Hidden Broad Line Seyfert 2 Galaxies in the CfA and 12micron Samples

We report the results of a spectropolarimetric survey of the CfA and 12micron samples of Seyfert 2 galaxies (S2s). Polarized (hidden) broad line regions (HBLRs) are confirmed in a number of galaxies, and several new cases (F02581-1136, MCG -3-58-7, NGC 5995, NGC 6552, NGC 7682) are reported. The 12micron S2 sample shows a significantly higher incidence of HBLR (50%) than its CfA counterpart (30%), suggesting that the latter may be incomplete in hidden AGNs. Compared to the non-HBLR S2s, the HBLR S2s display distinctly higher radio power relative to their far-infrared output and hotter dust temperature as indicated by the f25/f60 color. However, the level of obscuration is indistinguishable between the two types of S2. These results strongly support the existence of two intrinsically different populations of S2: one harboring an energetic, hidden S1 nucleus with BLR, and the other, a ``pure S2'', with weak or absent S1 nucleus and a strong, perhaps dominating starburst component. Thus, the simple purely orientation-based unification model is not applicable to all Seyfert galaxies.Comment: 5 pages with embedded figs, ApJ Letters, in pres

Amino acid sequence of conglutin δ, a sulfur-rich seed protein of Lupinus angustifolius L. Sequence homology with the C-III α-amylase inhibitor from wheat

AbstractComplete amino acid sequences and disulfide cross-link arrangements have been determined for the two subunit polypeptides (Mr 9401 and 4597) ofconglutin δ, a helix-rich seed protein from Lupinus angustifolius cv. Uniwhite. There are two intrachain disulfide bonds and a free sulfhydryl group within the large chain and two interchain disulfide bonds to the small chain. The sequences show regions enriched in glutamineglutamic acid and serine residues which were correlated by a predictive method to the high measured level of α-helix (~ 38%). Homology was found between a cystine-rich region ofconglutin δ and the C-III α-amylase inhibitor from wheat suggesting that these proteins originated from a common ancestral gene

Schwinger Representation for the Symmetric Group: Two explicit constructions for the Carrier Space

We give two explicit construction for the carrier space for the Schwinger representation of the group $S_n$. While the first relies on a class of functions consisting of monomials in antisymmetric variables, the second is based on the Fock space associated with the Greenberg algebra.Comment: Latex, 6 page

Effects of crack tip geometry on dislocation emission and cleavage: A possible path to enhanced ductility

We present a systematic study of the effect of crack blunting on subsequent crack propagation and dislocation emission. We show that the stress intensity factor required to propagate the crack is increased as the crack is blunted by up to thirteen atomic layers, but only by a relatively modest amount for a crack with a sharp 60$^\circ$ corner. The effect of the blunting is far less than would be expected from a smoothly blunted crack; the sharp corners preserve the stress concentration, reducing the effect of the blunting. However, for some material parameters blunting changes the preferred deformation mode from brittle cleavage to dislocation emission. In such materials, the absorption of preexisting dislocations by the crack tip can cause the crack tip to be locally arrested, causing a significant increase in the microscopic toughness of the crack tip. Continuum plasticity models have shown that even a moderate increase in the microscopic toughness can lead to an increase in the macroscopic fracture toughness of the material by several orders of magnitude. We thus propose an atomic-scale mechanism at the crack tip, that ultimately may lead to a high fracture toughness in some materials where a sharp crack would seem to be able to propagate in a brittle manner. Results for blunt cracks loaded in mode II are also presented.Comment: 12 pages, REVTeX using epsfig.sty. 13 PostScript figures. Final version to appear in Phys. Rev. B. Main changes: Discussion slightly shortened, one figure remove

The Electron Scattering Region in Seyfert Nuclei

The electron scattering region (ESR) is one of important ingredients in Seyfert nuclei because it makes possible to observe the hidden broad line region (hereafter HBLR) in some type 2 Seyfert nuclei (hereafter S2s). However, little is known about its physical and geometrical properties. Using the number ratio of S2s with and without HBLR, we investigate statistically where the ESR is in Seyfert nuclei. Our analysis suggests that the ESR is located at radius between $\sim$ 0.01 pc and $\sim$ 0.1 pc from the central engine. We also discuss a possible origin of the ESR briefly.Comment: 5 pages and 1 figure. The Astrophysical Journal (Letters), in pres

Excavations and the afterlife of a professional football stadium, Peel Park, Accrington, Lancashire: towards an archaeology of football

Association football is now a multi-billion dollar global industry whose emergence spans the post-medieval to the modern world. With its professional roots in late 19th-century industrial Lancashire, stadiums built for the professionalization of football first appear in frequency in the North of England. While many historians of sport focus on consumerism and ‘topophilia’ (attachment to place) regarding these local football grounds, archaeological research that has been conducted on the spectator experience suggests status differentiation within them. Our excavations at Peel Park confirm this impression while also showing a significant afterlife to this stadium, particularly through children’s play

The development of policing in Britain in the next five years.

