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Fast Radio Bursts---A Brief Review: Some Questions, Fewer Answers
- J. Katz
- Physics
- 6 April 2016
Fast Radio Bursts are millisecond bursts of radio radiation at frequencies of about 1 GHz, recently discovered in pulsar surveys. They have not yet been definitively identified with any other…
INFERENCES FROM THE DISTRIBUTIONS OF FAST RADIO BURST PULSE WIDTHS, DISPERSION MEASURES, AND FLUENCES
- J. Katz
- Physics
- 22 May 2015
The widths, dispersion measures (DMs), dispersion indices, and fluences of Fast Radio Bursts (FRBs) impose coupled constraints that all models must satisfy. The non-monotonic dependence of burst…
A Precessing Disk in OJ 287?
- J. Katz
- Physics
- 1 April 1997
Sillanpää et al. have demonstrated that the active galactic nucleus OJ 287 has intensity peaks that recur within a period of about 12 yr. I suggest that this is the result of the sweeping of a…
Nodding motions of accretion rings and disks - A short-term period in SS 433
- J. Katz, S. Anderson, S. Grandi, B. Margon
- Physics
- 15 September 1982
It is pointed out that accretion disks and rings in mass transfer binaries have been observed spectroscopically and calculated theoretically for many years. The present investigation is partly based…
Thirty-five-day Periodicity in Her X-1
- J. Katz
- Physics
- 10 December 1973
THE binary neutron star X-ray source Her X-l displays a variety of complex phenomena as well as the well understood 1.24-s neutron star rotational period and the 1.7-d orbital period1. Notable and…
TWO POPULATIONS AND MODELS OF GAMMA-RAY BURSTS
- J. Katz
- Physics
- 31 December 1992
ABSTRACT /7: Gamma-ray burst statistics are best explained by a source population at cosmological distances, while spec-troscopy and intensity histories of some individual bursts imply an origin on…
Persistent Counterparts to Gamma-Ray Bursts
The recent discovery of persistent gamma-ray burst (GRB) counterparts at lower frequencies permits several important conclusions to be drawn. The spectrum of GRB 970508 is not consistent with an…
Possible Evidence for Relativistic Shocks in Gamma-Ray Bursts
Relativistic shock models of gamma-ray bursts may be tested by comparing their predicted low-energy asymptotic spectral indices s to observations. Synchrotron radiation theory predicts that the…
The Long and the Short of Gamma-Ray Bursts
We report evidence from the Third BATSE Gamma-Ray Burst Catalog that long (T90 > 10 s) and short (T90 < 10 s) gamma-ray bursts (GRBs) represent distinct source populations. Their spatial…
HOW SOFT GAMMA REPEATERS MIGHT MAKE FAST RADIO BURSTS
- J. Katz
- Physics
- 14 December 2015
There are several phenomenological similarities between soft gamma repeaters (SGRs) and fast radio bursts (FRBs), including duty factors, timescales, and repetition. The sudden release of magnetic…
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