Neither Substance Nor Process II: Two Modes

2017 ◽  
Author(s):  
Jon Cogburn
Keyword(s):  
The Universe ◽  
Characteristic Manner

Chapter V begins by rehearsing the distinction between substance and process philosophies and how Garcia attempts to avoid problems with both. Of particular relevance is Graham Harman’s claim that Garcia’s characterization of an object in terms of its difference from that which it comprehends and from what comprehends it ends up, actually in the characteristic manner of process philosophies, having the object depend on these very things. Changing any of the comprehended or comprehending things would change the precise difference in question, resulting in a different object. Worse, since the object is comprehended by all of the relations that it has to every other object, Garcia seems to be committed to the view that the object’s identity is a function of everything in the universe, a position which easily veers into the (British) Hegelian affirmation that there is only one thing. Discussing Garcia allows me to pose this problem in a novel way, via what I call the Putnam/Parmenides argument.

Ionized gas kinematics and luminosity profiles of Low-z Lyman Alpha Blobs

2019 ◽  
Vol 15 (S359) ◽  
pp. 413-414
Author(s):  
María P. Agüero ◽  
Rubén Díaz ◽  
Mischa Schirmer
Keyword(s):  
Emission Line ◽  
Galactic Nuclei ◽  
Host Galaxies ◽  
Ionized Gas ◽  
Lyman Alpha ◽  
Gas Kinematics ◽  
The Universe ◽  
Very High ◽  
The Continuum

AbstractThis work is focused on the characterization of the Seyfert-2 galaxies hosting very large, ultra-luminous narrow-line regions (NLRs) at redshifts z = 0.2−0.34. With a space density of 4.4 Gcp−3 at z ∼ 0.3, these “Low Redshift Lyman-α Blob” (LAB) host galaxies are amongst the rarest objects in the universe, and represent an exceptional and short-lived phenomenon in the life cycle of active galactic nuclei (AGNs). We present the study of GMOS spectra for 13 LAB galaxies covering the rest frame spectral range 3700–6700 Å. Predominantly, the [OIII]λ5007 emission line radial distribution is as widespread as that of the continuum one. The emission line profiles exhibit FWHM between 300–700 Km s−1. In 7 of 13 cases a broad kinematical component is detected with FWHM within the range 600–1100 Km s−1. The exceptionally high [OIII]λ5007 luminosity is responsible for very high equivalent width reaching 1500 Å at the nucleus.

scholarly journals NIKA: a mm camera for Sunyaev-Zel’dovich science in clusters of galaxies

2020 ◽  
Vol 228 ◽  
pp. 00016
Author(s):  
J.F. Macías-Pérez ◽  
R. Adam ◽  
P. Ade ◽  
P. André ◽  
A. Andrianasolo ◽  
...  
Keyword(s):  
Dark Matter ◽  
Angular Resolution ◽  
High Redshift ◽  
Radial Pressure ◽  
Pressure Profile ◽  
Field Of View ◽  
Dual Band ◽  
Clusters Of Galaxies ◽  
The Universe

Clusters of galaxies, the largest bound objects in the Universe, constitute a cosmological probe of choice, which is sensitive to both dark matter and dark energy. Within this framework, the Sunyaev-Zel’dovich (SZ) effect has opened a new window for the detection of clusters of galaxies and for the characterization of their physical properties such as mass, pressure and temperature. NIKA, a KID-based dual band camera installed at the IRAM 30-m telescope, was particularly well adapted in terms of frequency, angular resolution, field-of-view and sensitivity, for the mapping of the thermal and kinetic SZ effect in high-redshift clusters. In this paper, we present the NIKA cluster sample and a review of the main results obtained via the measurement of the SZ effect on those clusters: reconstruction of the cluster radial pressure profile, mass, temperature and velocity.

scholarly journals Opening reionization: quantitative morphology of the epoch of reionization and its connection to the cosmic density field

2020 ◽  
Vol 498 (3) ◽  
pp. 4533-4549
Author(s):  
Philipp Busch ◽  
Marius B Eide ◽  
Benedetta Ciardi ◽  
Koki Kakiichi
Keyword(s):  
Morphological Characterization ◽  
Bubble Size Distribution ◽  
Density Field ◽  
Volume Element ◽  
Quantitative Morphology ◽  
Infinite Cluster ◽  
Spatially Resolved ◽  
Binary Fields ◽  
The Universe