The British police service is currently going through a radical transformation phase. The present Tory-led coalition government has set out an agenda to bring about drastic changes in policing. These proposed changes are unprecedented in the history of policing since 1829. The police service is governed by a tripartite arrangement of checks and balances laid down under the Police Act 1964. By this I mean that there are three key players in relation to police governance in Britain: the Home Secretary, the local police authority and the chief constable. The future of policing in the next five years is set out clearly by the Home Secretary, Theresa May MP, under the Police Reform and Social Responsibility Bill, which is currently being reviewed in the House of Lords. The recent phone hacking scandal has made it imperative for the British public to have a closer look at the police service in relation to proper accountability. There have been references to police corruption as far back as the era of 'parish constables', dating back to 1800, when it was alleged that police officers took bribes, got drunk whilst on duty and lacked moral credibility to protect and serve us (Critchley, 1978). In the seventies and eighties the British public was informed of another scandal involving members of Scotland Yard and criminal gangs in the East End of London. In this article, I shall argue that the issue of police corruption is not a new phenomenon. It is has been an ongoing issue that has haunted the police for over a century. This article is divided into three parts. In the first part of the article I present the following issues: the Metropolitan Police policing plan 2011-2014; the merits and demerits of the policing plan; tripartite police accountability and its shortcomings; democratic accountability and localisation of policing; the professionalisation of policing and the creation of the Police Body; review of police pay and benefits; and the impact of this on police officers' morale. In the second part of my article I present some of the criticisms levelled against the ongoing police reforms. I will look at the criticisms from both internal and external perspectives. By internal criticism, I mean police officers' opposition to the reforms. By external criticism, I mean criticisms from criminologists and members of the British public. In the third part of my article I made my position clear on where I stand in relation to the ongoing police reforms. I shall argue that the current ongoing job cuts in the police service are a disaster waiting to happen, and that our safety has been compromised by politicians. We are now living at the mercy of criminals and law breakers due to manpower shortage. We are all living witnesses to the ongoing public disturbances in Tottenham, Enfield, Brixton, Peckham, Walthamstow and Croydon, in London. The speed of the spread of these riots to other cities like Bristol, Birmingham, Manchester and Liverpool occurred on an unimaginable scale. We all watched how difficult it was for the police to restore order and normality. Rioters looted and plundered goods and burnt down buildings as if no laws existed in our country. A complete breakdown of law and order put the lives of citizens at risk. My article makes a passionate appeal to the present coalition government to rethink the issue of reducing the numbers of police officers protecting us. I shall argue that we need more police officers in Britain not fewer. The level of anger and social discontent is higher than the government ever anticipated, partly because of economic hardship. My argument is that economic hardship is not an excuse to commit burglary, theft, arson, murder and criminal damage with intent to endanger life. Rioters are shameless opportunists, a bunch of hoodlums, criminals who have no place in any civilised society, who should be made to face the due process of law

Self-consistent anisotropic oscillator with cranked angular and vortex velocities

The Kelvin circulation is the kinematical Hermitian observable that measures the true character of nuclear rotation. For the anisotropic oscillator, mean field solutions with fixed angular momentum and Kelvin circulation are derived in analytic form. The cranking Lagrange multipliers corresponding to the two constraints are the angular and vortex velocities. Self-consistent solutions are reported with a constraint to constant volume.Comment: 12 pages, LaTex/RevTex, Phys. Rev. C4

DMTPC: A dark matter detector with directional sensitivity

By correlating nuclear recoil directions with the Earth's direction of motion through the Galaxy, a directional dark matter detector can unambiguously detect Weakly Interacting Massive Particles (WIMPs), even in the presence of backgrounds. Here, we describe the Dark Matter Time-Projection Chamber (DMTPC) detector, a TPC filled with CF4 gas at low pressure (0.1 atm). Using this detector, we have measured the vector direction (head-tail) of nuclear recoils down to energies of 100 keV with an angular resolution of <15 degrees. To study our detector backgrounds, we have operated in a basement laboratory on the MIT campus for several months. We are currently building a new, high-radiopurity detector for deployment underground at the Waste Isolation Pilot Plant facility in New Mexico.Comment: 4 pages, 2 figures, proceedings for the CIPANP 2009 conference, May 26-31, 200

A Radio Study of the Seyfert Galaxy IC 5063: Evidence for Fast Gas Outflow

New radio continuum (8 GHz and 1.4 GHz) and HI 21 cm line observations of the Seyfert 2 galaxy IC 5063 (PKS 2048-572) were obtained with the Australia Telescope Compact Array (ATCA). The 8 GHz image reveals a linear triple structure (~4'', 1.5 kpc) oriented perpendicular to the optical polarization position angle. It is aligned with the inner dust lane and shows strong morphological association with the narrow emission line region (NLR). At 21 cm, very broad (~700 km/s) HI absorption is observed against the strong continuum source. This absorption is almost entirely blueshifted, indicating a fast net outflow, but a faint and narrow redshifted component is also present. In IC 5063 we see clear evidence for strong shocks resulting from the radio plasma-ISM interaction in the central few kpc. However, the energy flux in the radio plasma is an order of magnitude smaller than the energy emitted in emission lines. Thus, shocks are unlikely to account solely for the global ionization of the emission line region, particularly at large distances. The HI emission outlines a warped disk associated with the system of dust lanes some ~2' (~38 kpc) in radius. The lack of kinematically disturbed gas outside the central few kpc, coupled with the disk warp and close morphological connection of the inner dust lanes and the large-scale ionized gas, support the idea that the gas at large radii is photoionized by the central region, while shadowing effects are important in defining its X-shaped morphology. The kinematics of the ionized and of the neutral gas suggests the existence of a dark halo.Comment: 18 pages, 8 Postscript figures, 3 jpeg figures, Postscript preprint is available from http://jhufos.pha.jhu.edu/~zlatan/papers.htm