The z = 4.591 quasar PC 1415+3408 exhibits very strong associated metal–line absorption from the N V λλ1238, 1242, Si IV λλ1393, 1402, and C IV λλ1548, 1550 doublets spanning the velocity interval −1700 ≤ v ≤ 0 km s−1. Also present, are detached absorption troughs in N V and C IV spanning −5000 ≤ v ≤ −3000 km s−1; this is characteristic of broad absorption line (BAL) quasars, but the small over...

The recent discovery of a correlation between nuclear black hole mass, M•, and the stellar velocity dispersion, σ∗(Gebhardt et al. 2000a; Ferrarase & Merritt 2000), in elliptical galaxies and spiral bulges, has raised the question whether such a relationship exists for AGN. Estimates of M• for many AGN, made using reverberation mapping techniques, allow exploration of the relationship between b...

Magnetic connections to the plunging region can exert stresses on the inner edge of an accretion disk around a black hole. We recompute the relativistic corrections to the thin-disk dynamics equations when these stresses take the form of a time-steady torque on the inner edge of the disk. The additional dissipation associated with these stresses is concentrated relatively close outside the marg...

We present an initial sample of 19 intermediate-mass black hole candidates in active galactic nuclei culled from the First Data Release of the Sloan Digital Sky Survey. Using the linewidth-luminosity-mass scaling relation established for broad-line active nuclei, we estimate black hole masses in the range of MBH ≈ 8× 104 − 106 M⊙, a regime in which only two objects are currently known. The abso...

Pethia longicauda, a new cyprinid fish, is described from Hiranyakeshi River, Krishna drainage, Maharashtra, India. It can be distinguished from congeners based on a combination of characters including: a long caudal peduncle, incomplete lateral line, absence of barbels, upper lip thick and fleshy, distinct lateral fold on snout, 22-24 scales in lateral series, 5-6 lateral-line pored scales, ni...

We determined the molecular basis of three soybean lines that vary in seed coat color at the R locus which is thought to encode a MYB transcription factor. RM55-r(m) is homozygous for a mutable allele (r(m)) that specifies black and brown striped seeds; RM30-R* is a stable black revertant isoline derived from the mutable line; and RM38-r has brown seed coats due to a recessive r allele shown to...

Reverberation mapping methods have been used to measure masses in about three dozen AGNs. The consistency of the virial masses computed from line widths and time delays, the relationship between black hole mass and host-galaxy stellar bulge velocity dispersion, and the consistency with black hole masses estimated from stellar dynamics in the two cases in which such determinations are possible a...

Dario huli, new species, is described from a small tributary stream of the Tunga River in southern Karnataka, India. It can be distinguished from all its congeners except D. urops by the presence of a conspicuous black caudal-fin blotch and by anterior dorsal-fin lappets in males not being produced beyond fin spines. It is readily distinguished from Dario urops by the absence of the horizontal ...

We study the following linear classification problem in signal processing: Given a set B of n black point and a set W of m white points in the plane (m = O(n)), compute a minimum number of lines L such that in the arrangement of L each face contain points with the same color (i.e., either all black points or all white points). We call this the Minimum Linear Classification (MLC) problem. We pro...