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Gravity's Relentless Pull: An interactive, multimedia website about black holes for Education and Public Outreach [article]

Roeland P. van der Marel, Gijs Verdoes Kleijn
2006 arXiv   pre-print
The site starts with an opening animation that introduces the basic concept of a black hole.  ...  This journey proceeds through three modules, which allow the user to: find black holes in the night sky; travel to a black hole in an animated starship; and explore a black hole from up close.  ...  A full list of credits is available at holes/credits.html . We would also like to thank Bob Brown for editorial assistance with this article.  ... 
arXiv:astro-ph/0606601v1 fatcat:midas6dbingu3l3q57qf2pyhfy

Primordial Kerr Black Holes [article]

Alexandre Arbey, Jérémy Auffinger, Joseph Silk
2020 arXiv   pre-print
In particular, we will discuss the possibility to distinguish between black holes of primordial and of stellar origins based on the Thorne limit on their spin.  ...  Primordial Black Holes (PBHs) are appealing candidates for dark matter in the universe but are severely constrained by theoretical and observational constraints.  ...  We have discussed the possibility of having nearly extremal spin PBHs and studied constraints from EGRB radiation. We have also considered P9 as a potential PBH in the Solar System.  ... 
arXiv:2012.14767v1 fatcat:66oy7rloqjdtrjn4n4cqsfaqwi

Seeing Black Holes: From the Computer to the Telescope

Jean-Pierre Luminet
2018 Universe  
Astronomical observations are about to deliver the very first telescopic image of the massive black hole lurking at the Galactic Center.  ...  The mass of data collected in one night by the Event Horizon Telescope network, exceeding everything that has ever been done in any scientific field, should provide a recomposed image in 2018.  ...  Conflicts of Interest: The author declares no conflicts of interest. Funding: This research received no external funding. Conflicts of Interest: The author declares no conflicts of interest.  ... 
doi:10.3390/universe4080086 fatcat:ch6r5zaj5nebpfgxccyxowq6za

Examination of the Conversations in a WhatsApp Group Created for Communication in a Bachelor's Level Astronomy Course

Hafife Bozdemir Yuzbasioglu, Sevcan Candan Helvaci, Ebru Ezberci Cevik, Mehmet Altan Kurnaz
2020 International Journal of Education in Mathematics Science and Technology  
In this work, a case study design was adopted.  ...  The sharing in the WhatsApp group and the topics of the messages were revealed in the content analysis.  ...  S moon, nuclear explosions on the Sun, black applications (Saturn, Mars, Scorpius hole, Sculptor Galaxy, black hole, asteroid, Constellation) 3 meteor, gravitational waves (news read, current events),  ... 
doi:10.46328/ijemst.v8i2.674 fatcat:phht2gdr2rbu5dhandzque4adi

Textbooks and Electronic Media

Jay M. Pasachoff
1995 Highlights of Astronomy  
Images include NASA spacecraft movies, supercomputer simulations of black holes, Yohkoh x-ray solar images, and so on. For information, contact Optical Data Corp, 30 Technology Drive, P.O.  ...  Radio astronomy courses are offered only at OSO, which also hosts annual study visits by the country's advanced undergraduates in astronomy.  ... 
doi:10.1017/s1539299600010844 fatcat:kmkpu3tmzfam3cedismigzj7om

Afterglows from the largest explosions in the universe

D. H. Hartmann
1999 Proceedings of the National Academy of Sciences of the United States of America  
The distinction of "largest explosions in the universe" has been bestowed on cosmic gamma-ray bursts. Their afterglows are brighter than supernovae and therefore are called hypernovae.  ...  Photometry and spectroscopy of these afterglows have provided major breakthroughs in our understanding of this mysterious phenomenon.  ...  The study of GRBs is currently in a super-charged phase, with progress occurring rapidly.  ... 
doi:10.1073/pnas.96.9.4752 pmid:10220364 pmcid:PMC33568 fatcat:vhnfkdyj45gz3mu27ol4ahoewi

Galaxy Zoo: Morphological Classification and Citizen Science [article]

Lucy Fortson, Karen Masters, Robert Nichol, Kirk Borne, Edd Edmondson, Chris Lintott, Jordan Raddick, Kevin Schawinski, John Wallin
2011 arXiv   pre-print
We briefly describe the method of applying en-masse human pattern recognition capabilities to complex data in data-intensive research.  ...  internet-based citizen science projects have produced so far.  ...  of black hole feeding in late-type galaxies.  ... 
arXiv:1104.5513v1 fatcat:sjd77jn7k5hh7enw2xvllvmy7m

How the Hubble Telescope cheated death

Alexandra Witze
2015 Nature  
This was the first definitive observation of a supermassive black hole in the core of another galaxy.  ...  In this way you could actually study populations of stars and map out their properties. The public responded to the flood of gorgeous imagery. Hubble became NASA's first Internet sensation.  ... 
doi:10.1038/520282a pmid:25877187 fatcat:2w4uebjarza55mp4kami5c4r7m

