbiaStanford UniversityStanford UniversityCaltechStanford UniversityHarvard/CfAUniversity of British ColumbiaHarvard/CfAUniversity of MinnesotaUniversity of CincinnatiStanford UniversityUniversity of MinnesotaUniversity of British ColumbiaCaltechSBT GrenobleUniversity of CincinnatiStanford UniversitySBT GrenobleStanford UniversityHarvard/CfANISTCaltechHarvard/CfAMinnesota Institute for AstrophysicsCardiff UniversityStanford UniversityCaltechCaltechBrookhaven National LaboratoryHarvard/CfACaltechCaltechUniversity of MinnesotaStanford UniversityNISTNASA JPLHarvard/CfAUniversity of MinnesotaCaltechUniversity of MinnesotaKIPAC/SLACUniversity of CincinnatiHarvard/CfACaltechUniversity of British ColumbiaUniversity of CincinnatiHarvard/CfAStanford UniversityNASA JPLStanford UniversityCaltechCardiff UniversityKIPAC/SLACKIPAC/SLACStanford UniversityHarvard/CfACardiff UniversityHarvard/CfAUniversity of Illinois at Urbana-ChampaignHarvard/CfAHarvard/CfAUniversity of CincinnatiHarvard/CfACaltechCardiff UniversityUniversity of ChicagoNISTUniversity of ChicagoMinnesota Institute for AstrophysicsNASA JPLKIPAC/SLACCaltechCaltechStanford UniversityStanford UniversityStanford UniversityHarvard/CfA
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V. Buza,M. Eiben,R. Schwarz,K. S. Karkare,A. Schillaci,K. L. Thompson,L. Zeng,J. Willmert,T. Namikawa,S. E. Clark,R. O'Brient,B. Singari,K. G. Megerian,A. Lennox,J. M. Kovac,M. Dierickx,R. V. Sudiwala,G. Halal,N. Goeckner-Wald,M. Halpern,K. D. Irwin,J. Grayson,L. Minutolo,R. W. Ogburn IV,J. Connors,M. Amiri,B. L. Schmitt,M. Crumrine,C. A. Bischoff,K. W. Yoon,K. Lau,S. Fatigoni,C. Zhang,T. Prouve,E. Hand,E. Karpel,L. Duband,C. Yu,C. Verges,C. D. Reintsema,G. P. Teply,H. Boenish,J. R. Cheshire IV,BICEP/Keck Collaboration,J. E. Tolan,H. Hui,A. Soliman,C. D. Sheehy,C. L. Wong,S. Zhang,S. Kefeli,G. Hall,J. Kang,E. V. Denison,A. D. Turner,M. A. Petroff,S. Fliescher,L. Moncelsi,C. Pryke,Z. Ahmed,S. Palladino,D. C. Goldfinger,A. Wandui,D. V. Wiebe,C. Umilta,S. Richter,C. L. Kuo,A. C. Weber,E. Young,R. Basu Thakur,P. A. R. Ade,W. L. K. Wu,S. Henderson,Y. Nakato,D. Barkats,C. Tucker,J. Cornelison,J. P. Filippini,S. Harrison,T. St Germaine,C. Giannakopoulos,P. Grimes,B. Steinbach,:,E. M. Leitch,J. Hubmayr,A. G. Vieregg,E. Bullock,H. T. Nguyen,D. Beck,S. R. Hildebrandt,J. J. Bock,S. A. Kernasovskiy,H. Yang,A. Cukierman,B. Racine.BICEP / Keck XVI: Characterizing Dust Polarization through Correlations with Neutral Hydrogen[EB/OL].(2022-10-11)[2025-08-02].https://arxiv.org/abs/2210.05684.点此复制
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