Cross-correlation of gravitational lensing from DES Science Verification data with SPT and Planck lensing
Abstract
We measure the cross-correlation between weak lensing of galaxy images and of the cosmic microwave background (CMB). The effects of gravitational lensing on different sources will be correlated if the lensing is caused by the same mass fluctuations. We use galaxy shape measurements from 139 deg$$^{2}$$ of the Dark Energy Survey (DES) Science Verification data and overlapping CMB lensing from the South Pole Telescope (SPT) and Planck. The DES source galaxies have a median redshift of $$z_{\rm med} {\sim} 0.7$$, while the CMB lensing kernel is broad and peaks at $$z{\sim}2$$. The resulting cross-correlation is maximally sensitive to mass fluctuations at $$z{\sim}0.44$$. Assuming the Planck 2015 best-fit cosmology, the amplitude of the DES$$\times$$SPT cross-power is found to be $$A = 0.88 \pm 0.30$$ and that from DES$$\times$$Planck to be $$A = 0.86 \pm 0.39$$, where $A=1$ corresponds to the theoretical prediction. These are consistent with the expected signal and correspond to significances of $$2.9 \sigma$$ and $$2.2 \sigma$$ respectively. We demonstrate that our results are robust to a number of important systematic effects including the shear measurement method, estimator choice, photometric redshift uncertainty and CMB lensing systematics. Significant intrinsic alignment of galaxy shapes would increase the cross-correlation signal inferred from the data; we calculate a value of $$A = 1.08 \pm 0.36$$ for DES$$\times$$SPT when we correct the observations with a simple IA model. With three measurements of this cross-correlation now existing in the literature, there is not yet reliable evidence for any deviation from the expected LCDM level of cross-correlation, given the size of the statistical uncertainties and the significant impact of systematic errors, particularly IAs. We provide forecasts for the expected signal-to-noise of the combination of the five-year DES survey and SPT-3G.
- Authors:
- more »
- Publication Date:
- Research Org.:
- Univ. of Illinois at Urbana-Champaign, IL (United States); The Ohio State Univ., Columbus, OH (United States); Argonne National Laboratory (ANL), Argonne, IL (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Org.:
- DES Collaboration
- OSTI Identifier:
- 1594617
- Alternate Identifier(s):
- OSTI ID: 1244519
- Report Number(s):
- FERMILAB-PUB-15-586-E; arXiv:1512.04535
Journal ID: ISSN 0035-8711; TRN: US2101744
- Grant/Contract Number:
- SC0015640; SC0011726; AC02-07CH11359
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Monthly Notices of the Royal Astronomical Society
- Additional Journal Information:
- Journal Volume: 459; Journal Issue: 1; Journal ID: ISSN 0035-8711
- Publisher:
- Royal Astronomical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; gravatational lensing: weak methods: data analysis; cosmic background radiation
Citation Formats
Kirk, D., Omori, Y., Benoit-Lévy, A., Cawthon, R., Chang, C., Larsen, P., Amara, A., Bacon, D., Crawford, T. M., Dodelson, S., Fosalba, P., Giannantonio, T., Holder, G., Jain, B., Kacprzak, T., Lahav, O., MacCrann, N., Nicola, A., Refregier, A., Sheldon, E., Story, K. T., Troxel, M. A., Vieira, J. D., Vikram, V., Zuntz, J., Abbott, T. M. C., Abdalla, F. B., Becker, M. R., Benson, B. A., Bernstein, G. M., Bernstein, R. A., Bleem, L. E., Bonnett, C., Bridle, S. L., Brooks, D., Buckley-Geer, E., Burke, D. L., Capozzi, D., Carlstrom, J. E., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Crocce, M., Cunha, C. E., D'Andrea, C. B., da Costa, L. N., Desai, S., Diehl, H. T., Dietrich, J. P., Doel, P., Eifler, T. F., Evrard, A. E., Flaugher, B., Frieman, J., Gerdes, D. W., Goldstein, D. A., Gruen, D., Gruendl, R. A., Honscheid, K., James, D. J., Jarvis, M., Kent, S., Kuehn, K., Kuropatkin, N., Lima, M., March, M., Martini, P., Melchior, P., Miller, C. J., Miquel, R., Nichol, R. C., Ogando, R., Plazas, A. A., Reichardt, C. L., Roodman, A., Rozo, E., Rykoff, E. S., Sako, M., Sanchez, E., Scarpine, V., Schubnell, M., Sevilla-Noarbe, I., Simard, G., Smith, R. C., Soares-Santos, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Thomas, D., Wechsler, R. H., and Weller, J. Cross-correlation of gravitational lensing from DES Science Verification data with SPT and Planck lensing. United States: N. p., 2016.
