Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Israel, Holger"'
Autor:
George, Koshy, Vassallo, Thomas, Mohr, Joseph, Mirkazemi, Mohammad, Israel, Holger, de Jong, Jelte T. A., Kleijn, Gijs A. Verdoes
The calibration of ground based optical imaging data to photometric accuracy of 10 mmag over the full survey area and to color uniformity better than 5 mmag on the scale of the VIS focal plane is a key science requirement for the Euclid mission. Thes
Externí odkaz:
http://arxiv.org/abs/2001.03987
Autor:
Klein, Matthias, Israel, Holger, Nagarajan, Aarti, Bertoldi, Frank, Pacaud, Florian, Lee, Adrian T., Sommer, Martin, Basu, Kaustuv
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 2019, Volume 488, Issue 2, p.1704-1727
We present a weak lensing analysis for galaxy clusters from the APEX-SZ survey. For $39$ massive galaxy clusters that were observed via the Sunyaev-Zel\textquotesingle dovich effect (SZE) with the APEX telescope, we analyse deep optical imaging data
Externí odkaz:
http://arxiv.org/abs/1908.10114
Autor:
Hollowood, Devon L., Jeltema, Tesla, Chen, Xinyi, Farahi, Arya, Evrard, August, Everett, Spencer, Rozo, Eduardo, Rykoff, Eli, Bernstein, Rebecca, Bermeo, Alberto, Eiger, Lena, Giles, Paul, Israel, Holger, Michel, Renee, Noorali, Raziq, Romer, Kathy, Rooney, Philip, Splettstoesser, Megan
In order to place constraints on cosmology through optical surveys of galaxy clusters, one must first understand the properties of those clusters. To this end, we introduce the Mass Analysis Tool for Chandra (MATCha), a pipeline which uses a parallel
Externí odkaz:
http://arxiv.org/abs/1808.06637
Autor:
Massey, Richard, Harvey, David, Liesenborgs, Jori, Richard, Johan, Stach, Stuart, Swinbank, Mark, Taylor, Peter, Williams, Liliya, Clowe, Douglas, Courbin, Frederic, Edge, Alastair, Israel, Holger, Jauzac, Mathilde, Joseph, Remy, Jullo, Eric, Kitching, Thomas D., Leonard, Adrienne, Merten, Julian, Nagai, Daisuke, Nightingale, James, Robertson, Andrew, Romualdez, Luis Javier, Saha, Prasenjit, Smit, Renske, Tam, Sut Ieng, Tittley, Eric
We present integral field spectroscopy of galaxy cluster Abell 3827, using ALMA and VLT/MUSE. It reveals an unusual configuration of strong gravitational lensing in the cluster core, with at least seven lensed images of a single background spiral gal
Externí odkaz:
http://arxiv.org/abs/1708.04245
The shapes of galaxies can be quantified by ratios of their quadrupole moments. For faint galaxies, observational noise can make the denominator close to zero, so the ratios become ill-defined. Knowledge of these ratios (i.e. their measured standard
Externí odkaz:
http://arxiv.org/abs/1512.05591
Autor:
Eckert, Dominique, Jauzac, Mathilde, Shan, HuanYuan, Kneib, Jean-Paul, Erben, Thomas, Israel, Holger, Jullo, Eric, Klein, Matthias, Massey, Richard, Richard, Johan, Tchernin, Celine
Observations of the cosmic microwave background indicate that baryons account for 5% of the Universe's total energy content. In the local Universe, the census of all observed baryons falls short of this estimate by a factor of two. Cosmological simul
Externí odkaz:
http://arxiv.org/abs/1512.00454
Autor:
Israel, Holger, Massey, Richard, Prod'homme, Thibaut, Cropper, Mark, Cordes, Oliver, Gow, Jason, Kohley, Ralf, Marggraf, Ole, Niemi, Sami, Rhodes, Jason, Short, Alex, Verhoeve, Peter
Radiation damage to space-based Charge-Coupled Device (CCD) detectors creates defects which result in an increasing Charge Transfer Inefficiency (CTI) that causes spurious image trailing. Most of the trailing can be corrected during post-processing,
Externí odkaz:
http://arxiv.org/abs/1506.07831
Autor:
Massey, Richard, Williams, Liliya, Smit, Renske, Swinbank, Mark, Kitching, Thomas, Harvey, David, Jauzac, Mathilde, Israel, Holger, Clowe, Douglas, Edge, Alastair, Hilton, Matt, Jullo, Eric, Leonard, Adrienne, Liesenborgs, Jori, Merten, Julian, Mohammed, Irshad, Nagai, Daisuke, Richard, Johan, Robertson, Andrew, Saha, Prasenjit, Santana, Rebecca, Stott, John, Tittley, Eric
Publikováno v:
MNRAS 449 (2015) 3393
Galaxy cluster Abell 3827 hosts the stellar remnants of four almost equally bright elliptical galaxies within a core of radius 10kpc. Such corrugation of the stellar distribution is very rare, and suggests recent formation by several simultaneous mer
Externí odkaz:
http://arxiv.org/abs/1504.03388
Autor:
Clark, Paul, Massey, Richard, Chang, Herrick L., Galloway, Mathew, Israel, Holger, Jones, Laura L., Li, Lun, Mandic, Milan, Morris, Tim, Netterfield, Barth, Peacock, John, Sharples, Ray, Susca, Sara
We report results obtained during the characterization of a commercial front-illuminated progressive scan interline transfer CCD camera. We demonstrate that the unmodified camera operates successfully in temperature and pressure conditions (-40C, 4mB
Externí odkaz:
http://arxiv.org/abs/1408.6529
The mass of galaxy clusters can be inferred from the temperature of their X-ray emitting gas, $T_{\mathrm{X}}$. Their masses may be underestimated if it is assumed that the gas is in hydrostatic equilibrium, by an amount $b^{\mathrm{hyd}}\sim(20\pm10
Externí odkaz:
http://arxiv.org/abs/1408.4758