Preprints

Flegal et al. discuss error estimation methods for MCMC computations.

Clifford Will notes that if there are stars in highly eccentric short period orbits (<~0.1 year) around Sgr A* they could be used to test the no-hair theorem. Cen & Fang show that GRBs may be biased tracers of star formation.

Eckert et al. use Integral IBIS imaging of the Coma cluster to find a hard X-ray source extending in the direction of the sub-cluster and co-incident with 1.4 GHz emission.

Ajith et al. construct a template bank for the GW signal from coalescing non-spinning BHs.

Ishak et al. show that gravitational lensing has a dependence on the cosmological constant and that current observations place an upper limit which is competitive with values determined from cosmology.

Davison & Sartori present their approach to the "Banff Challenge" of finding a signal in noisy particle physics data.

Dimopoulos et al. propose GW detection using atom interferometry which has the potential to be more sensitive than LIGO from the ground and LISA from space.

Preprints

Jasra et al. present a population-based Reversible Jump MCMC method and argue that it works better than other MCMC methods on high dimension problems.

Hardcastle et al. report on an accumulated 700ksec observation of the Cen A jet which shows that the outer part of the jet requires an as yet unknown distributed acceleration mechanism.

Gierlinski et al. argue that the high frequency end of the power density spectrum in the hard states of BH sources is invariant in shape and the amplitude provides an estimate of the mass.

Snowden et al. present a catolog of 70 XMM cluster observations with a detailed description of their handling of background.

Lang & Hughes investigate the ability of GW observations to localize a SMBH-SMBH merger.

Narayan et al. fit Novikov-Thorne thin disk models to X-ray transients in the thermal state and estimate black hole rotation rates.

Mahdavi et al. compare weak lensing and X-ray measures of mass and find evidence for non-thermal pressure support.

Bianchi et al. use XMM and optical observations of NGC3147 to show that it has no intrinsic X-ray absorption but also no optical broad lines.

Preprints

Franz discusses confidence regions on ratios.

Hague et al. discuss statistical tests for deviations from the power-law for the cosmic ray energy spectrum.

Lang & Hughes investigate the ability to localize SMBH mergers from the GW signal.

Comastri & Brusa review AGN results from X-ray surveys and their multiwavelength follow-up and consider that case for 2-3 Msec XMM survey.

Rapetti & Allen consider what it would take to use X-ray observations of cluster of galaxies to determine dark energy parameters with a precision comparable to other methods.

Brunetti et al estimate hard X-ray fluxes from clusters of galaxies and relate them to prospective observations with SIMBOL-X.

Preprints

Roelofs et al. derive parallaxes for a set of AM CVn binaries and predict LISA GW signals.

Dietrich et al. describe BLOX, a program to select galaxy clusters based on optical, X-ray and weak lensing shear.

Percival et al. measure the baryon oscillation signal at z=0.2 and z=0.35 using SDSS and 2dFGRS to constrain w=-1.004 +/- 0.089 for a flat model including the supernova and CMB constraints.

Wallin et al. place limits on deviations from Newtonian gravity in the outer Solar System through observations of the orbits of TNOs.

Markevitch points out that X-ray emission from clusters of galaxies depends on the He abundance in their cores which is unknown (and may be enhanced due to sedimentation). Combining SZ measurements with distances determined using other techniques can be used to estimate the He abundance.

Ruiter et al. calculate the LISA foreground due to mass-transferring binaries and find that it becomes significant at frequencies above ~7 mHz.

Bickel et al. develop methods for searching for periodicity in photon event times with application in the gamma-ray regime.

Prix & Whelan apply F-statistic methods developed for LIGO to the MLDC binary challenges.

Preprints

Jee et al. use weak-lensing analysis of Cl0024+17 and find a ring of dark matter which they interpret as the result of a high-velocity line-of-sight collision.

Tsalmantza et al. present the first results from a program to generate a library of synthetic galaxy spectra to be used to classify the several million unresolved galaxies whose spectra will be acquired by Gaia.

