Binary and Millisecond Pulsars | SpringerLink
... of many hundreds or even thousands of pulses is usually required in order to produce a detectable “integrated profile”. Remarkably, although the individual pulses vary dramatically, the integrated profile at a given observing frequency is very stable and can be thought of as a fingerprint of the neu ...
... of many hundreds or even thousands of pulses is usually required in order to produce a detectable “integrated profile”. Remarkably, although the individual pulses vary dramatically, the integrated profile at a given observing frequency is very stable and can be thought of as a fingerprint of the neu ...
Impaginazione OK
... A lot of open questions arise when examining Fermi’s life: why was he such a precocious child? Which were the books he studied? Where came his interest in analytical mechanics from? How was he able to get a chair in theoretical physics at the age of 25 in a hostile academic surrounding? Where did h ...
... A lot of open questions arise when examining Fermi’s life: why was he such a precocious child? Which were the books he studied? Where came his interest in analytical mechanics from? How was he able to get a chair in theoretical physics at the age of 25 in a hostile academic surrounding? Where did h ...
Abstract Title of Dissertation: BLACK HOLE DYNAMICS AND GRAVITATIONAL RADIATION IN GALACTIC NUCLEI
... of black holes that will have multiple close encounters, which often lead to mergers. We present simulations of the three-body dynamics of black holes in this environment and estimate that, if many nuclear star clusters do not have supermassive black holes, tens of events per year will be detectable ...
... of black holes that will have multiple close encounters, which often lead to mergers. We present simulations of the three-body dynamics of black holes in this environment and estimate that, if many nuclear star clusters do not have supermassive black holes, tens of events per year will be detectable ...
UCNSD2v12 - Experimental Subatomic Physics
... would still have an accuracy substantially better than in the previous experiments.) With such accuracy, one could address the issues of the discrepancy between the 0+ 0+ decays and the unitarity of the CKM matrix. With possible increases in the UCN source intensity and a better understanding of s ...
... would still have an accuracy substantially better than in the previous experiments.) With such accuracy, one could address the issues of the discrepancy between the 0+ 0+ decays and the unitarity of the CKM matrix. With possible increases in the UCN source intensity and a better understanding of s ...
Gravitational-wave signal from binary neutron star merger
... in order to account for the unknown post-Newtonian coefficients. Numerical simulations involving the solution of Einstein’s equations became viable after the crucial breakthroughs of 2005 [49–51]. Nowadays, simulations of BNS mergers are performed by different groups in the world. The advancements i ...
... in order to account for the unknown post-Newtonian coefficients. Numerical simulations involving the solution of Einstein’s equations became viable after the crucial breakthroughs of 2005 [49–51]. Nowadays, simulations of BNS mergers are performed by different groups in the world. The advancements i ...
2004 Report on Research Activities 2003
... is being continued, with a permanent early-warning and monitoring station at the Institute, an important element of the national radiation monitoring system. After 38 years of operation the U-120 cyclotron was decommissioned and replaced by an inhouse constructed 144 cm pole-piece AIC-144 isochronou ...
... is being continued, with a permanent early-warning and monitoring station at the Institute, an important element of the national radiation monitoring system. After 38 years of operation the U-120 cyclotron was decommissioned and replaced by an inhouse constructed 144 cm pole-piece AIC-144 isochronou ...
![[CII] in the nuclear region of M33: HerM33es](http://s1.studyres.com/store/data/016974860_1-2848b26c9bc0383003a9db0691112ce5-300x300.png)
Modern Physics by Serway, Moses, and Moyer (third
... Style. We have attempted to write this book in a style that is clear and succinct yet somewhat informal, in the hope that readers will find the text appealing and enjoyable to read. All new terms have been carefully defined, and we have tried to avoid jargon. Worked Examples. A large number of worke ...
... Style. We have attempted to write this book in a style that is clear and succinct yet somewhat informal, in the hope that readers will find the text appealing and enjoyable to read. All new terms have been carefully defined, and we have tried to avoid jargon. Worked Examples. A large number of worke ...
Nuclear drip line
In nuclear physics, the boundaries for nuclear particle-stability are called drip lines. Atomic nuclei contain both protons and neutrons—the number of protons defines the identity of that element (ie, carbon always has 6 protons), but the number of neutrons within that element may vary (carbon-12 and its isotope carbon-13, for example). The number of isotopes each element may have is visually represented by plotting boxes, each of which represents a unique nuclear species, on a graph with the number of neutrons increasing on the abscissa (X axis) and number of protons increasing along the ordinate (Y axis). The resulting chart is commonly referred to as the table of nuclides, and is to nuclear physics what the periodic table of the elements is to chemistry.An arbitrary combination of protons and neutrons does not necessarily yield a stable nucleus. One can think of moving up and/or to the right across the nuclear chart by adding one type of nucleon (i.e. a proton or neutron, both called nucleons) to a given nucleus. However, adding nucleons one at a time to a given nucleus will eventually lead to a newly formed nucleus that immediately decays by emitting a proton (or neutron). Colloquially speaking, the nucleon has 'leaked' or 'dripped' out of the nucleus, hence giving rise to the term ""drip line"". Drip lines are defined for protons, neutrons, and alpha particles, and these all play important roles in nuclear physics. The nucleon drip lines are at the extreme of the proton-to-neutron ratio: at p:n ratios at or beyond the driplines, no stable nuclei can exist. The location of the neutron drip line is not well known for most of the nuclear chart, whereas the proton and alpha driplines have been measured for a wide range of elements. The nucleons drip out of such unstable nuclei for the same reason that water drips from a leaking faucet: in the water case, there is a lower potential available that is great enough to overcome surface tension and so produces a droplet; in the case of nuclei, the emission of a particle from a nucleus, against the strong nuclear force, leaves the total potential of the nucleus and the emitted particle in a lower state. Because nucleons are quantized, only integer values are plotted on the table of isotopes; this indicates that the drip line is not linear but instead looks like a step function up close.