| |
EI2GYB > ASTRO 11.09.21 12:35l 44 Lines 1984 Bytes #999 (0) @ WW
BID : 14367_EI2GYB
Read: GUEST
Subj: Dusty light veers from a black hole's throat
Path: IW8PGT<IZ3LSV<IR1UAW<IW2OHX<UA6ADV<I0OJJ<EA2RCF<LU9DCE<N7HPX<GB7CIP<
EI2GYB
Sent: 210911/1031Z @:EI2GYB.DGL.IRL.EURO #:14367 BPQ6.0.22
_ _ _ _
/ \ ___| |_ _ __ ___ | \ | | _____ _____
/ _ \ / __| __| '__/ _ \ | \| |/ _ \ \ /\ / / __|
/ ___ \\__ \ |_| | | (_) | | |\ | __/\ V V /\__ \
/_/ \_\___/\__|_| \___/ |_| \_|\___| \_/\_/ |___/
Dusty light veers from a black hole's throat
A black hole recently gobbled up material from its companion star in the binary
system V404 Cygni, located 7,800 light-years from Earth. As the black hole's
meal swirled around it in 2015, the matter heated up and the system emitted a
powerful burst of X-ray light. And like the sound waves of a yodeler echoing
through the Austrian Alps, the light waves from the black hole's burst are now
echoing through the cosmos.
This composite image, which is centered on V404 Cygni, spans some 80
light-years and reveals these so-called light echoes. Each concentric ring is
the result of X-rays from the initial burst being scattered by a different
cloud of cosmic dust, redirecting the light toward us. The larger the ring, the
closer the responsible dust cloud is to Earth. X-ray data (blue) for this
composite image were obtained by NASA's Chandra X-ray Observatory and Neils
Gehrels Swift Observatory, while the background star field was imaged by the
Pan-STARRS telescope in Hawaii.
Images at:
https://astronomy.com/news/2021/09/snapshot-dusty-light-veers-from-a-black-holet
s-hroat
____ __ ____ ___ _ _ ____ ____ ____ ____
( __)( )(___ \ / __)( \/ )( _ \ ( _ \( _ \/ ___)
) _) )( / __/( (_ \ ) / ) _ ( ) _ ( ) _ (\___ \
(____)(__)(____) \___/(__/ (____/ (____/(____/(____/
PART OF THE DONEGAL PACKET RADIO NETWORK
Packet: EI2GYB@EI2GYB.DGL.IRL.EURO
Email: EI2GYB@GMAIL.COM
+------------------------------------------------------------------------------+
Read previous mail | Read next mail
| |