Wu & Wang calculate Fe K line shapes from relativistic accreting disks including the effects of self-shadowing.

Tornatore et al. use hydro simulations to investigate chemical evolution in clusters of galaxies.

Trimble et al. summarize astrophysics in 2006.

Padmanabhan reviews dark energy cosmology, argues that only a cosmological constant makes sense and that the problem cannot be satisfactorily solved at our current level of (mis)understanding.

Fiore et al. combine optical, IR, and X-ray observations of the Chandra Deep Field South to identify the Compton-thick AGN that have so far been missing from deep Chandra observations.

Kelly describes a Bayesian approach using Gaussian mixtures for linear regression in the presence of measurement errors, non-detections, and selection effects.

Eckert et al. analyze a 1.1Ms Integral ISGRI observation of the Coma cluster to find an extended hard X-ray excess in the direction of the infalling cluster A1376.

Sanders & Fabian continue their analysis of the very deep Chandra observation of the Perseus cluster finding a) the ripples interpreted as sound waves carry a significant fraction of the energy lost to radiative cooling b) the distribution of metals peaks at 40 kpc and is clumpy on scales of 5 kpc c) there is no evidence for thermal emission from the radio bubbles.

Repin et al. give analytic approximations for the relativistic Fe K line shape from accretion disks. A table is available.

Preprints

Stanek proposes a an alternative history version of astro-ph for failed telescope and other proposals. Probably should have come out on Apr 1.

Feroz & Hobson describe an efficient sampling method for multimodel and/or degenerate distributions when calculating Bayesian evidence.

Hallman et al. use numerical simulations to show that using beta-model fits to X-ray data in the analysis of SZE observations leads to systematic biases and suggest a simple correction.

Miller reviews relativistic X-ray lines from the inner regions of accretion disks.

Magliocchetti & Bruggen combine X-ray data from the REFLEX and NORAS samples and radio data from the NVSS to investigate the effects of radio sources on the cluster L_X-T relation.

Kitaura & Ensslin survey Bayesian reconstruction schemes for large-scale structure.

Kerkyacharian et al. present a new estimation method for the inverse problem building on SVD decomposition.

Preprints

Evans et al. describe the on-line database of Swift GRB lightcurves.

Tombesi et al. find a variable redshifted Fe K line with a modulation timescale of 27 ksec using XMM observations of NGC3783.

Bonavita & Desidera note from a literature search that there appears to be no difference between planet detection rates in single and binary star systems.

Migliori et al. analyze XMM observations of the radio lobes of Pictor A and finds that the particle energy is above the equipartition value and that spacial changes in radio flux are due to magnetic field variation.

Zhang et al. discuss how to test standard gravity on cosmological scales by comparing matter overdensity to gravitational lensing.

Kurucz argues that the exoplanets detected so far are "cryptoplanets" formed from matter ejected by protostars.

Bryan et al. (the CMU astrostatisticians) present a new method to determine multidimensional confidence intervals and apply it to the cosmological data.

Porter & Ferland discuss the addition of He I like lines to Cloudy and their use for diagnostics.

Afshordi considers the accuracy of mass estimates from SZ surveys of clusters.

Erickcek et al. note that the X-ray quantum calorimeter (XQC) rocket flight can be used to place strong constraints on interaction cross-sections between baryons and dark matter.

Rudnick et al. point out that the WMAP cold-spot corresponds to a dip in the number counts of NVSS sources. If this is Sachs-Wolfe effect it would require a void of radius 140 Mpc.

Werner et al. analyze XMM and Suzaku observations of Sersic 159-03 and find a central soft excess but no evidence for lines ruling out thermal sources.

Preprints

Russell et al. use MCMC to do a joint analysis of Chandra and ROSAT data on the cool core group NGC 4325.

Holder et al. estimate the SZ background and consider the limits on SZ cluster measurements due to confusion effects.

Zhang et al. look at the X-ray properties and scaling relations for 12 z~0.2 clusters observed by XMM-Newton and note that if the central cores are excluded then normalizations agree to 10% irrespective of cluster morphology.