Web. doi:10.1093/mnras/stw570.
Kirk, D., Omori, Y., Benoit-Lévy, A., Cawthon, R., Chang, C., Larsen, P., Amara, A., Bacon, D., Crawford, T. M., Dodelson, S., Fosalba, P., Giannantonio, T., Holder, G., Jain, B., Kacprzak, T., Lahav, O., MacCrann, N., Nicola, A., Refregier, A., Sheldon, E., Story, K. T., Troxel, M. A., Vieira, J. D., Vikram, V., Zuntz, J., Abbott, T. M. C., Abdalla, F. B., Becker, M. R., Benson, B. A., Bernstein, G. M., Bernstein, R. A., Bleem, L. E., Bonnett, C., Bridle, S. L., Brooks, D., Buckley-Geer, E., Burke, D. L., Capozzi, D., Carlstrom, J. E., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Crocce, M., Cunha, C. E., D'Andrea, C. B., da Costa, L. N., Desai, S., Diehl, H. T., Dietrich, J. P., Doel, P., Eifler, T. F., Evrard, A. E., Flaugher, B., Frieman, J., Gerdes, D. W., Goldstein, D. A., Gruen, D., Gruendl, R. A., Honscheid, K., James, D. J., Jarvis, M., Kent, S., Kuehn, K., Kuropatkin, N., Lima, M., March, M., Martini, P., Melchior, P., Miller, C. J., Miquel, R., Nichol, R. C., Ogando, R., Plazas, A. A., Reichardt, C. L., Roodman, A., Rozo, E., Rykoff, E. S., Sako, M., Sanchez, E., Scarpine, V., Schubnell, M., Sevilla-Noarbe, I., Simard, G., Smith, R. C., Soares-Santos, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Thomas, D., Wechsler, R. H., & Weller, J. Cross-correlation of gravitational lensing from DES Science Verification data with SPT and Planck lensing. United States. https://doi.org/10.1093/mnras/stw570
Kirk, D., Omori, Y., Benoit-Lévy, A., Cawthon, R., Chang, C., Larsen, P., Amara, A., Bacon, D., Crawford, T. M., Dodelson, S., Fosalba, P., Giannantonio, T., Holder, G., Jain, B., Kacprzak, T., Lahav, O., MacCrann, N., Nicola, A., Refregier, A., Sheldon, E., Story, K. T., Troxel, M. A., Vieira, J. D., Vikram, V., Zuntz, J., Abbott, T. M. C., Abdalla, F. B., Becker, M. R., Benson, B. A., Bernstein, G. M., Bernstein, R. A., Bleem, L. E., Bonnett, C., Bridle, S. L., Brooks, D., Buckley-Geer, E., Burke, D. L., Capozzi, D., Carlstrom, J. E., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Crocce, M., Cunha, C. E., D'Andrea, C. B., da Costa, L. N., Desai, S., Diehl, H. T., Dietrich, J. P., Doel, P., Eifler, T. F., Evrard, A. E., Flaugher, B., Frieman, J., Gerdes, D. W., Goldstein, D. A., Gruen, D., Gruendl, R. A., Honscheid, K., James, D. J., Jarvis, M., Kent, S., Kuehn, K., Kuropatkin, N., Lima, M., March, M., Martini, P., Melchior, P., Miller, C. J., Miquel, R., Nichol, R. C., Ogando, R., Plazas, A. A., Reichardt, C. L., Roodman, A., Rozo, E., Rykoff, E. S., Sako, M., Sanchez, E., Scarpine, V., Schubnell, M., Sevilla-Noarbe, I., Simard, G., Smith, R. C., Soares-Santos, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Thomas, D., Wechsler, R. H., and Weller, J. Thu .
"Cross-correlation of gravitational lensing from DES Science Verification data with SPT and Planck lensing". United States. https://doi.org/10.1093/mnras/stw570. https://www.osti.gov/servlets/purl/1594617.