Cosmic Tests for a More Explicit Equivalence Principle [article]

Rafael A. Vera (Dep. de Fisica, Fac. de Ciencias Fis. y Mat., Universidad de Concepcion, Concepcion, Chile)
1997 arXiv   pre-print
They fix lineal properties for all of them: the G fields, the black holes (BHs) and the universe. The BHs, after absorbing radiation, must return to the gas state.  ...  Most of the G potential energy of a matter cycle must be released around neutron star and black hole boundaries.  ...  star with GM/r > 1/2, called black hole (BH).  ... 
arXiv:physics/9711007v1 fatcat:pia5325j7vf5hfawbkldjxvt7i

Probabilistic IP prefix authentication (PIPA) for prefix hijacking

Akmal Khan, Ted "Taekyoung" Kwon, Hyunchul Kim
2009 Proceedings of the 4th International Conference on Future Internet Technologies - CFI '09  
That is, PIPA determines the authenticity of the pair (IP prefix, AS path) in BGP messages by using historical stability of the BGP information and internet registry data.  ...  We also discuss how to recover the hijacked IP prefixes in PIPA.  ...  Then, routers may start switching to the more recently announced AS path than the old one. What happens is that all the traffic for the hijacked prefix will be black holed.  ... 
doi:10.1145/1555697.1555725 fatcat:cp3ld4nv75gwpnu7klrkxst7ae

The development of e-MERLIN

Simon Garrington, Rob Beswick
2016 Astronomy & Geophysics  
holes in active galactic nuclei of radio galaxies.  ...  This allows us to peer through the dusty disc of the Milky way to find the compact radio source Sgr A*, the super massive black hole at the centre of our galaxy.  ... 
doi:10.1093/astrogeo/atw101 fatcat:qe2ncqkkofewljpaa7aecw55g4

The TRUMP Astrophysics Project: resources for physics teaching

E. Swinbank
1998 International Astronomical Union Colloquium  
Comets and quasars, black holes and the big bang, pulsars and planets all feature in the media and excite people to find out more - astronomy might be described as the popular face of modern science.  ...  In the UK, recent changes in Advanced Level (A-level) physics courses mean that many students have the option of studying astrophysics to a depth beyond the merely descriptive.  ...  Introduction Comets and quasars, black holes and the big bang, pulsars and planets all feature in the media and excite people to find out more -astronomy might be described as the popular face of modern  ... 
doi:10.1017/s0252921100115337 fatcat:4ysrmr5t2zcedox4gm3qc4ystm

IBTrack: An ICMP black holes tracker

Ludovic Jacquin, Vincent Roca, Mohamed Ali Kaafar, Fabrice Schuler, Jean-Louis Roch
2012 2012 IEEE Global Communications Conference (GLOBECOM)  
ICMP is a fundamental part of the Internet as it handles the control and error messages.  ...  In this paper we present IBTrack, a tool that aims at characterizing how the network actually treats different ICMP messages from an user point of view.  ...  This motivates our study that aims at analyzing issues related to ICMP packet processing by routers, and in particular so-called "ICMP black holes".  ... 
doi:10.1109/glocom.2012.6503545 dblp:conf/globecom/JacquinRKSR12 fatcat:c7jmvwf33zgxriygymtaxgi2ge

Underpinning the universe: its scales, holography and fractality [article]

Antonio Alfonso-Faus, Marius Josep Fullana i Alfonso
2012 arXiv   pre-print
We expand on the general concept of a universe. We identify physics as a unit applied to a universe. Then we generalize the concept of a quantum black hole, and apply it to the unit of a universe.  ...  Here we present three significant quantum black holes, three scales: Planck's, sub- Planck and our own universe as a whole.  ...  unified, and to identify it with a quantum black hole.  ... 
arXiv:1201.4688v1 fatcat:bxnfc6fo35gczkwkw4nc5kvekq

An Internet Database of Ultraviolet Continuum Light Curves for Seyfert Galaxies

Jay P. Dunn, Brian Jackson, Rajesh P. Deo, Chris Farrington, Varendra Das, D. Michael Crenshaw
2006 Publications of the Astronomical Society of the Pacific  
We provide access to the UV light curves and other basic information about the observations in tabular and graphical form via the Internet at  ...  Explorer (IUE) and the Faint Object Spectrograph (FOS) on the Hubble Space Telescope (HST).  ...  AGNs have supermassive black holes consuming nearby gas and stars; the accretion disk surrounding the black hole is presumably the source for their high apparent luminosity and continuum variability.  ... 
doi:10.1086/500961 fatcat:x2wmldvnezetrgrnw52ixir6re
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