ABSTRACT We introduce a versatile and spatially resolved morphological characterization of binary fields, rooted in the opening transform of mathematical morphology. We subsequently apply it to the thresholded ionization field in simulations of cosmic reionization and study the morphology of ionized regions. We find that an ionized volume element typically resides in an ionized region with radius ∼8 h−1 cMpc at the midpoint of reionization (z ≈ 7.5) and follow the bubble size distribution even beyond the overlap phase. We find that percolation of the fully ionized component sets in when 25 per cent of the universe is ionized and that the resulting infinite cluster incorporates all ionized regions above ∼8 h−1 cMpc. We also quantify the clustering of ionized regions of varying radius with respect to matter and on small scales detect the formation of superbubbles in the overlap phase. On large scales, we quantify the bias values of the centres of ionized and neutral regions of different sizes and not only show that the largest ones at the high-point of reionization can reach b ≈ 30, but also that early small ionized regions are positively correlated with matter and large neutral regions and late small ionized regions are heavily antibiased with respect to matter, down to b ≲ −20.

scholarly journals AGN Evolution from Large and Deep X-Ray Surveys

2009 ◽  
Vol 5 (S267) ◽  
pp. 231-238
Author(s):  
Marcella Brusa
Keyword(s):  
Black Holes ◽  
Star Formation ◽  
Observational Cosmology ◽  
Host Galaxies ◽  
Feedback Effects ◽  
X Ray ◽  
The Universe ◽  
Sizable Number

AbstractOver the last few years, the existence of mutual feedback effects between accreting supermassive black holes powering AGN and star formation in their host galaxies has become evident. This means that the formation and the evolution of AGN and galaxies should be considered as one and the same problem. As a consequence, the search for, and the characterization of the evolutionary and physical properties of AGN over a large redshift interval is a key topic of present research in the field of observational cosmology. Significant advances have been obtained in the last ten years thanks to the sizable number of XMM–Newton and Chandra surveys, complemented by multiwavelength follow-up programs. I will present some of the recent results and the ongoing efforts (mostly from the COSMOS and CDFS surveys) aimed at obtaining a complete census of accreting black holes in the universe, and a characterization of the properties of the host galaxies.

A characterization of Martin's axiom in terms of absoluteness

1997 ◽  
Vol 62 (2) ◽  
pp. 366-372 ◽  
Author(s):  
Joan Bagaria
Keyword(s):  
Martin's Axiom ◽  
Martin’S Axiom ◽  
The Universe

AbstractMartin's axiom is equivalent to the statement that the universe is absolute under ccc forcing extensions for Σ1 sentences with a subset of κ, , as a parameter.

Precision CMB Measurements from Long Duration Stratospheric Balloons: Towards B-modes and Inflation

2012 ◽  
Vol 8 (S288) ◽  
pp. 53-60
Author(s):  
William C. Jones
Keyword(s):  
Microwave Background ◽  
Technical Approach ◽  
Millimeter Wavelength ◽  
Leading Role ◽  
Long Duration ◽  
Scientific Potential ◽  
Balloon Experiments ◽  
The Relationship ◽  
The Universe

AbstractObservations of the Cosmic Microwave Background (CMB) have played a leading role in establishing an understanding of the structure and evolution of the Universe on the largest scales. This achievement has been enabled by a series of extremely successful experiments, coupled with the simplicity of the relationship between the cosmological theory and data. Antarctic experiments, including both balloon-borne telescopes and instruments at the South Pole, have played a key role in realizing the scientific potential of the CMB, from the characterization of the temperature anisotropies to the detection and study of the polarized component. Current and planned Antarctic long duration balloon experiments will extend this heritage of discovery to test theories of cosmic genesis through sensitive polarized surveys of the millimeter-wavelength sky. In this paper we will review the pivotal role that Antarctic balloon borne experiments have played in transforming our understanding of the Universe, and describe the scientific goals and technical approach of current and future missions.

