Thursday. Institute Christmas party! I know I'm in a skit somewhere.
1112.1404
Verifying the no-hair property of massive compact objects with intermediate-mass-ratio inspirals in advanced gravitational-wave detectors
Rodriguez, Mandel, Gair
* no-hair theorem: Only mass, spin and charge can be seen outside of a BH. All other information ("hairs") are hidden.
Gravitational waves from stellar-mass NS or BH into a IMBH (1:10 or 1:100 mass ratio) may be detectable to a few tens per year by advanced LIGO/Virgo, and will encode signature of the central body's spacetime. Direct observation of the spacetime will allow usage of "no-hair" theorem of GR to determine if the IMBH is a Kerr BH (or something more exotic, such as a boson star). Using post-Newtonian waveforms, explore prospects for constraining the central body's mass-quadrupole moment. Use FIsher information matrix to estimate accuracy the parameter measurements. Find that: for favorable mass and spin combinations, the quadrupole moment of non-Kerr central body can be measured to within a 15% fractional error or better using 3.5 pN order waveforms; accuracy decreases to 100% fractional error using 2 pN waveforms.
1112.1416
A new probe of the distribution of DM in galaxies
Chakrabarti
Disturbances in the extended atomic hydrogen gas disks of galaxies can be used to infer the scale radius of DM haloes. Primary metric: phase of the m=1 mode of disturbance in the outskirts of the gas disk, produced by a tidal interaction.
1112.1417
Nuclear mid-infrared properties of newby low-luminosity AGN
Asmus, Hönig, Gandhi, Smette, Duschl
MIR observations of 20 nearby low-luminosity AGN (LLAGN). Even at low luminosities and accretion rates, nuclear MIR emission present in most objects--thermal emission from a dusty torus.
1112.1418
Detecting the warm-hot intergalactic medium through x-ray absorption lines
Yao, Shull, Wang, Cash
The WHIM at temperatures 1e5-1e7 K is believed to contain 30-50% of the baryons in the local universe. Future observation requirements.
1112.1419
The cluster of blue stars surrounding the M31 nuclear black hole
Lauer, Bender, Kormandy, Rosenfield, Green
Like the MW, M31 harbors a BH closely surrounded by apparently young stars.
1112.1430
Mass functions of SMBH across cosmic time
Kelly, Merloni
Discuss methods for estimating the BH mass function; review results of using these methods for estimating the mass functions of both active and inactive BHs. Review current theoretical models for the growth of SMBH that predict the BH mass function. Conclude with a discussion of directions for future research.
1112.1461
The connection between 3.3 um PAH emission and AGN activity
Woo, Kim, Imanishi, Park
PAH emission detected for 7/26 z~0.4 AGN galaxies. Investigate connection between nuclear starburst and AGN activity--unlike global star formation, starburst and AGN activity are directly connected at the nuclear region.
1112.1495
Modeling of WL statistics: II. Configuration-space statistics
Valageas, Sato, Nishimichi
Model combining perturbation theory with halo models as an analytic model of 3d matter distribution, for WL configuration-space statistics. Find better agreement with simulations than published fitting formulas. Recovers dependence on cosmology. Obtain quantitative relationship between integrated WL statistics and the various contributions to the 3d density fluctuations.
* I should read this paper.
1112.1599
Comparison of pressure profiles of massive relaxed galaxy clusters using SZ and X-ray data
Bonamente, ... Carlstrom, ... et al
Find integrated pressures measured from X-ray and SZ data consistent, in agreement with WMAP and Planck data, confirming SZ and X-ray observations of massive clusters detect the same amount of thermal pressure from the intra-cluster medium. Find consistency with universal pressure profile proposed by Arnaud (2010) out to r500 in pressure profiles, and integrated pressures.
1112.1666
Is there are flatness problem in classical cosmology?
Helbig
No there isn't, not for any FL models. [why?]
No comments:
Post a Comment