© 2017. The American Astronomical Society. All rights reserved.We present new observations of the low-mass companion to HD 984 taken with the Gemini Planet Imager as a part of the GPI Exoplanet Survey campaign. Images of HD 984 B were obtained in the J and H bands. Combined with archival epochs from 2012 and 2014, we fit the first orbit to the companion to find an 18 au orbit with a 68% confidence interval between 14 and 28 au, an eccentricity (...) of 0.18 with a 68% confidence interval between 0.05 and 0.47, and an inclination of 119°with a 68% confidence interval between 114°and 125°. To address the considerable spectral covariance in both spectra, we present a method of splitting the spectra into low and high frequencies to analyze the spectral structure at different spatial frequencies with the proper spectral noise correlation. Using the split spectra, we compare them to known spectral types using field brown dwarf and low-mass star spectra and find a best-fit match of a field gravity M6.5 ±1.5 spectral type with a corresponding temperature of K. Photometry of the companion yields a luminosity of log=2.88 ± 0.07 dex with DUSTY models. Mass estimates, again from DUSTY models, find an age-dependent mass of 34 ±1 to 95 ±4 M Jup. These results are consistent with previous measurements of the object. (shrink)

“La théorie, c'est bon, mais ça n'empêche pas d'exister”J. M. CharcotRoughly speaking, references relate what is said to just those things about which it is said. A theory of reference is commonly taken to be a statement or characterization of that relation which references effect — that relation, that is, which holds between something that is said and some object just in case in that which is said reference is made to that object. Such a theory is often further conceived (...) as answering one or both of the questions: For any given object X, what is it for a reference to be made to X, and For any given reference, R, what is it for an object X to be the referent of R. Let us call a theory which correctly answers at least some of these questions a classical theory of reference. (shrink)

“La théorie, c'est bon, mais ça n'empêche pas d'exister”J. M. CharcotRoughly speaking, references relate what is said to just those things about which it is said. A theory of reference is commonly taken to be a statement or characterization of that relation which references effect — that relation, that is, which holds between something that is said and some object just in case in that which is said reference is made to that object. Such a theory is often further conceived (...) as answering one or both of the questions: For any given object X, what is it for a reference to be made to X, and For any given reference, R, what is it for an object X to be the referent of R. Let us call a theory which correctly answers at least some of these questions a classical theory of reference. (shrink)

1. HUME’S ARGUMENT, FLEW CORRECTLY EXPLAINS, IS NOT THAT MIRACLES CANNOT HAPPEN, BUT THAT THERE MUST BE A CONFLICT IN THE EVIDENCE TO SHOW THAT THEY DO. 2. (I) FLEW FURTHER APPEALS TO THE INHERENT WEAKNESS OF HISTORICAL AS OPPOSED TO SCIENTIFIC EVIDENCE. BUT ONE’S ASSESSMENT OF THE EVIDENCE MUST DEPEND ON WHETHER THE CONCEPT IS POSSIBLE. (II) FLEW CLAIMS THAT HUME CAN BE TAKEN TO MEAN THAT WHAT IS ALLOWED TO BE A LOGICAL POSSIBILITY SHOULD YET BE DISMISSED AS (...) IMPOSSIBLE IN FACT. BUT THIS DISTINCTION CANNOT BE APPLIED IN ADVANCE OF AN OCCURRENCE, WITHOUT BEGGING THE QUESTION AS TO WHETHER IT IS INDEED POSSIBLE OR NOT. 3. PACE HUME AND FLEW, ENTERTAINING THE CONCEPT IS NOT INCOHERENT. FOR (I) THE RELEVANT "LAW OF NATURE" CAN BE THOUGHT OF AS POTENTIALLY APPLICABLE, THOUGH NOT IN FACT SO; (II) ONE MAY CONCEIVE OF AN "UNCAUSED" EVENT, ONCE ONE SUPPOSES THAT IN MOST OTHER CASES THE UNIVERSE IS UNIFORM. THUS IT COULD BE RATIONAL TO JUDGE THAT A MIRACLE HAD OCCURRED, SINCE THIS WOULD NOT CAL. (shrink)

‘Mysticism means to isolate the eternal from the originated.’ This is not my definition of the word ‘mysticism’ but that of the founder of the ‘orthodox’ school of Muslim mysticism, Al-Junayd of Baghdad who flourished in the ninth century a.d . In actual fact it is not a definition of mysticism at all but of the Arabic word tawḥīd which means primarily ‘the affirmation of unity’; and that surely is an essential ingredient of any form of mysticism: it is the (...) affirmation through personal experience of unity either absolutely or in some qualified sense. (shrink)

As everyone knows, since the end of the Second World War there has been a sensational revival of interest in the non-Christian religions particularly in the United States and in this country. The revival has taken two forms, the one popular, the other academic. The first of these has turned almost exclusively to Hindu and Buddhist mysticism and can be seen as an energetic reaction against the dogmatic and until very recently rigid structure of institutionalised Christianity and a search for (...) a lived experience of the freedom of the spirit which is held to be the true content of mysticism, obscured in Christianity by the basic dogma of a transcendent God, the ‘wholly Other’ of Rudolf Otto and his numerous followers, but wholly untrammelled by any such concept in the higher reaches of Vedanta and Buddhism, particularly in its Zen manifestation. On the academic side the picture is less clear. There is, of course, the claim that the study of religion, like any other academic study, must be subjected to and controlled by the same principles of ‘scientific’ objectivity to which the other ‘arts’ subjects have been subjected, to their own undoing. But even here there would seem to be a bias in favour of the religions of India and the Far East as against Islam, largely, one supposes, in response to popular demand. (shrink)

Hawthorne and Magidor's criticisms of the model of presupposition and assertion that I have used and defended are all based on a rejection of some transparency or introspection of assumptions about speaker presupposition. This response to those criticisms aims first to clarify, and then to defend, the required transparency assumptions. It is argued, first, that if the assumptions are properly understood, some prima facie problems for them do not apply, second, that rejecting the assumptions has intuitively implausible consequences, and third, (...) that the 'margin of error' argument against the principle of positive introspection has a false premiss. The paper concludes with a response to a criticism of what Hawthorne and Magidor call 'the uniformity principle' that is used in the model to explain some pragmatic phenomena. (shrink)