Chartas et al. analyze Chandra and XMM observations of the gravitationally lensed low ionization broad absorption line quasar H1413+117 and detect emission lines.

Fujita et al. look at MHD Alfven waves as a heating method for cool cores in clusters and note that they would also create longitudinal (sound) waves observable as ripples.

Bogdanovic et al. argue that torques during galaxy mergers will tend to align the spins of their MBHs thus reducing gravitational radiation kicks when the MBHs merge.

Ciotti & Ostriker perform high-res hydro simulations with photoionization and Compton heating to investigate the effects of an AGN on the ISM of an isolated early type galaxy.

Trotta presents a new procedure for estimating the Bayes factor of future observation to help with experiment design.

Scharf considers the effects of parallax on exoplanet timing measurements.

Giommi et al. use Swift to measure the X-ray fluxes of blazars which are CMB foreground sources and show that there is a tight correlation between X-ray and microwave fluxes.

Maughan et al. present a summary of the analysis of ACIS-I observations of 116 clusters from z of 0.1 to 1.3.

The HiRes Collaboration detect the GZK cut-off at 6e19 eV, precisely as predicted.

Preprints

Portegies Swart et al. test using modern Graphics Processing Units to perform N-body calculations and conclude they show some cost and reliability benefits over specialised hardware.

Brownstein & Moffatt argue that the bullet cluster results are consistent with modified gravity and not with dark matter.

Evrard et al. use an ensemble of heirarchical clustering simulations to argue that sigma_8 = 0.8 in contrast to the best-fit number of 0.69 favored by recent WMAP and SDSS analysis.

Lodato & Natarajan derive the seed function of mass BHs at z~15.

Krongold et al. use an XMM observation of NGC4051 to track changes in the ionization state of the warm absorber and deduce that it comes from an accretion disk wind not the dusty torus.

Schafer provides a statistically rigorous method of estimating luminosity function using truncated data.

Rossetti & Molendi fire back in the controversy over the existence of a non-thermal tail in the X-ray spectrum of the Coma cluster.

Medvedev examines evaporation rates of hot gas from clusters as a possible explanation of recent S-Z results and concludes that for the mechanism to work magnetic fields must be non-existent or highly ordered.

Seto & Cooray discuss a technique for placing limits on primordial BH densities by using pulsar timing measurements to look for impulsive accelerations on the Earth.

Linder & Miquel warn against applying model selection procedures in cosmology without adequate thought about physics.

Hickox & Markevitch look at Chandra deep field data excluding all known HST and Spitzer sources to provide a limit on X-ray emission from the WHIM.

Fusco-Femiano et al. continue the data about the Coma hard X-ray emission.

Chen et al. use ROSAT and ASCA observations of HIFLUGCS clusters to investigate the statistical properties of cooling cores.

Zavlin reviews what is known about thermal emission from neutron stars.

Johnstone et al. analyze the Spitzer 10-37 micron spectra from off-nuclear regions in NGC1275 and 4696.

Preprints

Roncarelli et al. calculate the thermal and kinetic SZ signals from a large cosmology simulation and look at correlations with the soft X-ray signal.

Bolton et al. use strong lensing data to replace the surface brightness with mass density in the fundamental plane relation for ellipticals and show that the variance decreases and the tilt is removed implying that early type galaxies are an homologous sequence varying in mass-to-light ratio.

Mathews & Brighenti describe how cosmic rays produced by an AGN generate the cavities and radio sources seen in X-ray emitting clusters.

Edmondson et al. discuss frequentist and Bayesian estimation of photometric redshifts.

Krivinos et al. present results from the Integral/IBIS all-sky survey in the 17-60 keV band.

Ghosh & Raychaudhuri discuss the effect of systematic errors on time series data.

Shaw et al. describe a more efficient scheme for Bayesian inference in cosmology and make available their code.

Kalirai et al. use HST images to measure the proper motion of the globular cluster NGC6397 with respect to the population of background galaxies in the field.