@article{osti_1594617,
title = {Cross-correlation of gravitational lensing from DES Science Verification data with SPT and Planck lensing},
author = {Kirk, D. and Omori, Y. and Benoit-Lévy, A. and Cawthon, R. and Chang, C. and Larsen, P. and Amara, A. and Bacon, D. and Crawford, T. M. and Dodelson, S. and Fosalba, P. and Giannantonio, T. and Holder, G. and Jain, B. and Kacprzak, T. and Lahav, O. and MacCrann, N. and Nicola, A. and Refregier, A. and Sheldon, E. and Story, K. T. and Troxel, M. A. and Vieira, J. D. and Vikram, V. and Zuntz, J. and Abbott, T. M. C. and Abdalla, F. B. and Becker, M. R. and Benson, B. A. and Bernstein, G. M. and Bernstein, R. A. and Bleem, L. E. and Bonnett, C. and Bridle, S. L. and Brooks, D. and Buckley-Geer, E. and Burke, D. L. and Capozzi, D. and Carlstrom, J. E. and Rosell, A. Carnero and Kind, M. Carrasco and Carretero, J. and Crocce, M. and Cunha, C. E. and D'Andrea, C. B. and da Costa, L. N. and Desai, S. and Diehl, H. T. and Dietrich, J. P. and Doel, P. and Eifler, T. F. and Evrard, A. E. and Flaugher, B. and Frieman, J. and Gerdes, D. W. and Goldstein, D. A. and Gruen, D. and Gruendl, R. A. and Honscheid, K. and James, D. J. and Jarvis, M. and Kent, S. and Kuehn, K. and Kuropatkin, N. and Lima, M. and March, M. and Martini, P. and Melchior, P. and Miller, C. J. and Miquel, R. and Nichol, R. C. and Ogando, R. and Plazas, A. A. and Reichardt, C. L. and Roodman, A. and Rozo, E. and Rykoff, E. S. and Sako, M. and Sanchez, E. and Scarpine, V. and Schubnell, M. and Sevilla-Noarbe, I. and Simard, G. and Smith, R. C. and Soares-Santos, M. and Sobreira, F. and Suchyta, E. and Swanson, M. E. C. and Tarle, G. and Thomas, D. and Wechsler, R. H. and Weller, J.},
abstractNote = {We measure the cross-correlation between weak lensing of galaxy images and of the cosmic microwave background (CMB). The effects of gravitational lensing on different sources will be correlated if the lensing is caused by the same mass fluctuations. We use galaxy shape measurements from 139 deg$^{2}$ of the Dark Energy Survey (DES) Science Verification data and overlapping CMB lensing from the South Pole Telescope (SPT) and Planck. The DES source galaxies have a median redshift of $z_{\rm med} {\sim} 0.7$, while the CMB lensing kernel is broad and peaks at $z{\sim}2$. The resulting cross-correlation is maximally sensitive to mass fluctuations at $z{\sim}0.44$. Assuming the Planck 2015 best-fit cosmology, the amplitude of the DES$\times$SPT cross-power is found to be $A = 0.88 \pm 0.30$ and that from DES$\times$Planck to be $A = 0.86 \pm 0.39$, where $A=1$ corresponds to the theoretical prediction. These are consistent with the expected signal and correspond to significances of $2.9 \sigma$ and $2.2 \sigma$ respectively. We demonstrate that our results are robust to a number of important systematic effects including the shear measurement method, estimator choice, photometric redshift uncertainty and CMB lensing systematics. Significant intrinsic alignment of galaxy shapes would increase the cross-correlation signal inferred from the data; we calculate a value of $A = 1.08 \pm 0.36$ for DES$\times$SPT when we correct the observations with a simple IA model. With three measurements of this cross-correlation now existing in the literature, there is not yet reliable evidence for any deviation from the expected LCDM level of cross-correlation, given the size of the statistical uncertainties and the significant impact of systematic errors, particularly IAs. We provide forecasts for the expected signal-to-noise of the combination of the five-year DES survey and SPT-3G.},
doi = {10.1093/mnras/stw570},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 1,
volume = 459,
place = {United States},
year = {Thu Mar 10 00:00:00 EST 2016},
month = {Thu Mar 10 00:00:00 EST 2016}
}
Web of Science
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