Los científicos acaban de dar la voz de alarma hace escasas horas, estamos recibiendo extrañas señales del espacio profundo de naturaleza desconocida, vienen de una galaxia lejana y se han detectado en Canadá. Hace meses que se recibieron las primeras, no se descarta que puedan ser estrellas de neutrones o incluso naves de origen extraterrestre.
Fast radio bursts (FRBs) are highly dispersed millisecond-duration radio flashes probably arriving from far outside the Milky Way1,2. This phenomenon was discovered at radio frequencies near 1.4 GHz and so far has been observed in one case3 at as high as 8 GHz, but not below 700 MHz in spite of significant searches at low frequencies4–7. Here we report detections of 13 FRBs at radio frequencies as low as 400 MHz, on the Canadian Hydrogen Intensity Mapping Experiment (CHIME) using the CHIME/FRB instrument8. They were detected during a telescope pre-commissioning phase, when our sensitivity and field-of-view were not yet at design specifications. Emission in multiple events is seen down to 400 MHz, the lowest radio frequency to which we are sensitive. The FRBs show various temporal scattering behaviours, with the majority significantly scattered, and some apparently unscattered to within measurement uncertainty even at our lowest frequencies. Of the 13 reported here, one event has the lowest dispersion measure yet reported, implying that it is among the closest yet known, and another has shown multiple repeat bursts, as described in a companion paper9. The overall scattering properties of our sample suggest that FRBs as a class are preferentially located in environments that scatter radio waves more strongly than the diffuse interstellar medium in the Milky Way.
Comentarios
Que se vuelvan a sus puertos de origen. Aquí no cabe nadie más.
Lo que faltaba. Ahora llegan los extraterrestres. 800000000 votos más para Vox.
#2 Vendran a hacer el trabajo que los terricolas no queremos hacer.
#5 "1.5 billion light years away"
¿me podrías explicar lo de "urgente"?
#7 Antigua minimo.
#7 que larga es la vida en la perrera.
Cuando contesten les dirán: «hola. Soy de Jazztel»
Otro wow!. Nada que ver. Circulen.
https://es.wikipedia.org/wiki/Se%C3%B1al_Wow!
#0 Menudo microblogging exagerando la noticia... que forma de cargarse una noticia interesante.
#9 #8 pues gracias a él por boicotear su propio envío ya vosotros por cargároslo.
te casco un voto sensacionalista por lo de Urgente y además microblogging, en la noticia real no hay ninguna urgencia
#8 es urgente, acaba de llegar aunque la hayan emitido hace 1.500 millones de años.
Lo único que es "señal" es que se repiten cada 131 segundos.
A mi no me joder, que yo voté a Kodos!!!
Por cierto BBC, ¿qué te pasó? Tú antes molabas.
¡Pero que dices #0! (Por cierto los de BBC como los de Muy interesante aquí ni un puto enlace a las fuentes. #12)
Fuente: Observations of fast radio bursts at frequencies down to 400 megahertz
https://www.nature.com/articles/s41586-018-0867-7
Fast radio bursts (FRBs) are highly dispersed millisecond-duration radio flashes probably arriving from far outside the Milky Way1,2. This phenomenon was discovered at radio frequencies near 1.4 GHz and so far has been observed in one case3 at as high as 8 GHz, but not below 700 MHz in spite of significant searches at low frequencies4–7. Here we report detections of 13 FRBs at radio frequencies as low as 400 MHz, on the Canadian Hydrogen Intensity Mapping Experiment (CHIME) using the CHIME/FRB instrument8. They were detected during a telescope pre-commissioning phase, when our sensitivity and field-of-view were not yet at design specifications. Emission in multiple events is seen down to 400 MHz, the lowest radio frequency to which we are sensitive. The FRBs show various temporal scattering behaviours, with the majority significantly scattered, and some apparently unscattered to within measurement uncertainty even at our lowest frequencies. Of the 13 reported here, one event has the lowest dispersion measure yet reported, implying that it is among the closest yet known, and another has shown multiple repeat bursts, as described in a companion paper9. The overall scattering properties of our sample suggest that FRBs as a class are preferentially located in environments that scatter radio waves more strongly than the diffuse interstellar medium in the Milky Way.
"Urgente" dice, a saber lo que han tardado en llegar.
Ya se han hartado de nosotros y vienen a destruirnos
Ahora deberíamos contestar
-qué? No sé oye bien.