Repeated Relativistic Ejections in GRS 1915+105
نویسندگان
چکیده
منابع مشابه
MERLIN observations of relativistic ejections from GRS 1915 + 105
We present high resolution MERLIN radio images of multiple relativistic ejections from GRS 1915+105 in 1997 October / November. The observations were made at a time of complex radio behaviour, corresponding to multiple optically-thin outbursts and several days of rapid radio flux oscillations. This activity followed ∼ 20 days of a plateau state of inverted-spectrum radio emission and hard, quas...
متن کاملVariable circular polarisation associated with relativistic ejections from GRS 1915 + 105
We report the discovery of variable circularly polarised radio emission associated with relativistic ejections from GRS 1915+105, based on observations with the Australia Telescope Compact Array (ATCA) and the Multi-Element Radio-Linked Interferometer Network (MERLIN). Following a radio flare in 2001 January, significant and variable circular polarisation, at a fractional level of 0.2–0.4%, was...
متن کاملEvidence for a relativistic iron line in GRS 1915 + 105
We report on the discovery of a relativistic iron Kα fluorescent emission line in the BeppoSAX spectrum of the microquasar GRS 1915+105, taken on April 19, 1998, when the line was unusually intense. The feature is broad and skewed, clearly indicating emission from the innermost regions of the accretion disc. The inner emitting orbit is larger than the innermost stable orbit, even in Schwarzschi...
متن کاملA Magnetic Bomb Scenario for Relativistic Jet Events in the Microquasar GRS 1915 + 105
We present a magnetic bomb scenario for the multiwavelength behavior during " Type B " relativistic jet events in the microquasar GRS 1915+105. These events are characterized by a hard X-ray dip which terminates in a soft X-ray spike. The scenario, based on the suspended accretion model for long gamma-ray bursts, posits a magnetic dynamo around an accreting Kerr black hole which reaches the Van...
متن کاملMultiple relativistic outbursts of GRS 1915 + 105 : radio emission and internal shocks
We present 5-GHz MERLIN radio images of the microquasar GRS 1915+105 during two separate outbursts in 2001 March and 2001 July, following the evolution of the jet components as they move outwards from the core of the system. Proper motions constrain the intrinsic jet speed to be > 0.57c, but the uncertainty in the source distance prevents an accurate determination of the jet speed. No decelerat...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1999
ISSN: 0004-637X,1538-4357
DOI: 10.1086/306642