Is SGR 0418+5729 indeed a waning magnetar?

SGR 0418+5729 is a transient soft gamma-ray repeater which underwent a major outburst in 2009 June, during which the emission of short bursts was observed. Its properties appeared quite typical of other sources of the same class until long-term X-ray monitoring failed to detect any period derivative. The present upper limit on P implies that the surface dipole field is Bp lsim 7.5 × 1012 G, well below those measured in other soft gamma-ray repeaters (SGRs) and in the Anomalous X-ray Pulsars (AXPs), a group of similar sources. Both SGRs and AXPs are currently believed to be powered by ultra-magnetized neutron stars (magnetars, Bp ≈ 1014-1015 G). SGR 0418+5729 hardly seems to fit in such a picture. We show that the magneto-rotational properties of SGR 0418+5729 can be reproduced if this is an aged magnetar, ≈1 Myr old, which experienced substantial field decay. The large initial toroidal component of the internal field required to match the observed properties of SGR 0418+5729 ensures that crustal fractures, and hence bursting activity, can still occur at the present time. The thermal spectrum observed during the outburst decay is compatible with the predictions of a resonant Compton scattering model (as in other SGRs/AXPs) if the field is low and the magnetospheric twist is moderate.

Moriscos peninsulares, moros filipinos y el islam en el extremo oriental del imperio español: estudio y edición de la Segunda carta para la S.C.M.R. acerca de los mahometanos de las Philipinas de Melchor de Ávalos (1585)

Exposición y análisis de los argumentos que utilizó Melchor de Ávalos en la "Segunda carta para la S.C.M.R acerca de los mahometanos de las Philipinas", que dirige a Felipe II en 1585. Se concluye que son argumentos del derecho canónico que ya se utilizaron para justificar la conquista de al-Andalus primero y luego la expulsión de los moriscos. Se publica como apéndice este documento.

Letter from Josiah Quincy to Loammi Baldwin, 1836 May 28

One-page handwritten letter of introduction for Sarah King, widow of Edward King of Cincinnati.

A catechism geographicall, historical and chronologicall 1719

Notebook of unlined pages with paper marbled cover holding a handwritten copy of Tutor Flynt's "Catechism" likely copied by Harvard student John Wolcott in 1719. The volume lists questions and accompanying answers on various academic subjects. On the last page, the inscription "John Wolcott [the name is crossed over] his geography, 1719" indicates Wolcott (1702-1747), a member of the Harvard class of 1721, copied the book.

İnşa-yi Hayret Efendi

Also known as: Riyaz ul-kütebâ ve hıyaz ul-üdebâ.

Flashlight Europe N°4–May 2015. Listen carefully to the British

Other than many have predicted the general election in the United Kingdom have not led to a hung parliament but the opposite: An absolute majority for David Cameron and his Tory party. Thus, the way is paved for the EU referendum. Cameron has promised to let his fellow citizens decide whether they would like to stay on in the EU or rather leave. Charles Grant, director of the Centre for European Reform, tells us what this means for the UK and its relation to Germany and the European Union.

La marchande de modes de Marie-Antoinette, Rose Bertin.

Mode of access: Internet.

La dernière dauphine, Madame duchesse d'Angoulême (1778-1851) /

Mode of access: Internet.

Queen Hortense and her friends, 1783-1837 /

Includes index.

Commentaire sur l'Oedipe roi de Sophocle ...

Mode of access: Internet.

De la cryptographie : essai sur les méthodes de déchiffrement /

"Déchiffrement de la correspondance de Henri IV et du landgrave de Hesse": 2. ptie., p. [95]-107.

Alfonso XIII, rey de España, y el mundo impío, ó sea, Cuba a los Yankees : (carambolas por contratabla) : poema /

Mode of access: Internet.

La Sulamita /

Mode of access: Internet.

Monumens de l'histoire de France, en estampes et dessins ...

The present 30 volumes seem to have remained with the Dukes of Leuchtenberg, until the ducal library was acquired for sale in 1935 by the dealers Ulrich Hoepli (Milan) and Braus-Riggenbach (Basel). The volumes are not complete, as leaves have been wholly or partly removed throughout; this is particularly evident in preliminary volumes 2 and 10 and volume 75. Prints and the relatively small number of drawings are mostly French, with some German, Dutch and English, and are mostly of the 17th or 18th centuries. They are mounted generally on rectos of leaves, often with hand-written captions. Large prints are occasionally bound in directly; these are often folded. The engraved general title page (bearing the date 1788) appears at the beginning of each volume; below the printed title a hand-written volume number and brief title describing the volume's contents usually appear. In many volumes the title leaf is followed by a hand-written contents leaf listing the section titles, which are also written individually throughout the volume on leaves with etched decorative frames. Sections are numbered continuously throughout the work as a whole. Numbering of the leaves, when present, appears in black ink within each volume at top center recto. Printmakers include B. & J. Audran, Francesco Bartolozzi, Abraham Bosse, Stefano della Bella, Jacques Callot, François Chéreau, Wenceslaus Hollar, Romeyn de Hooghe, Raymond La Fage, Sébastien Le Clerc, Pierre Lepautre, Claude Mellan, Bernard Picart, and Simon Thomassin. There are also early color prints by Gautier-Dagoty and Jean-Baptiste Morret.