A planetary system around the millisecond pulsar PSR1257+ 12

A Wolszczan, DA Frail - Nature, 1992 - nature.com
… position of the pulsar fixed); b, fit for a 982-day keplerian orbit (leaves a 666-day periodicity
as residual); c, fit for a 66,6-daykeplerian orbit (leaves a 982-day periodicity as residual); d, fit …

The Swift gamma-ray burst mission

…, ED Feigelson, EE Fenimore, DA Frail… - The Astrophysical …, 2004 - iopscience.iop.org
… The BAT has a D-shaped coded mask, made of $54,000 lead tiles (5;5;1 mm) mounted
on a 5 cm thick composite honeycomb panel, which is mounted by composite fiber struts 1 m …

Beaming in gamma-ray bursts: evidence for a standard energy reservoir

DA Frail, SR Kulkarni, R Sari… - The Astrophysical …, 2001 - iopscience.iop.org
… In these cases (D), we have only an upper limit on . The final tj group of GRBs are those for …
thereby allowing determination of the total energy (Frail et al. 2000) independent of relativistic …

The radio afterglow from the γ-ray burst of 8 May 1997

DA Frail, SR Kulkarni, L Nicastro, M Feroci, GB Taylor - Nature, 1997 - nature.com
… , θ d = r c /d. For typical ISS parameters 21 and an observing frequency of 8.46 GHz, θ d
3 … For this reason, we point out that the precision of the value quoted for θ d is unlikely to be …

An X-ray pulsar with a superstrong magnetic field in the soft γ-ray repeater SGR1806− 20

…, CA Meegan, K Hurley, J Kommers, I Smith, D Frail… - Nature, 1998 - nature.com
Soft γ-ray repeaters (SGRs) emit multiple, brief (∼0.1-s), intense outbursts of low-energy γ-rays.
They are extremely rare 1 —three 2 , 3 , 4 are known in our Galaxy and one 5 in the …

[HTML][HTML] Spectral constraints on the redshift of the optical counterpart to the γ-ray burst of 8 May 1997

…, SR Kulkarni, CC Steidel, KL Adelberger, DA Frail… - Nature, 1997 - nature.com
… In addition to the lack of individual lines, the mean observed continuum decrement at this
redshift is 21 , 22 D A ≈ 0.1–0.2, and it increases with redshift. If present, such a continuum …

Illuminating gravitational waves: A concordant picture of photons from a neutron star merger

…, D Dobie, SWK Emery, PA Evans, OD Fox, DA Frail… - Science, 2017 - science.org
Merging neutron stars offer an excellent laboratory for simultaneously studying strong-field
gravity and matter in extreme environments. We establish the physical association of an …

Radio emission from the unusual supernova 1998bw and its association with the γ-ray burst of 25 April 1998

SR Kulkarni, DA Frail, MH Wieringa, RD Ekers… - Nature, 1998 - nature.com
… by a thin screen located at an effective distance of D ≈ 0.5–1 kpc. Scattering is … D evaluated
at the transition frequency of (say) 5 GHz is θ 0 ≈ 4 μas; here and below we have set D

Relativistic ejecta from X-ray flash XRF 060218 and the rate of cosmic explosions

…, E Nakar, E Berger, PB Cameron, DB Fox, D Frail… - Nature, 2006 - nature.com
Over the past decade, long-duration γ-ray bursts (GRBs)—including the subclass of X-ray
flashes (XRFs)—have been revealed 1 , 2 , 3 to be a rare variety of type Ibc supernova. …

The afterglow, redshift and extreme energetics of the γ-ray burst of 23 January 1999

…, IS McClean, HI Teplitz, D Koerner, D Kirkpatrick… - Nature, 1999 - nature.com
Long-lived emission, known as afterglow, has now been detected from about a dozen γ-ray
bursts. Distance determinations place the bursts at cosmological distances, with redshifts, z, …