Markevitch & Vihklinin review shocks and cold fronts in the ICM.

Preprints

Koester et al. create a catalog of 13,823 clusters of galaxies in the SDSS. The algorithm used is described in another preprint.

Collister et al. use a neural network to generate a photometric redshift catalog of over one million luminous red galaxies from the SDSS. The training set is a 15,000 galaxy spectroscopic catalog from Cannon et al.

Houck & Allen describe models for non-thermal photon emission.

Sato et al. measure temperature and abundance profiles in A1060 using Suzaku.

Done & Nayakshin argue that the AGN soft excess is more likely to be due to absorption in a wind than reflection from a disk since the latter, unlike the former, requires fine tuning of the ionization state.

Temi et al. find extended far IR emission from ellipticals using Spitzer and interpret it as due to cold gas buoyantly transported from a reservoir in the core.

Corasaniti et al. note that a new generation of big telescopes and very high resolution spectrographs will be able to measure the change in redshift in quasar absorption line systems over a ten-year baseline and hence constrain models for the cosmic expansion history.

Blasi et al. review expected gamma-ray emission from clusters of galaxies.

Kocsis et al. provide a Fourier decomposition method of determining the position of SMBH binary inspiral observed using LISA.

Ng argues that if spacetime undergoes quantum fluctuations then an EM wavefront acquires uncertainties in direction which will show up in interferometric observations of distant quasars.

Poole et al. use a suite of simulations to investigate the effects of mergers on cluster parameter relations.

de Plaa et al. use XMM observations of abundances in 22 clusters to test SN models.

Sesana et al. consider the prospects for using LISA observations to constrain models of the build-up of SMBHs.

Preprints

Bauer et al. use XMM RGS and EPIC observations to investigate the starburst outflow from NGC253. They use cross-dispersion profiles to map the distribution of prominent ions.

Dimopolous et al. propose various laboratory tests of GR using atom interferometry.

Liddle et al. discusses Bayesian evidence for techniques for dark energy.

Petrosian et al. report on RXTE observations of the "bullet cluster".

Clowe et al. present weak lensing results on the cluster 1E0657-558 which shows that the baryon (X-ray emitting) peak is not at the same position as the dark matter peak.

Wheatley & Kallman note the striking similarity between the X-ray spectra of the symbiotic star CH Cyg and Seyfert II - the soft component in both is due to scattering off a photoionized medium.

Dravina reviews quantum optical effects which may be of interest in astronomy.

Ford & Gregory discuss Bayesian model selection in planet searches.

Coble et al. present results on 28.5 GHz radio sources in 90 cluster fields. They find 9 times more sources in cluster cores than in the outskirts which themselves are 3 times overdense in sources relative to the field.

Barnes et al. present the S2PLOT 3-D graphics library.

Churazov et al. use Earth-occulting INTEGRAL observations to measure the CXB from 5-100 keV. They find results consistent to HEAO-1 but with a 10% higher normalization.

Preprints

Gruzinov estimates molecular viscosity in the ICM due to magnetic fields and finds a value large enough to noticeably damp turbulence.

von der Linden et al. construct a sample of 625 brights group and cluster galaxies from the SDSS and compare their properties with other ellipticals.

Best et al. use their sample of BCGs to show that BCGs are preferentially radio-loud and consider the consequences for cooling cores.

Pfrommer et al. calculate the effects of cosmic rays on the X-ray luminosity and S-Z decrement of clusters of galaxies.

Mix et al. present a primer on astrobiology.

Gilli et al. detail their latest CXB synthesis.

Scargle et al. discuss the problem of testing quantum gravity with timing data on GRBs.

Liddle reviews approaches to the problem of selecting between competing models.

Takei et al. claim a detection of the WHIM in the direction of X Comae both in absorption using the XMM RGS and emission using EPIC.

Nevaleinen et al. look at XMM observations of 4 clusters with previous claims of soft excesses and conclude that there are still significant calibration problems at low energies in either the MOS or PN (or perhaps) both which make it impossible to conclude whether or not there is a soft excess.