Shintō is the Indigenous Religion of the World

2018 ◽  
Vol 7 (1) ◽  
pp. 57-81
Author(s):  
Takashi Miura
Keyword(s):  
Medieval Period ◽  
Indigenous Religion ◽  
The World ◽  
Japanese Religion ◽  
Entire World ◽  
Recent Monograph ◽  
The Universe

Abstract This article responds to a call for more research on the theme of “universality” in Japanese religion as articulated by Michel Mohr in his recent monograph (2014). The article focuses on Deguchi Onisaburō 出口王仁三郎 and examines the ways in which he utilized “Shintō” as a self-universalizing framework. He argued that Shintō is the spiritual foundation of the entire world, a kind of cosmic principle that pervades the universe. Based on this, he claimed that all religions around the world are merely different forms of Shintō. Onisaburō was not the first to advance this type of universalizing argument, as a number of Shintō thinkers had made comparable claims since the medieval period. What was at stake for Onisaburō and his predecessors, in other words, was not Shintō’s “indigeneity” to Japan, but its universality. This observation helps to further relativize and historicize the prevailing characterization of Shintō as Japan’s “indigenous religion.”

scholarly journals Diffuse Ultraviolet Background Radiation

1999 ◽  
Vol 171 ◽  
pp. 357-364
Author(s):  
Richard C. Henry
Keyword(s):  
Dark Matter ◽  
Surface Brightness ◽  
Background Radiation ◽  
Diffuse Radiation ◽  
Upper Limit ◽  
Nasa Mission ◽  
Low Surface Brightness ◽  
Diffuse Background ◽  
The Universe

AbstractDiffuse ultraviolet background radiation may contain important information concerning the dark matter of the universe. I briefly review new Voyager observations of the diffuse background, which give a very low upper limit on the background radiation shortward of Lyman α, and I review the capabilities for detection and characterization of diffuse radiation that will be provided by a proposed new NASA mission. Low-surface-brightness radiation remains largely an unexplored frontier, particularly in the ultraviolet.

scholarly journals Occulter to earth: prospects for studying earth-like planets with the E-ELT and a space-based occulter

2021 ◽  
Author(s):  
Markus Janson ◽  
Thomas Henning ◽  
Sascha P. Quanz ◽  
Ruben Asensio-Torres ◽  
Lars Buchhave ◽  
...  
Keyword(s):  
Direct Detection ◽  
White Paper ◽  
Mass Ratio ◽  
Technical Developments ◽  
Habitable Zones ◽  
High Area ◽  
It Project ◽  
Earth Like Planets ◽  
The Universe

AbstractDirect detection and characterization of Earth-like planets around Sun-like stars is a core task for evaluating the prevalence of habitability and life in the Universe. Here, we discuss a promising option for achieving this goal, which is based on placing an occulter in orbit and having it project its shadow onto the E-ELT at the surface of Earth, thus providing a sufficient contrast for imaging and taking spectra of Earth-like planets in the habitable zones of Sun-like stars. Doing so at a sensible fuel budget will require tailored orbits, an occulter with a high area-to-mass ratio, and appropriate instrumentation at the E-ELT. In this White Paper, submitted in response to the ESA Voyage 2050 Call, we outline the fundamental aspects of the concept, and the most important technical developments that will be required to develop a full mission.

scholarly journals Hinduism and Universality in Religion

2018 ◽  
Vol 1 (1) ◽  
pp. 17-37
Author(s):  
Kusumita Pedersen
Keyword(s):  
Time Variation ◽  
Colonial Period ◽  
Moral Norms ◽  
General Characterization ◽  
Religious Truth ◽  
Religious Plurality ◽  
Truth Claims ◽  
The One ◽  
The Universe

The essay first considers the terms “Hindu” and “Hinduism” with their continuing ambivalence as meaning both the ethnic or national and the “religious.” It then takes up the problem of definition and whether one may speak of a single “Hinduism.” The term “religion” and critiques of it as Western are discussed and an account of religion as worldview, ethics and practice, following Geertz and Smart, is proposed as viable and applicable to Hinduism as well as other traditions. Two senses of “universality” as empirical and normative are explained. Brereton’s general characterization of Hinduism is held up; drawing on Lorenzen, Nicholson and others it is noted that a self-conscious identity of “Hindu dharma” emerged centuries before the colonial period. The essay then turns to Swami Vivekānanda’s constructive exposition of universal dimensions of “Hinduism” in the context of modern religious plurality. He holds that the human aspiration to know God is universal, as are moral norms, and that this can be shown from the evidence but at the same time variation is an inherent pattern of the universe. Many religious truth-claims thus inevitably emerge as differing expressions of the search for the one transcendent Source of existence. These are complementary, not mutually exclusive, and an “absolute” truth is the sum total of all the variations. Moreover religion is evolving, so that revelation is open-ended and many more religions will appear. Vivekananda offers an inclusive pluralism rooted in Vedāntic ontology and the theologically normative view that religion is at its core a quest for union with one sacred ultimate reality variously apprehended.  

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