Kallman & Palmeri review atomic data sources of relevance for astronomy.

Preprints

Afshordi et al. stack 193 X-ray emitting clusters to find a 9 sigma detection of the SZ effect in the WMAP 3-year data. They find that 32+/-10% of the baryons are not in the hot ICM.

Cattaneo & Treyssier perform detailed simulations of AGN feedback on cluster ICM and show that after an initial rapid accretion phase a stable solution is reached with a constant small accretion rate.

Hashimoto et al. analyze a sample of Chandra images of clusters using simple statistics to define morphology. They find that distorted and non-distorted clusters occupy different loci in the L-T plane but no correlation between morphology and luminosity or temperature.

Crowder & Cornish present their solution to the "cocktail party" problem of LISA analysis of Galactic binaries using a Blocked Annealing Metropolis-Hastings MCMC.

Riess et al. present new SNIa, 13 of which are at z>1, and conclude that the data are still consistent with w=-1 and rule out dw/dz>>1.

Borkin et al. use medical imaging technology for slicing 3D data cubes in an astronomical context as part of the Harvard AstroMed initiative.

Fusco-Femiano et al. argue that there really is a non-thermal excess from the Coma cluster.

Jonsson et al. calculate the effects of weak lensing on possible attempts to do cosmology useing GW detections of chirping black holes with EM counterparts (hence redshifts).

Nayakshin explains the variability of continuum and constancy of reflection components in AGN by arguing that disk coronal flares are likely to emit anisotropically.

Preprints

McHardy et al. argue on the basis of X-ray variability and optical emission line widths that AGN are just scaled-up galactic binaries in terms of their black hole accretion process.

Schaefer constructs a Hubble diagram from 69 GRBs and argues that it provides an accuracy only a factor of 2 worse than the big SNIa surveys.

Boyarsky et al. note that improved limits on the sterile neutrino can be obtained using a wide-field but low effective area (ie no telescope) calorimeter.

Ravikumar et al. present new redshifts of objects in the CDFS (alias GOODS-South) and note that this field contains anomalous structures containing evolved, massive galaxies.

Barack & Cutler investigate how well LISA observations of EMRIs can test that spacetime around a rotating BH is the Kerr metric.

Wise et al. report on a deep Chandra observation of Hydra A which shows extensive cavities which correlate precisely with 330 MHz emission.

Belczynski et al. argue that the creation of stellar mass BH binaries are suppressed by mergers during the common envelope phase and so these are not likely to be a significant population for advanced LIGO.

Andersson et al. use their new Smoothed Particle Inference technique to derive temperature maps of three clusters observed using XMM.

Preprints

Gogus et al. point out that supposing Compton scattering dilutes the NS rotation signature in LMXBs also predicts a hard tail from upscattering of NS surface soft photons and this is not seen.

In the first of a series of papers Young & Fryer look at the uncertainties in element yields from SN explosion models.

Lin & Mohr survey radio sources in 573 clusters using data from the NVSS and note that as many as 10% of clusters may have 150 GHz fluxes from AGN comparable to the SZ signal.

Kashlinsky et al. extend their P(D) analysis of Spitzer data to the GOODS dataset and find further evidence for extragalactic fluctuations. In another paper they also discuss the nature of the sources.

Finoguenov et al. report on cluster detections in the first 36 pointings of the XMM-COSMOS survey.

Hayashi et al. simulate the cores of galaxy-sized dark matter haloes and find that the ellipticity increases towards the center. This may explain the observed flattening of velocity profiles in LSB galaxies.

Hopman et al. estimate the expected LISA signal from GW bursts caused by stars in close orbits with the Galactic Center BH.

Jetha et al. study 15 groups with Chandra and find no significant differences in gas profiles between those with radio-loud and radio-quiet BCGs.

Begelman & Pringle consider accretion disks with toroidal magnetic fields and find they are thicker than standard disks for the same radius and accretion rate and have a higher color temperature.